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Registered apprenticeship sponsors in Connecticut

1,916 employers, unions and other organizations sponsor registered apprenticeships in Connecticut, according to apprenticeship.gov's partner file dated October 7, 2026; the oldest registration on file is from 1973.

Sponsors
1,916
registered, apprenticeship.gov
New in 12 months
153
by registration date
Counties
8
with at least one sponsor
Educators
23
schools partnered with programs

How registered apprenticeship works

Registered apprenticeships are paid jobs whose wages rise as you learn (29 CFR 29.5): the program sets a progressively increasing wage schedule. A sponsor is the employer, union or group that runs the program and hires the apprentice. The public sponsor file does not say which occupations a sponsor trains, so ask the sponsor, use apprenticeship.gov's Apprenticeship Finder, or visit your American Job Center.

Pay in Connecticut for apprenticeable occupations

Among the occupations on the approved list that this site also covers as training programs, information security analysts pay the most in Connecticut: a median $130,570 a year (BLS, May 2025), against $34,720 for manicurists and pedicurists.

Occupation (O*NET-SOC)Median pay in ConnecticutJobs in ConnecticutApproved term, from
Information Security Analysts$130,5701,1702,000 hours
Electrical Power-Line Installers and Repairers$126,8509402,000 hours
Cardiovascular Technologists and Technicians$94,9406202,000 hours
Computer Network Support Specialists$81,8908502,000 hours
Surgical Technologists$79,8901,2202,000 hours
Electricians$77,5407,7104,800 hours
Paramedics$77,4801,0004,000 hours
Plumbers, Pipefitters, and Steamfitters$77,2805,4105,920 hours
Heating, Air Conditioning, and Refrigeration Mechanics and Installers$76,6103,8004,000 hours
Licensed Practical and Licensed Vocational Nurses$73,6908,5402,000 hours
Computer User Support Specialists$70,2109,3002,000 hours
Bus and Truck Mechanics and Diesel Engine Specialists$67,3002,8602,000 hours
Welders, Cutters, Solderers, and Brazers$64,8801,7904,000 hours
Chefs and Head Cooks$64,3103,0802,000 hours
Carpenters$64,0605,1602,000 hours
Massage Therapists$62,2607002,000 hours
Medical Records Specialists$60,9401,1202,000 hours
Heavy and Tractor-Trailer Truck Drivers$60,49015,7402,000 hours
Automotive Service Technicians and Mechanics$60,2206,9602,000 hours
Dental Assistants$56,8503,8402,000 hours
Emergency Medical Technicians$50,6402,1902,000 hours
Medical Equipment Preparers$47,9801,0602,000 hours
Medical Assistants$47,43010,2504,000 hours
Pharmacy Technicians$47,0505,2002,000 hours
Phlebotomists$45,8201,6302,000 hours
Nursing Assistants$44,79021,3802,000 hours
Hairdressers, Hairstylists, and Cosmetologists$44,6204,0902,000 hours
Skincare Specialists$43,6806602,000 hours
Barbers$41,4003302,000 hours
Cooks, Restaurant$39,48014,8302,000 hours
Manicurists and Pedicurists$34,7204,4902,000 hours

Sponsors by county

Hartford County has the most sponsors (5 of 1,916); 1,901 rows give no county. 4 sponsors are counted but not named because the name reads as a person's.

Hartford County · 5 sponsors
SponsorCityRegistered
Barnes AerospaceWindsor2018-08-22
Boilermaker Northeastern Area Apprenticeship CommitteeE. Hartford1973-01-23
C-TEC Solar, LLCBloomfield2025-05-01
DePco Mechanical LLCPlainville2021-08-04
The HartfordHartford2016-11-15
Fairfield County · 3 sponsors
SponsorCityRegistered
Campbell Soup Company and Pepperidge Farm, Inc.Norwalk2015-12-03
Inline PlasticsShelton2026-01-11
Save the Children Federation, INC.Fairfield2026-09-24
New London County · 2 sponsors
SponsorCityRegistered
Greython Construction LLCMystic2026-09-01
McGovern Electric LLCNorth Stonington2026-09-13
Aroostook County · 1 sponsor
SponsorCityRegistered
Acme Monaco CorporationNew Britain2026-07-06
Middlesex County · 1 sponsor
SponsorCityRegistered
Finishing Trades of Southern New EnglandMiddletown2009-10-06
Tolland County · 1 sponsor
SponsorCityRegistered
Deer Valley O and MSomers2023-08-03
Windham County · 1 sponsor
SponsorCityRegistered
Wesco OilPutnam1997-12-15
Wood County · 1 sponsor
SponsorCityRegistered
Nestle Waters NA - Hawkins PlantStamford2020-02-23
County not given · 1,901 sponsors
SponsorCityRegistered
3C Electric Systems, LLCHartford2017-10-29
568Systems, Inc.Berlin2006-02-01
A & B Contracting, LLCSeymour2019-04-25
A & B Cooling & Heating Corp.South Windsor2006-02-01
A & B Mechanical, LLCMonroe2006-02-01
A & N Plumbing & Heating, LLCNew Canaan2016-04-12
A & R Electric, Inc.Bridgeport2006-02-01
A & S Electrical Services, Inc.Durham2006-02-01
A & S Nathan Heating & Cooling, LLCAnsonia2008-10-05
A + Plumbing & Heating, LLCWest Haven, CT2007-07-26
A and S Home Services, LLCHartford2024-02-15
A New Beginning Salon SpaBethel2025-07-23
A Touch of Air Property Services, LLCBolton2025-03-30
A+ Electrical Contractors, LLCWatertown2019-09-22
A-1 Glass Company, INC.South Windsor2007-06-03
A-1 Machining Co LLCNew Britain2025-07-30
A-1 Security SystemsSouthbury2025-08-05
A-1 Services, Inc.Meriden2006-02-01
A-Team Plumbing and Drain, LLCNorthford2020-12-02
A. Reynolds Electric, LLCDanielson2022-03-08
A. Secondino & Son, INC.Branford2006-02-01
A.C. Electric LLCBethany2006-02-01
A.C. Electrical Services LLCRidgefield2007-08-29
A.C. Mechanical Services, LLCEast Windsor2024-10-20
A.c.r. Electric LLCEllington2006-02-01
A.E. Electric, LLCWallingford2006-02-01
A.E. Olsen Company, Inc.Southbury2006-02-01
A.I. Boerenko Plumbing & Pump, LLCColchester2016-04-24
A.L. Fire Protection, LLCEast Hartford2006-02-01
A.M.E. Plumbing & Heating, LLCEast Granby2006-02-01
A.N. Giacco, LLCMeriden2006-02-01
A.W. Toppin Electrical ServiceShelton2014-07-28
A/c Electric Services, LLCMilford2024-09-26
A/z CorporationNorth Stonington2006-02-01
A1 Quality RooterMeriden2024-03-04
AA Affordable Air LLCPreston2013-02-05
AA Electrical Service, Inc.West Hartford2006-02-01
Aa Glass, INC.Bloomfield2007-01-24
AAA Electrical ServicesWest Haven2007-03-18
AAA Refrigeration Service Inc.Plainville2006-02-01
AB Electric, LLCWindsor2010-09-02
Able an ABM CompanyStamford2023-02-21
Able Mechanical Services, LLCSouthbury2025-09-23
Absolute Air Services, LLCPortland2006-02-01
Absolute Electrical Contractor, LLCGuilford2012-07-24
Absolute Fire Sprinklers, LLCTorrington2013-08-12
Absolute Home Comfort,LLCMilford2026-08-03
Absolute Plumbing & Heating LLCTrumbull2007-02-06
AC 2000, Inc.Southbury2006-02-01
AC/DC Industrial Electric LLCBozrah2013-10-21
Accelerated Electrical Services, LLCKensington2016-01-07
Accra-Temp, Inc.West Hartford2006-02-01
Accu-Grind Cutter Service Inc.Terryville2006-02-01
Accu-Temp Mechanical Services, Inc.Wolcott2014-03-02
Accurate Electric LLCNorwich2020-10-01
Accurate Electrical Contractors, LLCNaugatuck2006-02-01
Accuray Mechanical, LLCNorth Haven2023-08-28
Ace Electric LLCWatertown2006-02-01
Ace Energy, LLC D/B/A Taylor EnergyBroadBrook2007-08-13
Ace Mechanical services plumbing and heating llcWaterbury2026-08-25
Ace Plumbing & Contracting Services, LLCHamden2019-11-24
ACG Construction, LLCFarmington2024-07-15
Ackert Electric, LLC.Coventry2006-02-01
ACL Electric Services, LLCWilton2019-08-21
Acme Monaco Corp.New Britain2006-02-01
Acorn Electrical Contractors, LLCDanbury2006-02-01
Acorn-Bernier Electric LLCClinton2006-02-01
Acp Heating & Cooling, LLCStamford2007-08-09
Action Air Systems IncManchester2006-02-01
Action Glass Company, Inc.New Milford2007-10-01
Action Glass LLCEast Windsor2024-12-02
Adams & Son HVACNorth Stonington2006-07-27
Addison Electrical Contractors, LLCTorrington2006-02-01
Adept Electric, LLCWest Haven2026-02-09
ADJ of Stamford, Inc.Stamford2006-02-01
Adolf Krueger Company Inc.Bethel2006-02-01
Adonis electric llcNew Milford2025-07-08
Adt & Ibew 90 JatcWallingford2006-02-01
Advance HVACBranford2023-01-22
Advance Plumbing & Heating, Inc.Newington2006-07-16
Advanced Alarms Security SystemsNorth Haven2010-09-01
Advanced Electrical Contractors, Inc.Cromwell2015-02-08
Advanced Electrical InstallationShelton2006-02-01
Advanced Electrical Systems, LLCBroadbrook2006-10-15
Advanced Electronic Systems, LLCNorwalk2006-02-01
Advanced Energy SystemsRocky Hill2025-06-05
Advanced Mechanical Services, LLCFarmington2006-02-01
Advanced Multi-Cabling Plus, LLCWaterbury2023-12-03
Advanced Performance Glass INCEast Hartford2006-02-01
Advanced Security Technologies, INC.Shelton2006-02-01
Advanced Sheetmetal Associates, LLCMiddlefield2014-03-06
Advanced Video Security, LLCWaterbury2018-12-27
Advantage Electrical Services, Inc.Danbury2006-04-30
Aegis Electrical Systems, LLCBranford2006-02-01
Aerial Lighting & Electric, Inc.Shelton2006-02-01
AFB Plumbing & Heating, LLCStratford2006-02-01
Air Connections, LLCPlainville2008-04-13
Air Control Mechanical LLCEllington2025-07-02
Air Flo MechanicalColchester2018-02-05
Air Inc. Heating & Air ConditioningBranford2010-03-22
Air On Time, LLCOld Saybrook2025-02-10
Air One Systems, LLCSherman2020-04-12
Air Solutions INCStamford2006-02-01
Air Specialties Heating & AC IncorporatedWest Haven2006-02-01
Air Spin Mechanical LLCGlastonbury2026-05-17
Air Temp Mechanical Services INCBerlin2006-02-01
Aire Serv Heating and Air ConditioningAnsonia2015-01-14
Airex Rubber Products Corp.Portland2024-03-24
Airplus Heating & Cooling, LLCShelton2023-02-21
Ajr Plumbing ServiceMilford2024-12-16
AJs Plumbing Services, LLCWindham2025-06-05
Al's Plumbing and Heating, LLCOrange2017-12-03
Alarm King Inc.Danbury2006-02-01
Alert Scientific Inc.East Hartford2015-12-10
Aletto Electric, LLCDanbury2019-04-28
Alicki Enterprise Heat and CoolOrange2024-05-12
Alinabal, INC.Milford2006-02-01
All About Kids of Norwalk LLCNorwalk2025-06-02
All American Heating & Air Conditioning Inc.Wolcott2006-02-01
All American Plumbing Services, LLCWallingford2006-02-01
All Around Mechanical Services, Inc.New Milford2026-02-01
All Currents Electric, LLCGuilford2018-12-30
All Plumbing & Heating, LLCAndover2022-09-22
All Pro HVAC, LLCBeacon Falls2017-03-06
All Seasons Mechanical Services, Inc.Manchester2006-02-01
All State Construction, Inc.Farmington2006-02-01
All State Plumbing Pro's, LLCDanbury2018-11-27
All-Brite Electric, Inc.West Haven2006-02-01
All-Tech Plumbing & Heating, LLCBrooklyn2022-09-11
Allen Thomas Electric, LLCCanton2006-02-01
AllgasHartford2025-06-05
Alliance Heating & Air ConditioningBridgeport2006-02-01
Allied Mechanical Services/HB RefrigerationWallingford2006-02-01
Allied Printing ServicesManchester2006-02-01
Allstars Electrical, LLCVernon2014-05-04
Allstate Fire Equipment of Southern CT LLCWallingford2025-08-04
Always There, LLCPreston2019-11-13
Amano McGann Inc.Cheshire2008-11-03
AmentumGroton2016-02-02
American Fire Protection LLCBristol, CT2026-01-04
American Heating & Cooling LLCVoluntown2006-02-01
American Industrial Services, Inc.Wallingford2006-02-01
American Leak Detection, Inc.Bridgeport2023-01-22
American RooterWatertown2021-07-27
American Seal and Engineering Co., INC.Orange2024-09-15
Ametek Haydon Kerk PittmanWaterbury2017-08-08
Ametric Roofing & SolarBridgeport2023-07-30
AMG Plumbing Mechanical LLCNew Haven2025-05-04
Amodio and Sons, Inc.West Haven2018-01-15
AMP Electric LLCNew Milford2006-02-01
Amped Up ElectricEast Hartford2022-01-17
AMZ Electric, LLCShelton2022-09-22
Andersen Oil CompanyLedyard2006-02-01
Anderson Irrigation, LLCUnionville2017-09-06
Anderson Turf Irrigation, Inc.Avon2006-02-01
Andrews Oil & Gas ServicesSouth Windsor2006-02-01
ANE Electrical & Technology Solutions, LLCNew Canaan2020-08-27
ANGELS' Inc.Westport2025-11-12
Annex Mechanical Contractors, Inc.North Branford2021-09-09
Anomatic CorporationNaugatuck2013-03-11
Anthony Badaracco Plumbing & Heating, LLCNorwalk2006-02-01
Anything PlumbingGriswold2008-07-28
Apex Industrial ElectricPlainville2023-12-04
Apex Mechanical, LLCStamford2017-10-09
Apex Refrigeration, Cooling & Heating, LLCBolton2025-02-17
Apple Oil CompanyWest Haven2006-02-01
Apuzzo Electric LLCGuilford2006-02-01
Aqua Pump Co., Inc.Stafford Springs2006-02-01
Aqua-lawn, INC.Fairfield2006-02-01
Aquila Heating & Cooling, LLCFairfield2019-10-23
Aramark FacilitiesWest Hartford2023-03-14
Arbiter Electric LLCEast Hampton2025-06-01
Arc Electric, LLCShelton2024-06-12
ARC Mechanical, LLCWolcott2025-04-08
Architectural Glass & Storefront, INC.Berlin2006-02-01
Arnold Brothers Electric Inc.New Fairfield2025-08-26
Around The Clock Heating & Cooling Inc.North Haven2010-03-03
Arrive Electrical Contractor LLCDanbury2025-04-13
Artek Electrical Services LLCSouth Glastonbury2006-03-27
Asbestos Workers JATC Local #33Wallingford2006-02-01
Associated Security Corp.East Hartford2006-02-01
Associated Security Systems, LLCWolcott2007-05-28
Astacio Plumbing, HVAC, ElectricalNorwalk 068552008-01-27
Astro Electric, Inc.Waterbury2006-02-01
Atlantic Mechanical Services, LLCSouth Windsor2009-03-08
Atlas Stamping & Manufacturing CorporationNewington2016-12-20
Atp Electric, LLCHamden2016-01-06
Audette Electrical Services, Inc.Sherman2006-11-27
Augustine Builders, LLCPlantsville2016-12-05
Augustine Electric, Inc.Fairfield2006-02-01
Auto Home Commercial Electronic SystemsEaston2019-02-13
Automated Building Systems, Inc.Glastonbury2006-02-01
Automatic Plumbing & Heating, Inc.Shelton2006-11-16
Avallone Heating & Cooling, LLCNorth Branford2024-07-08
Avi-splManchester2013-06-13
Avila Electrical Services, LLCWestport2017-02-02
AvnaNew Britain2006-02-01
Avon Plumbing & Heating Co., Inc.Avon2006-02-01
AYS & I, Inc.South Glastonbury2007-05-06
B & D Controlled Air Corp.New Milford2006-02-01
B & J Construction CompanyNew Britain2025-02-23
B & L Heating & Cooling, LLCThomaston2021-01-21
B & M Electrical and Security, LLCHigganum2024-07-15
B & S Sheetmetal Co., Inc.Cheshire2006-02-01
B & W Paving & Landscaping, LLCOakdale2012-04-23
B T Plumbing LLCPlainville2025-01-08
B&M Heating and Cooling, LLCDerby2025-09-09
B. Jags Electric, LLCMystic2016-07-14
B. Kane Electric Co. Inc.Waterbury2006-02-01
B.L. Gleason & Son Inc.Kent2006-02-01
Back East Mechanical LLCKillingworth2025-05-26
Badger Plumbing, LLCEast Hampton2024-06-30
Badger's Plumbing & Heating, LLCMilford2021-05-13
Bafumi Electric, LLCEast Haddam2006-02-01
Bahler Electric LLCEllington2026-02-05
Baldis & Frank, INC.East Granby2021-07-28
Banner Water LLCTolland2010-09-02
Banton Construction Company INCNorth Haven2006-02-01
Barber Electric Inc.Bozrah2006-02-01
Baribault Oil Company, Inc.Oakville2006-07-16
Barnhart Crane & Rigging Co.Middletown2009-07-12
Barry Cone's Heating & Air Conditioning, Inc.Torrington2006-02-01
Bartholomew Electric LLCEnfield2006-02-01
Bassetti Electric, LLCUncasville2024-10-31
Basteino Electric, LLCHartford2021-10-21
Beacher E. McNeal, Inc.Andover2006-02-01
Beacon Electric, Inc.Milldale2006-02-01
Beaver Electric LLCUncasville2006-02-01
Becker’s HVAC & Electrical Service'sWest Hartford2025-12-18
Becton, Dickinson & Co.Canaan2006-02-01
Beebe Landscape Services, INC.East Windsor2026-03-26
Belimo US, INC.Danbury2015-09-27
Bell Electrical Contractors, LLCTorrington2006-02-01
Bella Mia salonBristol2026-06-09
Bellagamba Electric, Inc.Ridgefield2006-02-01
Bellegarde Electric LLCOrange2025-07-28
Bellmay Plumbing & Heating INC.Morris2006-09-12
Beltran Electric LLCJewett City2026-08-23
Bender's Oil Service, Inc.Lebanon2006-02-01
Benedetto Heating & Air Conditioning, LLCOld Lyme2011-01-20
Benjamin Franklin PlumbingAndover2006-02-01
Benvenuti Oil Company, Inc.Waterford2007-09-25
Berkshire Electronic ProtectionTorrington2010-12-01
Berkshire Refrigeration Service Inc.Bethel2006-10-15
Bertozzi Electric, LLCBethel2006-02-01
Bespoke ElectricWilton2021-12-14
Best Way Electric LLCColumbia2015-08-09
Bethany Electric, LLCBethany2018-11-27
BFZ Electric, LLCUnionville2006-02-01
Biagiarelli Electric, LLCNiantic2024-04-14
Bigelow Electric, Inc.Kensington2006-02-01
Bigelow Plumbing, LLCLebanon2024-12-02
Bill Aitken Heating, LLCNorth Stonington2020-12-02
Bill Hegenauer, LLCSandy Hook2022-10-31
Billy Carlson Heating & Air Conditioning, LLCSouthington2006-02-01
Billy Z's ElectricPortland2006-02-01
Birdon America Inc.Portland2025-06-11
Birthmark Fire Protection, LLCEast Hartford2017-10-09
Blais Electric, LLCWoodbury2023-07-30
Blake Thermal Sales & Service Inc.East Windsor2010-03-15
Blass Electric, LLCTorrignton2024-07-15
Blizzard Mechanical, LLCDerby2019-11-07
Bloomfield Electric CompanyGlastonbury2006-02-01
Bloszko Plumbing & HeatingMilford2007-06-10
Blue Flame Oil Company, Inc.New Haven2006-12-19
Blue Marlin Mechanical LLCGoshen2026-03-08
BML Tool & Manufacturing Corp.Monroe2006-07-27
Boho Beauty Bar LLCPutnam2026-01-14
Boisvert PlumbingBloomfield2006-09-28
Bonito Mechanical, LLCNorth Branford2023-04-04
Bonner Electric, INC.Uncasville2006-02-01
Bosse Heating & Air Conditioning LLCPlantsville2007-05-13
Botticelli Plumbing & HeatingDanbury2006-02-01
Boulier Plumbing & HeatingWatertown2006-02-01
Boyington Plumbing solutionsManchester2026-06-07
Brass City/j/ Thurston Fuel, LLCWaterbury2025-03-30
Brattan National, LLCEnfield2018-01-24
Braxton Manufacturing Co., INC.Watertown2006-02-01
Bray's Electric & Construction Inc.Brookfield2006-02-01
Brian Karwosky's Heating & Air Conditioning,Stamford2015-12-03
Brian's Heating & Cooling, LLCSeymour2023-05-30
Bricklayers & Allied Craftworkers LU1 CT JATCWallingford2006-02-01
Bridgeworks Heating & Cooling, LLCPlainville2017-07-17
Bright Electric, LLCStamford2024-11-20
BrightHouse Electric LLCSouthington2026-02-01
Brite-Rite Electrical Services, LLCBranford2018-03-19
Brite-Way Electric LLCColchester2006-02-01
Broad Brook Heating & Cooling, Inc.Jewett City2006-02-01
Broadway Electric, Inc.Southbury2006-02-01
Brook View Developers, LLCBurlington2022-08-30
Brookfield Plumbing & Heating, LLCBrookfield2006-02-01
Brookman Plumbing, LLCWest Suffield2006-08-13
Brooks Oil Service, Inc.Bristol2009-08-25
Brookside ElectricDarien2008-12-21
Brothers Oil Company & Heating ServiceEast Hartford2008-01-01
Brown & Son Plumbing & Heating, LLCGales Ferry2006-02-01
Bryant Glass & Shower Doors, LLCBantam2021-06-17
Btl Barbershop LLCWest Haven2026-08-25
Buchta Oil ServiceGuilford2024-09-09
Buck Electric, LLCNaugatuck2019-11-07
Buddy's Fuel LLCOxford2006-02-01
Budney & Sons Services, LLCDeep River2022-11-27
Bulletproof Systems LLCWaterbury2025-11-25
Bullseye Refrigeration & A/C Inc.East Haven2020-08-24
Burns Construction Company, Inc.Stratford2022-01-30
Burns Construction Company, INC. (union)Stratford2017-08-28
Burnside Plumbing, Heating & A/C, LLCNorth Stonington2006-02-01
Butkus Plumbing, LLPSouthbury2011-05-26
Byk USAWallingford2025-07-30
C & C Electrical Contractors, LLCMoosup2006-02-01
C & C Electrical Services LLCSouthington2025-10-15
C & C Plumbing and Heating, Inc.East Canaan2012-10-30
C & C Service, LLCStamford2017-04-18
C & D Custom Electrical, LLCWoodbury2014-06-24
C & G Heating & Air Conditioning Inc.Torrington2006-02-01
C & H Electric, Inc.Waterbury2006-02-01
C & M ElectricLakeville2006-02-01
C & N Mechanical, INC.Glastonbury2006-02-01
C & T Electric CorporationVernon2006-02-01
C Ward Electric LLCCoventry2014-11-09
C-B Manufacturing and Tool Company, Inc.Terryville2021-10-03
C.b.r.e. INC - CheshireCheshire2026-07-14
C.H. Nickerson & Co., Inc.Torrington2006-02-01
C.J.'s Plumbing Services, LLCBethel2006-02-01
C.P. & Sons Electric, LLCDanbury2006-02-01
C.R. Trudeau & Sons Plumbing & HeatingGrosvenordale2006-02-01
C.t.s. Heating & Cooling, INC.West Haven2006-02-01
C.V. Longo Mechanical Service Inc.Stamford2006-02-01
CAG Electrical Co. Inc.Hamden2006-02-01
Cahill Electrical Services, LLCNorth Haven2019-09-18
Calkins ElectricWaterford2006-02-01
Call The Bee H, C, P & ElectricalFarmington2021-04-04
Call the PlumberTrumbull2024-04-14
Calvert Safe & LockDerby2015-10-26
Cambridge Electric, LLCProspect2015-04-06
Cambridge Specialty Company, INC.Berlin2019-09-17
Campbell Cooling, LLCNewington2007-01-08
Campbell Plumbing and HeatingMoosup2024-10-31
Camsan, INC.Stamford2006-02-01
Candido Electric LLCMilford2006-03-13
Candito Plumbing and HVAC, LLCStamford2021-03-10
Candlewood Valley Heating & A/C LLCNew Milford2009-01-08
Capitol Glass Co., INC.West Hartford2006-02-01
Carl Jordan Plumbing & Heating, LLCMadison2007-03-07
Carone ElectricRocky Hill2025-02-10
Carpin Manufacturing, Inc.Waterbury2026-04-28
Carrier Group, Inc.Plainville2006-02-01
Caruso Electric Co.New Britain2006-02-01
Casagrande Brothers Heating & AcGuilford2025-10-20
Cascio Plumbing LLCOakdale2023-10-25
Casey Electric LLCBridgeport2006-02-01
Casey Electrical Services, LLCPlainville2018-08-12
Casey Fuel Co., Inc.Ridgefield2006-02-01
Casner Electric, LLCMilldale2013-11-04
Cassella Electric, LLCHamden2021-09-01
Castle Heating and A/cMeriden2006-04-26
Castle View Enterprises, LLCMeriden2011-09-21
Caswell & Sons Contracting, LLCCanterbury2018-10-30
Cavoto Plumbing & Heating, LLC.Stratford2006-02-01
Cawiamca, LLCOld Saybrook2020-12-17
CB Mechanical Services, LLCNorth Canaan2024-05-23
CE Electrical Contractors, LLCNew Britain2014-11-09
Cedar Point MechanicalStratford2026-04-27
Ceil Plumbing & Heating, Inc.Pawcatuck2006-02-01
Celco Heating & Air ConditioningBridgeport2006-02-01
Central Air LLCBrookfield2025-05-15
Central Connecticut Cable Co., Inc.Thomaston2006-02-01
Central Ct Coast Ymca INCStratford2025-07-15
Central Mechanical Services, INC.Cromwell2006-02-01
Cerreto Associates, LLCDayville2015-05-26
CF Plumbing, LLCWest Hartford2024-08-12
Chaffee Management, LLCStratford2022-04-27
Champion ElectricStratford2006-02-01
Chaput Electric LLCWoodstock2016-01-10
Charles Wright PlumbingEast Haven2006-02-01
Charter Oak Mechanical Services, LLCManchester2008-05-04
Charter Oak OilWindsor Locks2006-02-01
Chase Glass Company, Inc.East Hartford2006-02-01
Chase Mechanical, LLCSouthington2018-04-11
Chenail LLCW Hartford2025-03-24
Chestnut Electric Corp.Wilton2006-02-01
Chop Shop 132Shelton2026-03-09
Chouinard Mechanical, LLCPomfret Center2024-07-01
Chowanec Well Drilling, LLCColumbia2026-03-04
Cintas Corp. #2Plainville2009-04-30
Cisco Heating and Cooling Pros, LLCWest Haven2021-12-16
City BES, LLCEllington2022-07-17
City Facilities ManagementSouthington2020-02-12
City of Norwalk Parks and RecretationNorwalk2021-03-25
CJC Electric, LLCHamden2011-08-08
Clear Blue Water SystemsPortland2026-04-12
Clemson Sheet Metal, LLCEllington2010-12-16
CLG Electric, LLCSomers2006-02-01
Click Bond, Inc.Watertown2010-04-21
Clintonville Oil, Inc.North Haven2024-03-14
Clog Master, LLCWest Hartford2018-10-31
CMR Electric, LLCBethany2018-04-02
CNM Heating Cooling & Piping LLCStorrs2020-09-17
Coastal Group ElectricGroton2026-01-22
Coastal Inc.Milford2006-02-01
Coastal Mechanical Services INC.Stratford2007-10-14
Coherent CorpMonroe2022-07-04
Coldfire Mechanical, LLCWinsted2022-08-29
Collier Electrical Corp.New Britain2006-02-01
Columbia Sheet MetalNorth Windham2006-02-01
Comfort Solutions Heating & Cooling, LLCSouthington2013-09-23
Command CorporationEast Granby2006-04-05
Commercial Electrical Systems, LLCMiddletown2009-12-06
Commercial GlassBridgeport2011-08-02
Commercial Kitchens, Inc.Milford2011-03-17
Commercial Storefront Services Inc.South Windsor2006-02-01
Community Renewal Team ECEHartford2025-06-10
Comnet Communications, LLCBethel2006-02-01
Companion Industries, Inc.Southington2006-02-01
Component Engineers, Inc.Wallingford2021-09-01
Connect Electric, Inc.Durham2012-01-02
Connected Systems, LLCOld Lyme2008-11-04
Connecti-Cuts, LLCWest Hartford2020-03-26
Connecticut Air Systems, Inc.Milford2006-09-12
Connecticut Airconditioning Sheetmetal HeatinPlainville2022-12-11
Connecticut Boiler Repair & Manufacturing Co.West Hartford2006-02-01
Connecticut Combustion CorporationMiddlebury2006-10-09
Connecticut Fire EquipmentFarmington2014-07-28
Connecticut Plumbers & Pipefitters LU 777 JACMeriden2006-02-01
Connecticut Spring & Stamping Corp.Farmington2007-08-15
Connecticut Temperature ControlsCromwell2009-02-25
Connecticut Wells - Geothermal Services, Inc.Bethlehem2024-03-31
Connection Plumbing & Heating, LLCOrange2013-12-11
Connole's Electric, Inc.Torrington2006-02-01
Consolidated Electrical Services, LLCMoodus2017-01-08
Conte Plumbing and Heating LLCStamford2025-08-03
Controlled Air INC.Branford2006-02-01
Cool Heat Mechanical Inc.East Granby2019-12-05
Coolsys Commercial & Industrial Solutions, INC.East Hampton2026-03-19
Copper Valley Heating & CoolingMeriden2006-02-01
Cor Electric, LLCOrange2016-12-05
Corbett HVAC Services, LLCWillimantic2019-06-10
Cordone and Tonucci Plumbing, Heating &Orange2006-02-01
Cordova Plumbing & Heating, LLCSouthbury2006-02-01
Cornerstone Electrical Services, LLCBristol2013-12-11
Cornwall Plumbing & Heating, LLCCanaan2010-08-15
Corporate Electric SRBA LLCBrookfield2025-05-11
Correia Excavators Inc.Manchester2019-06-12
Coughlin ElectricEast Haven2024-10-24
County Electric Construction Inc.Bridgeport2006-02-01
Courtney's Plumbing & Heating, LLCBridgeport2024-01-22
Cousins Oil Co., Inc.Bristol2006-02-01
Coviello Plumbing & Heating, Inc.Waterbury2006-02-01
CPE Electric, LLCWolcott2006-02-01
Creative Electric, LLCTorrington2011-02-09
Crespos Hair LoungeEast Windsor2024-03-04
Crest Mechanical Services, Inc.Hartford2006-02-01
Crocco MechanicalThomaston2026-01-08
Cromwell Energy Inc.Cromwell2006-02-01
Crowthers Electric, LLCEast Hampton2022-08-29
CsdnbNew Britain2026-01-08
CSS on Demand, LLCMilford2016-07-27
CT Electrical ContractorsSouthington2025-05-11
CT Precision IncNew Britain2025-12-23
Ct Pro Water Services LLCSeymour2025-03-09
CT Security Service LLCTerryville2026-09-15
CTelectrical.com LLCBeacon Falls2009-10-05
Currie's Plumbing, Heating & Cooling, Inc.Oakdale2006-02-01
Custom Air Systems INC.Bridgeport2007-01-09
Custom Electric, INC.Manchester2024-10-20
Custom Sheet Metal, LLCBethany2008-05-04
Custom VentilationWillington2017-01-08
Cuts, LLCMilford2022-10-17
Cyr Plumbing and Heating Services IncGriswold2025-10-07
D & G Contractors, INC.Plainville2025-06-09
D & H Mechanical Service LLCTolland2017-04-11
D & R PlumbingTrumbull2006-02-01
D'Amato Construction Company, Inc.Bristol2009-02-22
D'amico Electric INC.New Fairfield2010-02-08
D'Arinzo Electric & Contracting, LLCStamford2006-02-01
D. Dubaldo Electric Co., LLCManchester2006-02-01
D. Kay Electrical Contractors, LLCStratford2010-12-01
D. Rose Mechanical, LLCWoodbury2006-03-09
D.B. Electric, Inc.Mystic2006-02-01
D.C. Corp including C.E.M., LLCNorth Haven2022-01-30
D.C. Henry Electrical Contractors, LLCFairfield2006-10-02
D.F.G. Electric Co. Inc.North Branford2006-02-01
D.S.O. Mechanical CorporationTrumbull2006-02-01
D/e/f Services Group LtdOld Saybrook2006-02-01
DACRUZ Manufacturing, Inc.Bristol2017-10-15
Dale O. Duncan Inc.Stamford2006-02-01
Dalling Heating & Air ConditioningShelton2025-03-09
Dan Boyers Plumbing, LLCNorth Branford2016-05-09
Dan Terry Plumbing LLCNew London2006-02-01
Dana DePercio Electric Inc.Rocky Hill2006-02-01
Danbury Public SchoolsDanbury2025-08-13
Dandelion Energy Corp.Windsor2021-10-17
Daniels Oil, Inc.Portland2006-02-01
Danielson Glass CoBrooklyn2006-02-01
Darien Plumbing & Heating Inc.Darien2006-02-01
DAT Electrical IncEaston2014-07-29
Data Tel L.L.C.Bridgeport2006-02-01
Data-Link CorporationSouth Meriden2007-03-12
Davenport Electric Co., Inc.Weston2006-02-01
David Electric Inc.Pomfret Center2006-02-01
Davidson Electric, LLCLebanon2021-03-21
Dawson Electric, LLCNorth Branford2025-05-06
Day Kimball HealthcarePutnam2023-03-14
Day Plumbing & Heating Co IncTorrington2025-11-19
Db Lunt Electrical Contractors LLCOakdale2011-07-06
DC Sheetmetal, LLCYantic2006-02-01
DCR Plumbing, LLCGoshen2023-03-15
DDM MechanicalMiddlebury2023-12-18
Deacon Excavating LLCMorris2026-08-10
Deak Electric, Inc.New Milford2006-02-01
Decker & Beebe, Inc.Canaan2006-02-01
Dedicated Electric LLCPortland2025-05-07
Deer Electric, LLCWaterford2021-09-30
DeForest Electrical Contracting, LLCDarien2020-10-28
Deitch Energy LLCHartford2011-11-30
Delmar Electrical Contractors LLCWatertown2006-02-01
Delponte Plumbing & Heating, LLCGlastonbury2019-04-17
DeMarco Plumbing CompanyDanielson2013-08-29
DeMartino Electric LLCStamford2006-02-01
Deming Electric, LLCSuffield2008-12-08
Demsey Manufacturing Company, INC.Watertown2006-02-01
DeNicola Plumbing LLCDurham2006-02-01
Densmore Oil Co.Stonington2006-02-01
Dependable Energy Inc.Prospect2007-10-10
Deringer-Ney Inc.Bloomfield2006-08-10
Desjardins Electric, LLCWallingford2022-12-27
Deus Zafe Holdings INCShelton2026-04-27
Devine Brothers, INC.Norwalk2009-03-18
DGJ Elect. & Home Improvemnt Cont., LLCStratford2010-02-24
DHM Electrical Services, LLCMadison2018-07-19
DiMaggio Plumbing & Heating, Inc.Sherman2006-02-01
DJ Melodia Plumbing & HeatingShelton2014-07-29
DMA Electric, LLCMiddletown2021-06-08
DMC Unlimited, LLCWest Suffield2022-03-20
DNA Mechanical Services LLCWolcott2006-02-01
DOC Service, LLCAnsonia2024-01-24
Dominion Nuclear Connecticut, Inc.Waterford2012-12-02
Don's Heating & Cooling Solutions LLCEllington2012-09-11
Donahue General Contractors, Inc.Hampton2023-04-18
Donald Sullivan & Sons LLCPlantsville2006-02-01
Done Right Plumbing Services, LLCMarlborough2023-06-14
Donnelly Heating & A/C Maintenance Inc.Newtown2006-02-01
Donnelly SecurityBrookfield2006-02-01
Douglas Mechanical ServicesBerlin2006-07-18
Douglas Plumbing, Heating & Air ConditioningFarmington2006-02-01
Dpo Nutmeg LLCNorwich2026-06-16
Drain King, LLCTrumbull2021-02-21
Drain Wizard Plumbing LLCHamden2026-07-08
Drainworks Plumbing & Septic, LLCColchester2024-04-14
DRC Electric, LLCChaplin2017-01-08
DRT Aerospace, LLCWinsted2022-08-30
DS Comfort Control LLCCoventry2009-11-03
DuBaldo Security Systems, Inc.Manchester2006-02-01
Duct DiagnosticsMilford2026-08-03
Ductco, LLCBloomfield2006-02-01
Ductworks HVAC Services, LLCSouthington2007-10-16
Duncklee, Inc.Stonington2006-02-01
Dutch Oil Company, Inc.Moodus2011-07-12
Dyna Electric, Inc.Manchester2006-02-01
Dynamic Electrical Systems, LLCMeriden2021-07-13
Dynamic Mechanical Plumbing, Heating & ACPlainville2007-08-15
Dynamic Security Systems, Inc.Milldale2007-03-28
Dynamo LLCWatertown2026-03-30
Dynasty Barber Lounge LLCNew London2026-04-07
Dyno Nobel, Inc.Simsbury2020-03-09
E & E Tool & Mfg. Co., Inc.Winsted2006-02-01
E & J Comfort Systems, LLCTrumbull2022-09-11
E & M Barbershop and SalonWest Haven2019-06-18
E and A Electric, LLCNorwalk2023-04-17
E-Tech Systems LLCAndover2006-02-01
E-Z Oil Co., Inc.Manchester2006-02-01
E. Haberli Electric LLCMeriden2006-02-01
E.D.S. Mechanical Inc.Putnam2022-10-31
E.t.c. Electrical Contractors, LLCWest Haven2024-03-04
Eagle Electric Services LLCWashington Depot2006-02-01
Earth Contractors, LLCKensington2023-03-14
Earth Smart SolarRocky Hill2024-01-22
Earthlight Technologies LLCEllington2025-08-04
East Coast ElectricStamford2006-02-01
East Coast Mechanical Inc.Cheshire2010-10-14
East Coast Sheet Metal LLCLitchfield2006-02-01
East River Energy, Inc.Guilford2006-02-01
Eastconn Regional Educational Service Center IncorporatedHampton2025-05-21
Eastern Conn. Heating CompanyNorwich2006-11-07
Eastern CT Solar LLCOld Lyme2026-07-05
Eastern Ducts LLC dba Kennedy Sheet MetalBozrah2006-02-01
Eastern Fuel CorporationHamden2006-02-01
Eastern Mechanical Services, Inc.Oxford2006-02-01
Eastern Water Solutions, Inc.Oxford2007-04-19
Eastside Electric INC.Harwinton2006-02-01
EB Electrical Services, LLCFairfield2024-07-08
ECEC at Temple SinaiStamford2025-06-05
ECP Electric, LLCFairfield2010-12-16
ECUA-Electric, LLCBethel2016-09-05
Ed Bartelli, Inc.Waterford2006-02-01
Ed's Plumbing, LLCWaterford2023-10-04
Edgerton, INC.Monroe2006-02-01
Edward Segal Inc.Thomaston2006-02-01
Effective Plumbing LLCNorwalk2006-09-24
Efficient Lighting Maintenance CompanyBrookfield2006-02-01
Electric BoatGroton2006-02-01
Electric Works, Inc.Rockfall2006-02-01
Electrical Connection, INC.Newington2006-02-01
Electrical Contractors, Inc.Hartford2006-02-01
Electrical Energy Systems CorporationSouthington2006-02-01
Electrical Facilities IncorporatedWallingford2006-02-01
Electrical Images, LLCSouthington2017-09-06
Electrical Services Group, LLCNew Haven2012-03-21
Electrical Systems, Inc.Enfield2006-02-01
Electrical Works Inc.Fairfield2006-02-01
ElectriSource Corp.Berlin2012-12-17
Electronic Security & Controls Systems, Inc.Bridgeport2006-02-01
Electrons Unlimited, LLCBrooklyn2016-04-21
Element 119, LLCPlainville2024-04-14
Elevate style loungeOrange2025-07-08
Elevator Constructors Local 91 JacEast Hartford2006-02-01
Elian's BarbershopDanbury2025-12-10
Elicense OrgtestLyme2025-05-07
Elite Barbershop StudioWaterbury2021-04-11
Elite Comfort LLCHarwinton2026-06-16
Elite Electrical Contracting, LLCEast Windsor2019-02-13
Elite Fire Protection Services, Inc.Naugatuck2020-10-21
Elite Fire Protection, LLCPlainville2019-06-19
Elite Plumbing, Heating & Fire ProtectionBerlin2025-09-02
Elites Plumbing LLCEast Hartford2025-06-19
Ellington Energy Inc. DBA Violette MechanicalEllington2007-09-03
Elm Electric, Inc.-ctMiddletown2021-10-18
Emond Plumbing & Heating, INC.Mystic2011-09-21
Empire Barber StudioMeriden2024-10-30
Encore Holdings dba Encore Fire ProtectionMiddletown2006-02-01
Energy Connection, Inc.Collinsville2006-02-01
Energy Management ProfessionalsWaterbury2017-11-13
Energy Unlimited LLCManchester2008-02-20
Engineering Specialities, Inc.North Branford2024-10-24
Enterprise Electrical Contractors, Inc.Newtown2006-02-01
Entire Home IncorporatedOxford2011-02-24
Environmental Control Inc.Stratford2006-02-01
Environmental Engineering, Inc.Milford2006-02-01
Environmental Systems Corp.West Hartford2006-02-01
EON Electrical, LLCSouth Windsor2006-07-16
Equipment Unlimited Enterprises LLCSeymour2006-02-01
Eric Sabo Plumbing, Heating and Cooling, LLCCanterbury2019-02-26
Escape Plumbing & Heating, LLCMorris2021-08-17
ETS Electrical ConstructionPreston2025-05-26
Eurolux Salon and Day Spa LLCBrookfield2024-12-16
Everett Electrical Contractors, LLCMiddletown2006-11-27
Evergreen Heating and Cooling, LLCHamden2024-12-05
Evering Electric, LLCPawcatuck2012-03-06
Everlast Energy, LLCManchester2023-07-16
Everlasting Beauty LLCHartford2026-04-19
Everon, LLCWallingford2021-11-11
Evolution Air, LLCStamford2017-08-27
Excello Tool Engineering & Mfg. Co., Inc.Milford2006-02-01
Exoban, LLCPlainville2024-07-15
F & S Electric ServicesHartford2016-04-12
F&h Plumbing and Heating LLCWallingford2025-10-23
F. Conte Electric Corp.Stamford2006-02-01
F. J. Hubeny, INC.Milldale2006-02-01
F.A.D. Mechanical, LLCNorth Haven2007-02-28
F.F. Hitchcock Co., Inc.Cheshire2006-02-01
F.J. Chard & Son Inc.Burlington2006-02-01
F.T.I.S.N.E. Painters DC #11Middletown2007-04-18
Facilities Compliance Fire Protection, LLCBerlin2019-11-20
Facility Solutions GroupStonington2006-09-04
Fades Of ArtRocky Hill2026-02-18
Fahrenheit Mechanical Services, Inc.BroadBrook2006-02-01
Farmington Valley Home Services, LLCGoshen2021-08-17
Farmington Valley Plumbing, LLCEast Granby2021-02-24
Farrel CorporationAnsonia2014-03-20
Fcr Electric, LLCFairfield2013-03-11
Federal Electric Construction Co., INC.Stratford2006-02-01
Ferguson Electric Company, Inc.Plainville2006-02-01
Ferguson Mechanical Co., INC.Plainville2006-02-01
Fils Pro Plumbing, LLCBristol2017-09-06
Finishing Trades Institute of S.N.E. Inc.Middletown2006-02-01
Finney Electric LLCCanaan2014-05-04
Fire Control Service Co., INC.New Milford2006-02-01
Fire Equipment Headquarters, Inc.Torrington2026-03-24
Fire Protection Alarms, LLCCheshire2006-02-01
Fire Protection Extinguishers, LLCCheshire2025-04-20
Firehouse FuelsBurlington2016-02-02
Firestop, Inc.Bethel2006-02-01
Fitzgerald & Wood, Inc.Branford2006-02-01
Flip the Switch Electrical064512026-06-29
Floriano's Plumbing Inc.North Haven2006-02-01
Fluor Enterprises, Inc.Montville2019-11-07
Foley Furnace Inc.Chester2016-03-15
Foley's Pump Service, Inc.Danbury2008-04-03
Fontaine Mechanical Heating & A/C, Inc.Forestville2006-02-01
Force Fire ProtectionStamford2026-06-14
Forest Construction Company, LLCBeacon Falls2023-04-17
Forger-Kunkel Plumbing & Heating, LLCFairfield2006-02-01
Fortin Electric Co.New Haven2006-02-01
Four Point Mechanical LLCEast Hampton2026-01-20
Fourslide Spring & Stamping, Inc.Bristol2006-02-01
Fox Heating Service Inc.Tolland2006-02-01
Fph, LLCBrookfield2011-07-25
Frank Clark Electric, LLCRidgefield2013-05-28
Frank L. Macca Plumbing & Heating, Inc.Hartford2006-02-01
Frank Lopiano, Co.Stamford2021-03-28
Frank's Plumbing & RemodelingStratford2006-02-01
Franklin Electric, Inc.New Fairfield2006-02-01
Fraser Plumbing LLCStamford2006-02-01
Free Enterprise Telephone SalesAnsonia2006-02-01
Friedmann Electric Inc.Berlin2006-02-01
Friends Center for ChildrenNew Haven2025-05-22
Frontline Electric LLCThomaston2007-03-28
Fulton Electrical ContractorsSouthbury2025-10-05
Funk Boiler Works, Inc.West Haven2007-03-11
G & O Mechanical LLCTrumbull2006-05-07
G & R ManufacturingNaugatuck2006-02-01
G.c. Electric, INC.Cheshire2006-02-01
G1cuts Barbershop, LLCMiddlebury2022-03-08
Gabe's Electrical Services, LLCBrookfield2018-04-29
Gardiner Electric, LLCColchester2026-06-30
Gary Franco's Plumbing LLCOxford2021-01-19
Gatsby Glass Of Fairfield CountyBridgeport2026-08-03
GB plumbing and son's, llcFairfield2026-04-27
Geary's Plumbing, LLC.New Milford2011-08-02
Geddes Electric, LLCThomaston2024-10-24
Gem Manufacturing Co., Inc.Waterbury2006-02-01
GEM Plumbing LLCWaterbury2006-02-01
Gemco Manufacturing Co., Inc.Southington2006-02-01
Generation Plumbing Services, LLCGlastonbury2023-03-15
Genexo Associates, LLCHamden2021-12-26
GEO Plumbing & Heating LLCMadison2006-09-17
George Dudac PlumbingSouthington2026-03-03
Gerard Vernali Inc.Greenwich2025-11-05
Gerber Construction, Inc.Ellington2006-02-06
GH Technical ServicesStratford2026-07-07
Giannitti Electric, LLCNorwalk2018-03-19
Giglio Electric LLCNorwalk2006-02-01
Gillette Electric LLCSharon2026-07-27
Gil’s BarbershopNew haven2025-12-29
Giuffrida Electric Co., Inc.Middletown2006-02-01
GK Electric, LLCSharon2006-02-01
Glacier Mechanical ServicesNew Hartford2024-01-31
Glasco Home Services, LLCSouth Windsor2006-02-01
Glass Contractors, LLCSandy Hook2017-08-27
Glastonbury Landscaping & Irrigation, Inc.Glastonbury2016-04-24
Glastonbury Water SystemsGlastonbury2018-04-02
Global Steering Systems, LLCWatertown2015-03-23
Global Tech Systems, LLCPortland2016-08-23
Globe Electric, LLCNorth Branford2006-02-01
Godburn Plumbing & Heating, LLCTorrington2023-01-29
Gold Coast PlumbingNorwalk2025-09-08
Golden Coast Plumbing, LLCStamford2023-12-03
Golden Electric & Communications, LLCBerlin2006-02-01
Goldenrod Corp.Beacon Falls2023-04-17
GONZO Heating and Cooling LLCNewington2025-11-02
Good Hill Mechanical Services, Inc.Woodbury2006-02-01
Gottier ElectricEllington2018-03-19
GR Wade LLCHamden2006-03-14
Granby Electric, LLCGranby2021-10-17
Grass Helper Lawn Care Inc.Granby2006-02-01
Greco & Haines, Inc.Derby2006-02-01
Green Earth Roofing SolutionsEast Windsor2026-05-13
Green Power Energy, LLCDurham2021-12-12
Greens Ledge Electric, LLCNew Canaan2023-04-17
GREENTEMP Mechanical Services LLCGroton2026-07-16
Greenwich Electric, Inc.Greenwich2012-07-30
Greenwich Heating & Cooling, LLC.Greenwich2021-09-01
Gregg Landry Plumbing & Heating LLCOld Lyme2013-05-28
Grela Well Drilling, Inc.Terryville2024-06-12
Grenier Electrical LLCColchester2026-02-16
Griffin Electrical Contractors, Inc.Southington2006-02-01
Griffin Plumbing Services LLCNorth Haven2026-07-26
Grillo Electrical Services, Inc.Branford2006-02-01
Griswold Plumbing Services, LLCWestbrook2014-09-28
GT Electric, LLCNorwalk2006-02-01
GT Plumbing, Heating & Cooling, LLCNorwalk2018-07-26
Guglietta Plumbing and Heating, LLCBristol2023-03-14
Gunzy Electric Inc.Westport2006-02-01
Guy's Heating & CoolingWatertown2006-02-01
Guy's Inc.Niantic2006-02-01
Guzallis ElectricSalem2006-02-01
H & E Electrical ServiceHartford2006-02-01
H & R Electric and General Contractor LLCWest Hartford2025-04-13
H & T Waterbury, LLCWaterbury2006-02-01
H&M Mechanical LLCFairfield2026-06-14
H. Hulse, Inc.Stratford2006-02-01
H.C. Rohde Oil Company, Inc.Wethersfield2010-09-28
H2O Equipment Company, Inc.East Hampton2008-01-31
Hands&Hustle BarbershopWest Haven2025-05-29
Hanna Electric INC.Clinton2009-05-12
Hantsch Electric, Inc.New Milford2006-02-01
Hanwha Aerospace USACheshire2006-02-01
Happy Little Faces LLCHartford2025-07-15
Harborview ElectricMilford2006-02-01
Hardy Enterprise, LLCHartford2024-04-15
Harp Home Services, LLCWindsor2006-02-01
Harrington Plumbing & HeatingPawcatuck2025-10-21
Harry Wright Electrical Co.Washington Depot2006-02-01
Hart Mechanical, Inc.Glastonbury2006-02-01
Hartford Boiler Repair Works INC.West Hartford2006-02-01
Hartford Electricians JATC Local 35Hartford2006-02-01
Hartford Sprinkler Co., Inc.Bloomfield2006-02-01
Hartman Company, LLCWallingford2017-03-06
Haskins Electric, LLCEssex2014-07-22
Hayes Plumbing, LLCNorthfield2020-02-02
Heat Shock 2 LLCSouthington2022-02-22
Heating & Cooling Solutions, LLCNorwich2023-08-14
Hefferon Heating & Cooling LLCDanbury2006-02-01
Hellas Air Temp Inc.Norwalk2008-08-19
Hello, Gorgeous SalonGroton2026-01-07
Herrick Electric LLCAmston2008-06-26
Hi Ho Petroleum, Inc.Bridgeport2006-07-27
Hi-Tech Mechanical, LLCHarwinton2018-10-31
Higgins Enterprises Inc.East Hampton2006-02-01
High Performance Heating & Air ConditioningBrookfield2012-05-10
High Rock Water and MechanicalNaugatuck2022-09-22
High Tech Comfort LLCSouth Windsor2026-06-07
High Wire Electric, LLCWarren2017-04-30
Highland Electric, LLCBaltic2024-12-18
Highland Manufacturing, Inc.Manchester2025-02-10
Hightower Electric, LLCLedyard2021-02-24
HL BowmanMiddletown2025-11-12
Hobson & Motzer, Inc.Durham2006-02-01
Hoffman Fuel CompanyTrumbull2006-02-01
Holcomb ElectricFairfield2006-02-01
Holmes Electric LLCWinsted2006-02-01
Holo-krome, Division of Fastenal ManufacturingWallingford, CT2025-08-05
Home Comfort Heating & Cooling, LLCEast Haven2018-04-02
Home Comfort Practice, Inc.Stratford2023-10-25
Home Services & More LLC dba Mr.Rooter PlumbingNorth Branford2026-05-26
Home Square, LLCNorwalk2021-03-04
Homestead Fuel INC.Ellington2006-02-01
Hometown Heating & Cooling, LLCAvon2021-05-02
Honest Air, LLCPlantsville2023-12-04
Honey Bear Learning CenterStratford2025-09-01
Hop Energy LLC Dba Automatic TlcPortland2025-06-22
Hop Energy, LLC dba DDLC EnergyNew London2006-02-01
Hop Energy, LLC dba Kaufman Fuel CompanyPortland2006-02-01
HOP Energy, LLC dba Mercury EnergyPortland2006-02-01
HOP Energy, LLC dba Valley OilPortland2006-02-01
Hope Plumbing, LLCProspect2017-10-15
Horberg Industries, INC.Bridgeport2022-03-20
Horton Electrical Services, LLCCanton2006-02-01
Horvath Plumbing & Heating, LLCStamford2013-10-21
Hotwired Electric LLCDanbury2025-03-09
House Brothers Plumbing Contractors, Inc.Glastonbury2006-02-01
House of BlendzWillimantic2020-07-06
House of Dolls Beauty SalonNew Britain2025-10-01
Houzpital, LLCNew Britain2024-11-20
Hubbell Power Systems, Inc.Winsted2023-02-21
Hull Alarms, LLCNew Hartford2023-12-18
Humble Electric Service and Consulting, LLCFarmington2024-09-15
Hungerfords, Inc.North Haven2006-12-13
Hunter Mechanical, LLCGoshen2025-03-24
Huntington Electric, LLCShelton2006-02-01
Husky Energy and Propane, LLCWoodbury2024-08-27
HVAC Specialists, LLCShelton2024-10-20
Hy-TEK Plumbing & Heating, LLCPreston2016-02-29
Hydro-Pure Water Treatment, LLCColchester2009-12-20
Hygrade Mechanical Services, LLCWest Hartford2007-09-30
Hyper Heat and Cool, LLCNewington2024-10-10
I.B.E.W. JATC Local Union 488Monroe2006-02-01
I.T.S. Electric, LLCThomaston2021-09-23
Ideal Electric Ltd, LLCOxford2006-11-08
Ideal Electrical Solutions, LLCUnionville2024-11-05
Ideal Mechanical Services, LLCTolland2022-02-22
Igor's Electrical Services, LLCWest Hartford2024-01-24
II Waavy Barber LoungeMeriden2025-11-23
Illuminated Electrical Services, LLCWallingford2020-10-14
Illumination Electric, LLCHartford2019-09-17
IMPACT Fire Services LLC ( Torrington)Torrington2006-02-01
Impact Fire Services, LLCWillimantic2006-02-01
Independent Mechanical, Inc.Uncasville2018-01-24
Industrial Drives and ControlsWaterbury2006-02-01
Industrial Electric & Construction, LLCPlainville2006-02-01
Inland Properties, LLCWindsor2022-06-30
Innovative Heating & Cooling, LLCMilford2023-08-28
Innovative Services INCTolland2006-02-01
Integrated Technical Systems IncorporatedWallingford2010-05-04
Integrated Wiring Solutions LLCEast Windsor2019-07-16
Interstate Electrical ServicesWindsor2006-02-01
Interstate Welding & Mechanical Co., INC.Plainville2006-02-01
ION Solar Pros, LLCMiddlebury2021-11-03
Iovanna Mechanical, LtdNorth Haven2024-08-25
Irie Energy Heating & Cooling, LLCNiantic2023-05-01
Iron Workers JATC Local Union 424North Haven2006-02-01
Iron Workers Local Union #15Hartford2006-02-01
Irrigation Specialists LLCNorth Branford2006-02-01
ITW DrawformWaterbury2006-02-01
ITW Stamp Tech FastenersNaugatuck2007-09-25
J & B Electrical Construction, LLCFairfield2006-02-01
J & B Mechanical Contractors, LLCEast Hartford2006-02-01
J & J Clap Electrical Contractors LLCDanbury2006-02-01
J & J Precision Eyelet, Inc.Thomaston2013-11-26
J & K Electric & Alarms, LLCMadison2023-10-04
J & M Merrell Plumbing & Heating LLCCoventry2006-02-01
J & M Plumbing & Heating, LLCLitchfield2006-02-01
J Mellington Fire Protection, LLCSouth Windsor2023-07-23
J P Maguire Associates INCWaterbury2025-07-30
J&a Oil Delivery LLCNaugatuck2026-03-11
J&P Plumbing LLCNorwalk2025-05-04
J. Fusaro Plumbing & Heating, Inc.Newtown2014-03-02
J. Mulvaney Plumbing & Heating, Inc.Ridgefield2006-02-01
J. Socci Plumbing, LLCStamford2017-09-21
J. V. Canestri Plumbing & HeatingEast Haven2025-09-10
J.C.S. Electrical Services LLCWolcott2010-07-21
J.D.M. ElectricStonington2017-02-02
J.E. Shea Electric, Inc.Plantsville2006-02-01
J.G. LaRochelle CompanyBroadbrook2007-03-25
J.h. Barlow Pump Supply INC.Naugatuck2006-02-01
J.H. LaPierre, Jr. & Son, LLCWindsor Locks2006-02-01
J.j. Sullivan, INC.Guilford2006-02-01
J.M. Cipriano & Sons LLCProspect2007-10-30
J.M. Cyr Construction LLCAshford2026-05-03
J.M. Edwards Electric LLCDurham2008-07-28
J.P. Dunn Heating & Cooling, LLCNorthfield2006-02-01
J.P. Heating & Cooling, LLCStratford2006-02-01
J.P. Kempf Co., Inc.Milford2006-02-01
J.R. Merritt Controls, Inc.Stratford2024-03-10
J.S. Electrical, LLCPlainville2012-09-18
J.T.N. Electrical, Inc.Windsor Locks2006-02-01
JA-MA Wellington Electrical Contractors, Inc.Waterbury2006-02-01
JAC Technologies, Inc.West Haven2008-06-08
Jacobs Vehicle Systems, Inc.Bloomfield2012-07-22
Jacozzi Phc, LLCMonroe2026-08-24
James Casey & Sons Plumbing & HeatingFalls Village2024-11-20
James Rybczyk Instant Response Plumbing and Heating and Air Conditioning INCBristol2026-06-28
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James S. Sullivan Cable Co., Inc.Waterbury2006-02-01
Jarvis Airfoil, Inc.Portland2019-05-23
Jbs Barber Spa LLCNew London2026-04-09
JC Heating & Cooling, LLCBozrah2023-08-14
JCO Plumbing & Heating LLCCanaan2021-04-04
JCR Electric, LLCOxford2024-08-15
JDH Plumbing and HeatingWest Haven2022-10-31
JDS Electric, LLCMeriden2006-02-01
Jeff Gmuer Plumbing, LLCBrookfield2025-05-15
Jennings Oil CompanyDanbury2006-02-01
JES Mechanical LLCCoventry2025-10-19
Jessica's Color Room SalonCromwell2021-09-09
Jessie Electrical SystemsEnfield2006-02-01
Jewish Community Center, INC.Stamford2025-06-25
Jezierski Plumbing & Heating Inc.Thompson2006-02-01
Jfc Electrical, LLCNew Milford2023-01-04
JK Energy Solutions LLCThomaston2014-08-13
JKS SystemsGlastonbury2014-12-11
JL Sousa Electric LLCNew Fairfield2025-03-09
Jll MechanicalWoodbury2024-09-26
JLS Design, LLCNew Britain2022-08-29
JLS Electric, Inc.Sherman2008-12-01
JMB Plumbing, LLCKensington2017-08-27
Jml Electrical Services LLCBridgeport2025-11-24
JNR Plumbing, LLC.Stamford2013-04-02
Jo-vek Tool & Die Manufacturing Co.,inc.Bristol2006-02-01
Joe Simpson Plumbing & HeatingWoodbury2023-02-15
Joe The PlumberNewtown2013-04-02
John J. Brennan Construction CompanyShelton2017-08-28
Johnson Controls Fire Protection, LPRocky Hill2006-02-01
Johnson Plumbing, Heating & Engeneering, LLPStamford2019-03-17
Jones Lang LaSalle Services, Inc.Hartford2006-02-01
Joseph Enterprises, LLCNorwalk2023-04-17
Joseph S. Sabino Plumbing & Heating, LLCRowayton2008-02-18
Josh the Electrician, LLCMiddlebury2024-04-14
Joshconz Company LLCSouth Windsor2006-02-01
JP GuerraMonroe2026-03-23
JR Heating & Cooling, LLCPlainville2006-02-01
JR Morrison Electric LLCBurlington2021-10-13
JRM Electric LLCSterling2020-11-05
JRT Electric, LLCManchester2024-07-10
Jrw Services LLCMoosup2026-09-15
JTP Plumbing Inc.South Windsor2013-04-28
Judge Electric, Inc.Bridgeport2006-02-01
Junga ElectricMilford2010-08-23
K & F Plumbing, LLCWaterford2024-09-15
K-Man Glass Corp.Bethel2006-02-01
K.B. PlumbingNew Milford2025-01-27
K.T.M. Electrical Construction, LLCOrange2006-02-01
Kamatics CorporationBloomfield2012-11-12
Kams L.l.cThomaston2026-04-22
Karotech, Inc.Oxford2010-03-31
Kate Emilies A Salon llcDanbury2025-07-14
Kavallines Electric, LLCNew Canaan2022-11-27
Kelley's Heating & Cooling, LLCNew Milford2024-01-03
Kellsec, LLCCromwell2024-08-27
Kelly's Well Pump ServiceStratford2018-04-29
Ken Burns Electrical Contractors, INC.Newtown2006-02-01
Kennedy, Gustafson & Cole, INC.Berlin2006-02-01
Kenney Electrical Services, LLCRidgefield2022-11-02
Kerigan's Fuel, Inc.Bridgeport2019-10-02
Kevin Simpson Plumbing LLCNorwalk2026-08-03
Key Electric LLCOld Lyme2006-07-16
Khannouchi Electric LLCFairfield2025-04-13
King Air Conditioning, LLCNewington2007-07-09
King Industries, INC.Norwalk2006-02-01
KM Electrical, LLCNew Fairfield2024-04-15
KMB Electrical Services LLCBranford2006-02-01
Kneeland Heating & Cooling, LLCGales Ferry2025-03-12
Konopka Electric LLCTorrington2006-02-01
Krk Plumbing And HeatingStamford2026-03-29
Kronenberger & Sons Restoration LLCMiddletown2006-02-01
KSB Electric, LLCBolton2022-07-19
Kud-Pro Plumbing & Drain Cleaning, LLCNewington2023-12-03
Kyrsten Mae Artistry LLCMystic2026-08-26
L & I Refrigeration, Inc.Middlefield2006-02-01
L & L Mechanical, LLCGoshen2006-02-01
L & M Electric, LLCNorth Branford2009-11-23
L & P Plumbing & Well Service, LLCTorrington2006-02-01
L & R Mechanical Services, LLCBristol2006-02-01
L Train Electric, LLCMiddletown2011-08-02
L. Holzner Electric CompanyNew Haven2006-02-01
L.C. Schede & Sons, Inc.Stamford2006-02-01
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L.j. Electric Co. INC.Berlin2006-02-01
L.M. Gill Welding & Manufacturing, LLCManchester2020-01-16
L.V. Fuel Co LLCSouth Glastonbury2024-08-27
LA Mechanical Services, LLCRocky Hill2022-12-11
LAB Security Systems Corp.Bristol2014-10-23
Lafleche & Sons Electric LLCDanielson2019-06-19
Laframboise Well Drilling, INC.Thompson2019-09-10
Lagace Electric LLCLisbon2021-11-30
Lagasse Electric, LLCMilford2022-09-11
Lake CompounceBristol2012-10-02
Landmark Air Systems, Inc.Danbury2008-01-23
Landmark Electric, LLCMonroe2023-08-14
Landmark Electrical Contractors LLCNew Britain2006-02-01
Lantern Electrical, LLCGlastonbury2015-12-10
Lastra Electric LLCStratford2025-05-13
LC Electric, Inc.Madison2006-02-01
Lc Mechanical, LLCEast Hartford2022-03-27
Leahy's Fuels, Inc.Danbury2006-12-25
Leary Electrical Services, LLCAvon2019-06-18
Ledge Light Plumbing & Heating, LLCGroton2018-01-24
Lee Seward Plumbing & Heating Inc.New Milford2006-02-01
Legendz Barbershop, LLCMeriden2024-09-26
Lenihan Electric LLCNorth Stonington2026-06-28
Lennox National Account Services, LLCEast Windsor2011-05-19
Levco Tech INCTrumbull2006-02-01
Lewis ElectricNorth Grosvenordale2021-01-19
LF Electric LLCWatertown2025-06-04
Liberty Auto & Electric Company, Inc.Bridgeport2006-02-01
Liberty P & H LLCGreenwich2007-01-24
Liberty Plumbing, LLCEllington2018-09-12
Lifeway Mobility Freedom Lifts LLCDanielson2014-04-16
Lighthouse Electric, LLCOld Saybrook2025-02-10
Lighthouse Enterprises, Inc.Cromwell2006-02-01
Lighthouse Heating & Cooling, LLCNorwalk2022-10-24
Lighting Services IncWaterbury2006-02-01
Lightyear Electric & Remodel LLCBridgeport2025-05-13
Limitless Electric LLCWindsor2025-10-30
Lindell Fuels, Inc.Canaan2006-02-01
Lindsey's House Early Learning CenterStratford2026-09-27
Line ManufacturingWolcott2026-06-15
Link Mechanical Services, INC.New Britain2006-02-01
Litchfield Hills Plumbing, LLCNew Milford2012-09-04
LMH Electric LLCBurlington2025-02-23
Long Hill Energy, LLCClinton2019-09-24
Longo Electric, Inc.Stratford2006-02-01
Loureiro Engineering Associates, Inc.Plainville2023-09-04
Lovett Heating and Cooling LLCBroad Brook2025-09-07
LPS Lawson Power SourceHartford2022-12-11
Lucci Electric Inc.Wilton2006-02-01
Lucibello Electric Co., INC.Wallingford2006-02-01
Luginbuhl Plumbing & ServicesTolland2023-09-04
LULAC Head Start Inc.New Haven2025-05-28
Luminous Environments, LLCDurham2006-02-01
Lupo Electric, LLCWatertown2008-08-19
Lutrus Electric, LLCBrookfield2024-01-03
Luxe Beauty LoungeMiddletown2025-07-17
LV Electric, LLCWoodbury2017-05-25
Lyman Products CorporationMiddletown2026-07-22
Lynx Systems LLCSouthington2017-11-15
Lyons Tool & Die CompanyMeriden2007-10-14
M & K Plumbing Solutions, LLCEast Hartford2019-01-30
M & M Heating & Cooling, LLCBridgeport2018-09-12
M & O CorporationBridgeport2006-02-01
M & R Mechanical Services, LLCMilford2006-02-01
M & S Electric, LLCAnsonia2016-04-24
M. Adorno, LLCWestbrook2024-04-14
M.a.r.s. Electric, LLCBethel2006-02-01
M.J. Emonds Mechanical ContractorsGlastonbury2006-02-01
M.J. Fahy & Sons, Inc.Waterbury2006-02-01
Mac 4 Plumbing, LLCNorth Branford2023-04-04
MAC Coms, LLCGreenwich2026-06-14
Mac Electric, LLCCoventry2016-09-05
MAC Mechanical Services LLCVoluntown2025-07-08
MAC Plumbing Service, LLCMonroe2006-02-01
Macary's Plumbing ServicesThomaston2024-05-12
Mace Company LLCPlainville2006-02-01
Machnik Bros INCOld Lyme2007-05-06
Macri Associates Inc.Avon2006-02-01
MacVane Electrical Services, LLCManchester2023-07-23
MAD Solutions, LLCSeymour2006-02-01
Main Enterprises Inc.Stratford2006-02-01
Mainline Electric LLCWindham2025-09-28
Majestic Electric Co.Niantic2006-02-01
Making Power Moves, LLCBristol2024-04-15
Malin and Sons, LLCMilford2019-04-09
Mammoth Security, Inc.New Britain2019-08-21
Manafort Brothers INC.Plainville2010-11-17
Manchester HospitalManchester2021-10-13
Mangione Plumbing & Heating, LLCWinsted2006-02-01
Mansfield Discovery DepotMansfield2025-05-29
Manufacturers Service Co. Inc.Woodbridge2023-09-06
Maple Valley Electric, LLCWoodbury2023-05-11
Marbledale Plumbing & Heating, LLCMarbledale2014-03-02
Marc's Plumbing LLCStafford Springs2024-12-23
Marchese Electric LLCWilton2007-07-01
Marcom Communications, INC.Enfield2006-02-01
Marino Mechanical, INC.Branford2006-02-01
Mario's Electrical Technologies LLCStratford2023-04-17
Marion Manufacturing Co.Cheshire2012-01-02
Mark D. Anderson PlumbingBethel2006-02-01
Markel ElectricHarwinton2022-07-05
Marlborough Heating & Air Conditioning, LLCLebanon2015-04-22
Marzano Plumbing & Heating LLCHartford2006-02-01
Masotti Electric LLCSouthington2006-02-01
Massimo Heating & CoolingWaterbury2020-06-21
Master Plumbing & Drain CleaningStratford2023-04-17
Mattern Construction INC.Baltic2021-05-09
Maulucci Electric, LLCCoventry2018-03-13
Maus & Son, Inc.Moodus2006-02-01
Maxum Irrigation Group, LLCWaterford2017-04-18
Maynard Electric LLCLisbon2006-02-01
MB Plumbing LLCSouthington2025-09-09
MC Electrical Contracting, LLCPlainville2019-10-03
Mccann Systems, LLCWallingford2018-10-28
McCarthy Heating Oil Service Inc.Quaker Hill2006-02-01
Mcclure Mechanical Services LLCBaltic2026-04-23
McCormack ElectricRoxbury2024-07-22
Mcguire Plumbing & HeatingVoluntown2006-02-01
McLain Electric Co. Inc.Newington2006-02-01
MCM Plumbing LLCHartford2021-04-14
McMellon J. Oross, LLCStratford2015-02-08
McMillan Electric, LLCTerryville2023-01-29
MCN Telecom LLCNorwalk2014-04-03
McNelly Electric, LLCNewington2011-09-13
Md Electrical Construction INC.Granby2024-06-02
MD Mechanical Services, LLCWethersfield2013-12-11
Mecca Electric of RyeGreenwich2021-10-31
Mechanical Heating & Air Conditioning, Inc.New Haven2019-04-24
Mechanical Plumbing & Heating, INC.Hamden2006-02-01
Mennillo Plumbing, LLCFairfield2015-08-09
Mercury Cabling Systems, LLCStratford2006-02-01
Metro Construction, LLCFarmington2014-01-05
Metro North RRStamford2024-03-03
MGT Electrical Services, Inc.Watertown2022-12-27
Michael Burruano Plumbing & HeatingAmston2023-01-31
Michael C. Weigold, Inc.Greenwich2006-02-01
Michael Sheehy Plumbing & Heating, LLCYalesville2006-02-01
Michael Tobin Plumbing LLCSandy Hook2015-10-26
Michaud Electric, INC.Bristol2006-02-01
Micon DevelopmentHartford2014-10-23
Micro Precision, LLCSouth Windham2016-08-22
Mid-State Mechanical ContractorsMiddletown2006-02-01
Middlebury Consignment LLC dba Take 5 StudioMiddlebury2024-03-04
Midstate Site Development, LLCBloomfield2008-11-03
Miele Electric/Power II LLCWaterbury2007-05-13
Mih System Group, LLCCheshire2024-09-23
Mike Alleano Plumbing ServicesGranby2007-03-14
Mike O'Connell Electric, LLCSouthbury2018-02-06
Mike Swaney Electric, LLCOld Lyme2007-04-25
Mike's Plumbing ServicesBridgeport2014-09-09
Miles ElectricSomers2006-02-01
Millas Heating & Cooling, LLCMystic2016-07-27
Milro GroupDanbury2021-09-29
Minuteman Security & Life SafetyBolton2006-02-01
Minutemen Plumbing & Heating, LLCTorrington2017-01-08
Mirabito EnergyPortland2015-03-23
Mirabito Energy ProductsSeymour2025-03-11
Mitchell Fuel Co., Inc.South Windsor2006-02-01
Mizzy Construction, Inc.Plainville2006-02-01
MJM Electric LLCThomaston2006-02-01
MJS Mechanical Services LLCGuilford2025-07-17
Modelcraft Company, Inc.Plymouth2007-06-27
Modern Electric, LLCPlainville2024-02-05
Modern Heating and Air ConditioningMilford2012-12-02
Modern Mechanical Systems Inc.Farmington2006-02-01
Modugno Electrical Contractors INC.East Hartford2006-07-27
Mohawk Northeast, Inc.Plantsville2018-03-04
Mojo Hair Salon LLC.Newington2025-06-05
Mom and Pop Plumbing & Drain Services, LLCDanielson2018-02-26
Momentum Solar, LLCEast Berlin2019-09-17
Monahan Plumbing IncWaterford2025-05-04
Montanari Fuel Service, Inc.Ridgefield2006-02-01
Montessori School on EdgewoodNew Haven2025-08-11
Moreira Electric, LLCNew Fairfield2016-09-12
Morning Glory Infant Toddler CenterNew Haven2025-06-15
Mosman Well Works, LLCWoodbury2023-10-03
Mountain Home ElectricCanton2022-06-30
Mountain side mechanical llcMeriden2026-06-29
MR Heating & Cooling, LLCHarwington2022-12-11
MS Plumbing Solutions, LLC.Rocky Hill2013-04-02
MTD Electrical Services, LLCCenterbrook2016-07-27
MTL Heating and CoolingWest Haven2026-04-01
MTM CorporationAndover2025-09-02
Muir Electric, Inc.Haddam2006-02-01
Munro Plumbing & Heating, LLCMadison2023-07-02
Murace Plumbing Co., INC.Stamford2006-02-01
Murgo Mechanical, LLCEast Haven2025-09-21
MVP Plumbing and Heating, LLCTrumbull2021-07-13
My Plumber CT, LLCMiddletown2023-01-31
My-Tech Mechanical Contractors, LLCAndover2017-03-23
Mystic Electric, LLCStonington2006-02-01
N & J Plumbing LLCBerlin2020-09-20
N & S Electric, Inc.Stratford2006-02-01
Nadeau Electric, LLCCanton2021-02-01
Narowski Plumbing LLCSeymour2025-12-10
Nassif Inc.Danbury2026-04-06
Nation Electrical Contracting LLCStratford2006-02-01
Nationwide Mechanical Inc.Harwinton2006-02-01
Nationwide Security CorporationBranford2006-02-01
Nature's Campsites, LLCVoluntown2023-10-25
Naugatuck Window and Glass LLCNaugatuck2006-02-01
Neals Precision PlumbingMilford2025-09-08
NEC Group, LLCBloomfield2014-05-22
Neca & Ibew Local 90 JatcWallingford2006-02-01
Nero Air Conditioning Heating & RefrigerationNorth Haven2006-02-01
Network Electric & Security Systems, LLCNorth Haven2006-02-01
Network Installation Services, Inc.Wallingford2006-02-01
Network Interiors, INC.Plainville2006-02-01
Neves Plumbing Service, LLCDanbury2006-02-01
New England ElectricDanbury2006-02-01
New England Electrical Contracting, Inc.Newtown2013-11-18
New England Energy Controls, INC.East Haddam2008-07-08
New England Glass & Mirror Co.Norwich2006-02-01
New England Irrigation, INC.Rocky Hill2025-01-30
New England LightingNew Fairfield2024-01-03
New England Mechanical Services INC.South Windsor2006-02-01
New England Officiating Services & Dev. LLCBloomfield2024-12-02
New England Oil Co. Inc.Greenwich2006-02-01
New England Service & Controls LLCMoosup2006-02-01
New Heights BarbershopHamden2024-09-15
New London County Septic Service Inc.Ledyard2021-08-09
New London Public SchoolsNew London2023-05-30
New Style Hair StudioMiddletown2022-04-13
Newcomb Spring Corp.Southington2020-03-09
Newington Electric Co., Inc.Newington2006-02-01
Nexgen Electric LLCSeymour2025-03-02
Niantic Plumbing & Appliance Co., Inc.Niantic2006-02-01
Nichols & Son Electric, LLCLebanon2006-02-01
Niles Electrical LLCWindsor2025-11-23
Nitzan Nursery School/Congregation BethElNorwalk2026-03-23
Njc Electric, LLCShelton2023-07-02
No Limit ConstructionHarwinton2023-05-02
Noah's Electrical Solutions LLCTerryville2026-09-15
Noank Electric Electrical Contractors LLCLedyard2013-10-01
Noho Zephyr Northeast LLCGlastonbury2006-02-01
Nolco PlumbingWethersfield2014-07-29
Norbert E. Mitchell Co., Inc.Danbury2006-02-01
Nordex, Inc.Brookfield2025-10-28
North Air Systems, LLCNorthford2006-02-01
North Atlantic States Carpenters Training FundWallingford2006-02-01
North East IrrigationOld Saybrook2007-04-25
North Electrical, LLCPlainville2023-09-13
Northeast Comfort SolutionsSterling2022-12-27
Northeast Dist. Roofers/Waterproofers LU#9Rocky Hill2006-02-01
Northeast Generator of Connecticut, Inc.Bridgeport2022-03-20
Northeast Heating & CoolingBethany2025-11-23
Northeast HVAC Design LLCFalls Village2025-08-10
Northeast Protection Partners, INC.Manchester2006-02-01
Northeastern Communications & Electrical, LLCMiddlefield2006-02-01
NorthEastern Sheet Metal Co., Inc.Enfield2008-01-08
Northern Comfort Mechanical, LLCDanbury2021-08-08
Northern Lights Electric Inc.Newtown2006-02-01
Northern Lights Electrical, LLCBolton2006-02-01
Northern Plumbing & HeatingEast Norwalk2006-02-01
Northstar Service LLCSouthington2010-08-30
Notchick And Sons Electric, LLCNorth Brandford2023-08-14
Noujaim Tool Co., INC.Waterbury2006-02-01
Novick Mechanical LLCGriswold2026-05-14
Novo Precision, LLCBristol2015-12-21
NPower Construction & Electrical, LLCEast Haven2016-12-19
Nunes Quality Plumbing & HeatingWindsor2006-02-01
Nutmeg Electrical Services LLCLebanon2025-02-23
Nutmeg Mechanical Services, INC.Manchester2006-02-01
Nutmeg Plumbing & HeatingEast Hampton2014-09-28
Nuzzo Electrical Contractors, Inc.Bridgeport2006-02-01
O'Connell's Electrical ContractorsWindham, Connecticut2026-05-11
O'Connor Electric LLCMilford2026-06-14
O'Reilly Electric, LLCStratford2012-07-17
O.J. Mann Electric Services, Inc.Cheshire2006-02-01
Oakbrook Electric, LLCBristol2016-10-25
Odyssey Early Learning CenterNorwalk2026-06-07
Odyssey Learning Inc.Norwalk2025-05-27
Ogden Electrical Service Inc.Danbury2006-02-01
OGS Technologies LLCCheshire2026-05-06
Old Saybrook Plumbing LLCWaterford2015-09-14
Oliver Electric LLCWaterford2025-10-09
Omega Plumbing & Heating, LLCNorwalk2009-03-18
Omni Mechanical Services, LLCSouth Windsor2018-10-14
On-time Plumbng and Heatiing, LLCBristol2025-03-31
One Source Electric LLCStratford2024-12-16
Onion ElectricAvon2006-02-01
Onlehane, LLCSouth Windsor2024-08-12
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Operating Engineers of Conn JATC 478Meriden2006-02-01
Opticom, Inc.Portland2006-02-01
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P & M Electric, LLCMarlborough2006-03-14
P & S Holdings, LLCStamford2017-08-27
P.C.S. Plumbing & Heating, LLCSeymour2026-07-07
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Palladin Precision Products, Inc.Waterbury2017-08-08
Pallas Electric, LLCLebanon2014-03-02
Papst Plumbing & Heating LLCOxford2006-02-01
Paquette Electric Co., INC.Pomfret Center2007-06-11
Paraco HVACWest Haven2023-08-22
Paradise Electric, LLCOxford2009-10-14
Paragon MedicalBridgeport2010-11-23
Park City Boilers Plumbing & Heating, LLCMilford2006-03-27
Parker Hannifin Corp.North Haven2006-02-01
Partyka Electric, LLCSandy Hook,CT2006-02-01
Pasqualini Construction, Inc.Old Lyme2006-03-13
Pasquariello Electric Corp.Madison2006-02-01
Pastanch, LLCNaugatuck2024-09-09
Patnode ElectricWillington2006-02-01
Patriot Electric, LLCBethlehem2006-02-01
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Pautipaug Electric LLCBaltic2006-02-01
Pax ElectricHamden2025-12-18
Payless Auto GlassHartford2006-02-01
PDR Plumbing & Heating, LLCWolcott2009-11-23
PE Electric LLCCheshire2009-09-17
Pearmain CommunicationsShelton2023-04-04
PEC ElectricalEast Hartford2026-05-13
Peck Electrical Contracting ServicesMonroe2022-10-06
Pelo By EdgardoRidgefield2024-03-10
Pember Plumbing and Heating, LLCClinton2021-01-21
PennyWise Oil Company, Inc.Westbrook2006-10-29
Peragallo ConstructionCheshire2025-03-09
Perfect Timing Heating & CoolingThomaston2006-02-01
Perfectemp, Inc.Plainville2006-02-01
Perfectly Plumb LLCColchester2006-09-28
Perry Plumbing Services, LLCSeymour2006-02-27
Perry Technology CorporationNew Hartford2017-10-09
Personal Energy Co LLCNew Britain2014-08-13
Peter Kupchick Heating & Cooling INC.Fairfield2007-02-12
Peter Paul Electronics Co., IncNew Britain2024-12-16
Peters Mechanical, LLCChester2024-09-24
Petersen Electrical ContractorsEast Berlin2008-07-28
Petro Home ServicesNorth Haven2006-02-01
Petroleum Services, Inc.Plantsville2019-09-09
PFE Electric Corp.Danbury2007-01-02
Phil's Irrigation IncLakeville2026-04-06
Phoenix Manufacturing, Inc.Enfield2015-12-10
Phoenix Mechanical HVAC LLCDarien2026-02-02
Phyllis Bodel Childcare Center at Yale School of Medicine, Inc.New Haven2026-03-09
Pierce Builders, Inc.Granby2017-03-06
Pineridge PlumbingNaugatuck2025-02-03
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Pioneer Automated Systems PLLCMeriden2025-04-20
Pipe Works Plumbing & Heating, LLCBristol2022-08-01
Pizzitola Electric Co.Plainville2006-02-01
PJ Electric, Inc.Oakville2006-02-01
PK Electric LLCEast Windsor2025-07-30
Plainville Machine & Tool Co., Inc.Bristol2023-02-21
Plastic Assembly Systems, LLCBethany2007-07-23
Plumb Co., LLCGlastonbury2024-08-05
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Plumbums, LLCBerlin2024-05-23
Plymouth Glass & Mirror, Inc.Thomaston2010-01-19
Plymouth Oil Service Inc.Plymouth2006-02-01
Plymouth Spring Co., Inc.Bristol2018-03-01
PMC-STC, Inc.Danbury2022-02-22
Polo Plumbing & Heating, LLCMadison2016-11-30
Polytec Electrical Contractors, LLCNew Milford2006-02-01
Positively Electric Plus , LLCWeston2006-02-01
Possidento Therrien Electrical Contrs., LLCPlainville2008-07-30
Potter's Oil Service, Inc.North Windham2006-02-01
Power Design Electric, LLCFairfield2020-10-14
Power Forward, LLCMilford2019-08-05
Power Plus Electric & Communications, LLCWest Haven2022-05-02
Power Pros Electrical Services, LLCWallingford2022-09-27
Power Shield, LLCBristol2024-04-14
Power Systems Electrical Contractors, LLCFarmington2006-02-01
Power Unlimited Inc.Avon2006-02-01
Power-On Electric, LLCEnfield2025-03-30
Powerhouse Electric CTNorwalk2025-10-27
Powersmart Electric, LLCWest Haven2023-10-25
Powertech Electric LLCProspect2026-04-09
Precise Barber Shop, LLCNew Britain2021-04-04
Precise HVAC Home Services LLCBristol2024-12-05
Precision Plastic Products, Inc.Portland2020-03-09
Precision Plumbing CT, LLCSouthbury2014-10-14
Precision Resource IncorporatedShelton2006-02-01
Precision SensorsMilford2018-05-03
Preferred Air Systems, Inc.Brookfield2006-02-01
Preferred CNC LLCWatertown2026-04-15
Preferred Electric, LLCBerlin2006-02-01
Preferred Plumbing & Drain Services LLCEast Haven2006-02-01
Preferred Utilities Manufacturing CompanyDanbury2016-05-24
Premier Group, LLCWallingford2019-12-15
Premium Northeast Plumbing LLCMorris2026-05-13
Prime Electric LLCNorwich2006-02-01
Priority Electric, Inc.Berlin2006-02-01
Priority Electrical InfrastructuresAnsonia2022-09-11
Priority SolarCheshire2025-10-01
Pro PlumbingGales Ferry2006-02-01
Pro-7 Fire Protection, LLCEast Hartford2019-03-17
Pro-electric INC.Bethlehem2006-02-01
Professional Water Systems, Inc.Ridgefield2024-04-14
Proficient Electric LLCDarien2006-02-01
ProFlow Plumbing & Heating LLCHarwinton2026-04-14
Progressive Sheet Metal, LLCSouth Windsor2006-02-01
Projects, Inc.Glastonbury2022-08-14
Pronto Plumbing & Heating Inc.Bethel2006-02-01
Proservice HVAC & PlumbingSouthington2024-04-29
Protect America CorporationWaterbury2006-02-01
Prysmian GroupWillimantic2006-02-01
PSC Mechanical, LLCBristol2006-02-01
Pure Power Electric, LLCProspect2010-11-04
Pure Water PlumbingMoodus2026-02-17
Putnam Plastics CorporationDayville2016-10-06
Pye-barker Fire & SafetyMiddletown2007-08-15
Pye-barker Fire & Safety, LLCBrookfield2006-02-01
QC Electric, LLCNorth Haven2019-04-25
QE Solar Electrical Services, LLCWindsor Locks2023-08-22
Quality Engineering Services, Inc.Wallingford2007-08-28
Quality Heating & Cooling LLCEast Windsor2007-08-14
Quality Mechanical CorporationEast Haven2006-02-14
Quality PropaneClinton2006-11-16
Quiet Corners Mechanical Services, LLCNorth Windham2016-05-19
Quinn Plumbing & Heating, LLCNorth Haven2006-02-01
Quinoco, Inc.Westport2006-10-16
R & B Refrigeration, Inc.Guilford2006-02-01
R & C Electric, LLCBristol2006-02-01
R & M Sitework, LLCStratford2024-11-20
R & R Mechanical ServicesMilford2006-02-01
R & W Heating Energy Solutions LLCSalem2006-02-01
R. Foley Electric, LLCNorth Canaan2022-08-30
R. Pelton Builders, INC.East Berlin2013-01-14
R. Piro Electric, LLCStratford2016-04-12
R. Ross Mechanical INC.Terryville2006-02-01
R.A. Levine CompanyNorth Haven2006-02-01
R.A.C. ElectricWolcott2020-08-20
R.B. Kent & Son, Inc.Groton2006-02-01
R.C. Bigelow, Inc.Fairfield2021-09-09
R.D. Scinto, Inc.Shelton2025-03-30
R.E. Godwin & Sons LLCCenterbrook2026-02-26
R.M. Harris Electrical Contractors, Inc.Cos Cob2006-02-01
R11 Electrical Solutions LLCNew London2023-07-16
Ralph D. Russo Plumbing & HeatingStamford2006-02-01
Ralph Mann & Sons, Inc.Ansonia2006-02-01
Rand-whitney Containerboard, LpMontville2023-09-11
Ranger Electric ServiceStamford2006-02-01
Rapid Service LLCColumbia2006-02-01
Raps Plumbing & Heating, Inc.Milford2006-02-01
Ravex Systems, Inc.Farmington2016-09-05
Ray Brown Electric, LLCStratford2013-05-09
Ray McGowan & Sons Plumbing & Heating, LLCDarien2007-09-19
Ray Page Plumbing IncorporatedVernon2012-04-23
Ray's Air Systems, LLCWest Haven2023-09-13
Rayzor Electric, LLCMilford2024-05-12
RBC Aircraft Products, Inc.Torrington2014-02-09
Rebelo Electric, LLCWaterbury2026-04-22
Red Balloon Day Care Center IncStafford Springs2026-01-27
Red ThreadEast Hartford2006-02-01
Reed Mechanical Solutions, LLCSouthington2016-10-06
Regional School Dist #17 Haddam-killingworthHigganum2021-11-03
Reilly MechanicalShelton2026-03-18
Reliable ElectricMiddlebury2024-07-08
Reliable Oil & Heat Co. Inc.Stamford2006-02-01
Reliable Refrigeration Plus, INC.Hamden2007-02-06
Renshaw Plumbing, Heating & Cooling, LLCNew London2022-02-01
Reutter Mechanical, LLCEllington2023-07-23
Rhenium Salon and SpaSimsbury2025-11-09
Rhodes Pump Service, LLCGuilford2012-02-05
Rich's Plumbing, Heating & A/CEnfield2006-02-01
Richard Electric Inc.Putnam2006-02-01
Richard's Machine Tool Co., INC.Newington2017-05-25
Richards CorporationTerryville2012-02-05
Rick's Plumbing Service, Inc.Milford2006-02-01
Rick's Pump & Water Service, LLCRedding2016-04-13
Ridgefield Electric, LLCRidgefield2022-12-11
Ridgefield Plumbing & Heating, LLCRidgefield2008-02-20
Riley's Heating ServiceNorth Stonington2006-02-01
Ritchie Mechanical Services, LLCSouth Windsor2017-08-27
River Electric LLCLisbon, CT2025-07-10
Rli Electric, LLCDurham2006-11-14
RnB Enterprises, Inc.Oxford2012-10-30
Ro's Plumbing LLCEast Hartford2023-02-28
Rob Rozz LLCSandy Hook2015-10-19
Robert Giusti Plumbing & HeatingWaterford2025-12-17
Robert J. Boucher Jr. Plumbing & Heating, LLCStamford2021-06-08
Robert Rozmus Plumbing & Heating, Inc.Riverside2006-02-01
Roger Crampton, LLCOld Lyme2006-04-16
Roger Electric, Inc.Danbury2006-02-01
Rogers Heating & Air ConditioningEnfield2026-02-23
Roman Oil Company Inc.Meriden2006-02-01
Romco Contractors, Inc.Bloomfield2006-02-01
Ron Rich Jr. Plumbing & Heating, LLCShelton2015-03-25
Ronald E. Carpenter, Electrical ContractorCanaan2009-04-14
Ronald Morelli LLC DBA Romeo Morelli & SonsDanbury2012-03-29
Rooterman Hartford LLCNewington2021-03-04
Ross Mechanical Contractors, LLCNew Britain2009-01-28
Rotha Contracting Company, INC.Avon2026-01-13
Roto-Rooter Services CompanyStratford2006-02-01
Rousseau Plumbing & Heating LLCNorth Haven2006-02-01
Rowayton Fuel & Oil Company, Inc.Rowayton2007-09-26
Rowley Spring & Stamping Corp.Bristol2014-07-28
RT Pro Plumbing, LLCManchester2023-12-25
RTX Technology Research CenterEast Hartford2024-11-20
Ruby Glass Co. Inc.New London2013-04-14
Rural Energy, LLCWestport2017-02-02
Rush Air Mechanical ServicesNorth Granby2025-03-16
Russell Electric, LLCMorris2021-11-03
Rutkowski Paint & Hardware Co., INC.New Britain2006-02-01
RVOS, Inc.Middletown2011-08-02
RW Electric, LLCOxford2016-11-30
RWA Well Services, LLCNew Haven2006-02-01
Ryan F. Murphy Heating & Cooling, LLCNew Milford2019-09-10
Ryan Perlowsky Electric, LLCNew Milford2018-08-09
S & P Electric, LLCPlymouth2018-07-17
S & S Centerless Grinding Inc.Bloomfield2023-12-03
S&G Electrical, LLCWolcott2023-01-16
S. Marcinczyk Electric, LLCSeymour2016-09-22
S.D.R. Plumbing and Heating, Inc.Riverside2006-02-01
Sabanski Plumbing & Heating, LLCStamford2017-08-28
Safe and Sound Electric, LLCOld Greenwich2016-02-29
Safelite Auto GlassStratford2007-09-05
Sail Energy, LLCWinsted2006-11-02
Saje Aerospace INCBloomfield2025-12-16
Sal Mangione & Sons Construction, Inc.Seymour2014-05-22
Sal Sabia Electrical Contractors, INC.Stamford2006-02-01
Salafia Electric, LLCMiddletown2006-02-01
Sally Patrick Moynihan Plumbing Co., LLCWest Hartford Ct2006-02-01
Salon Space, LLCNorth Haven2024-09-15
Salvatore Plumbing LLCDanbury2006-02-01
Salvioli ElectricFairfield2016-11-30
Sampson Electric, LLCNorth Branford2014-05-28
Sanaco INC. Dba Hometown HeatingBrooklyn2006-02-01
Sanders Electric LLCWaterford2013-10-21
Santabono, Inc.Wethersfield2006-02-01
Santella Electric Inc.New Canaan2006-02-01
Santilli Fuel LLCShelton2013-02-26
Santor Electrical Contractors, LLCNorth Windham2014-05-12
Santoro's Plumbing & Well ServiceProspect2006-02-01
Sargeant Electric Co LLCGreenwich2006-02-01
Sargent Manufacturing CompanyNew Haven2018-10-28
Sarracco Mechanical Services, Inc.Waterbury2006-02-01
Saucier Mechanical Services, INC.Plantsville2006-02-01
Sav-mor Cooling & Heating, INC.Southington2006-02-01
Savkat, INCBristol2020-12-23
Scat CorpGuilford2025-01-13
Schaeffler Group USA, INC.Danbury2006-02-01
Schick Manufacturing, INC.Milford2006-02-01
Schmidt Electric, LLCNaugatuck2006-02-01
Schomber Electric, LLCNew Milford2006-02-01
Schultz CorporationTerryville2024-11-20
Scissors Society INC.Hartford2023-10-04
Sdc Electrical Service LLCHamden2026-02-09
Security 101 HoldingsSouthington2014-05-12
Security Solutions INC.Norwalk2006-09-07
Select Mechanical Services, INC.Southington2014-10-23
Servco Oil Inc.Wilton2006-02-01
Service Relief, LLCManchester2021-07-18
Service Stars, Inc.Danbury2016-05-19
Service Station EquipmentNorth Franklin2011-11-22
Setpoint Refrigeration LLCFarmington2025-05-27
Shaffer Beacon Mechanical LLCGranby2021-12-12
Shannon Irrigation and Landscape Lighting LLCStratford2009-07-12
Sharon Electric Company LLCSalisbury2006-02-01
Sharp Image BarbershopJewett City2023-01-22
Sharp mechanicalMeriden2026-01-19
Shea's Electrical, Inc.Tolland2006-02-01
Sheet Metal Workers Local Union #40 JATCRocky Hill2006-02-01
Shippee ElectricThompson2025-01-22
Shock Electrical Contractors, Inc.Danbury2006-02-01
Shockwave ElectricEast hampton2026-02-05
Shoreline Electrical Contracting, LLCEast Haven2012-07-17
Shoreline Glass & Aluminum, LLCBranford2025-03-30
Shoreline Plumbing & Heating LLCClinton2015-10-19
Siddall Heating & Cooling By DesignWarren2007-01-11
Siemens Industry, Inc.Cromwell2006-02-01
Sila ServicesWilton2022-12-11
Silent Watchman Security ServicesBethel2007-09-03
Silverio Mechanical, LLCOld Saybrook2006-02-01
Simmons HVACPawcatuck2025-08-06
Simon Electric, LLCOxford2018-01-15
Sippin Energy ProductsMonroe2006-02-01
Sirois Tool Co. Inc.Berlin2012-07-17
SK Mechanical LLCManchester2009-12-20
Skalp Kings Barber LoungeTerryville2019-06-19
Sked Electric, LLCOld Lyme2010-02-01
Skillcraft Machine Tool Co., Inc.South Windsor2017-01-08
Skull and Combs Company LLCNew Haven2025-03-09
Sky Electric, LLCFarmington2019-03-18
Skyline Solar, LLCWallingford2014-05-22
Sloss Electrical Contracting LLCProspect2006-02-01
SM Mechanical Services, LLCGlastonbury2017-02-14
Smart Connections, LLCStorrs2023-03-14
Smart Electrical Solutions, LLCTrumbull2021-03-28
Smart Thermal Solutions LLCPawcatuck2012-01-09
Smartcut, LLCBridgeport2024-08-27
SMR Heating & CoolingBolton2025-09-08
SNS Electric LLCStonington2006-02-01
Soco Electric LLCMoodus2026-08-05
Soda Service & Alpine RefrigerationNewington2006-02-01
Solarize Home Energy, LLCWaterbury2022-12-27
Solid Technology, LLCShelton2024-04-28
Sonitek CorporationMilford2008-07-02
SONITROL / Alarm New England LLCRocky Hill2008-05-26
Sonitrol Security Systems of BridgeportStratford2006-02-01
Sound Energy CorporationDarien2012-01-19
Soundworks & Security LLCTorrington2006-02-01
South 7 Electric, LLCKent2016-03-15
South Shore Heating & Cooling, Inc.Pawcatuck2011-11-13
Southbury Electrical Contractors, LLCSouthbury2006-02-01
Southeast Electric, LLCMystic2006-02-01
Southern District Roofers Jatc Local 12North Haven2006-02-01
Southington Tool & Manufacturing Corp.Plantsville2006-02-01
Southwest Mold, Inc., dba APTYXTorrington2007-08-08
Spargo Plumbing & Heating, Inc.Burlington2006-02-01
Speirs Plumbing, Inc.Old Lyme2006-02-01
Spence Well DrillingGranby2024-03-14
Spicer Plus, Inc.Groton2017-12-04
Sprague Heating and CoolingSprague2025-04-16
Spring Brook Service, Inc.New Britain2006-02-01
SPS Plumbing, Heating & Drain, LLCCromwell2021-11-03
SPW Electric, LLCCoventry2019-04-07
SRS Petroleum ServicesBloomfield2016-07-27
Sssh3, INC.Rocky Hill2006-10-10
Stafford Mechanical Services,Stafford Springs2006-02-01
Stahl Electrical Services, LLCSeymour2017-09-06
STAK’D Mechanical LLCPlainfield2025-07-02
Standard Oil of CTBridgeport2006-02-01
Stanley Wiesen, Inc.Hartford2006-02-01
Starcom SystemsHuntington2006-02-01
Starr Electric, LLCNorth Windham2025-04-30
State Line OilGranby2006-02-01
State-Wide Electric, Inc.Glastonbury2006-02-01
Stelray Plastic Products, Inc.Ansonia2014-07-28
Stephen's HVAC, Inc.Bridgeport2006-02-01
Sterling Security Systems, Inc.Waterbury2006-04-10
Steve's Electrical ContractingNaugatuck2006-02-01
Stevens Company, Inc.Thomaston2006-12-06
Steves plumbing llcOrange2025-09-08
Stewart Efi Ct, LLCThomaston2006-02-01
Stratford Electric Services LLC. DeleteStratford2025-10-06
Stratford Electric Services, LLCStratford2024-08-15
Stratford Plumbing & Heating Inc.Southbury2006-02-01
Strathmoor Electric, Inc.Stratford2006-02-01
Straton Industries, Inc.Stratford2006-02-01
Stuart L. White Co.Milford2006-02-01
Stula Enterprises, LLCNorwich2019-09-17
Suburban Service Company, LLCNorthford2010-09-01
Summit Electrical and CommunicationTrumbull2009-08-25
Summit Fire & SecurityMiddletown2025-07-02
Sunburst Plumbing & Heating Inc.Ridgefield2006-02-01
Sunderland Electric LLCNew Haven2006-02-01
Sunlight Electric, LLCSouthport2024-02-05
Sunrun Installation Services, Inc.Rocky Hill2015-12-30
Sunset Valley Construction, LLCEllington2024-07-22
Super K Electric LLCStamford2006-02-01
Superior Comfort Heating & Air ConditioningAnsonia2009-09-09
Superior Electric, LLCNewington2021-04-04
Superior Heating & Cooling, Inc.Berlin2006-09-04
Superior Sewer & Drain ServiceMystic2026-07-12
Superior Water & Radon Systems, LLCSeymour2020-12-17
Swan Associates, Inc.Newington2006-02-01
Swanson Electric LLCLitchfield2025-09-02
Sweeney ExcavationHamden2026-03-29
Sweetman ElectricEnfield2023-09-04
Synergy Electrical SystemsPlainville2014-07-08
Synergy Electrical Systems, LLCPlainville2006-02-01
Systematic Automation Inc.Farmington2021-08-09
Systemone, LLCSouthington2012-07-17
T & H Electric, Inc.South Windsor2006-02-01
T & S Electric LLCCentral Village2012-11-12
T & T Electrical Contractors, INC.Hartford2006-02-01
T. Jermine & Son's Inc.North Haven2006-02-01
T.A.P. Plumbing & Heating, LLCBristol2022-10-31
T.C.'s Plumbing & Heating LLCOrange2006-02-01
T.P.L. Electric, LLCWest Haven2022-12-27
Tabacco & Son Builders INCBristol2026-05-20
Tankfarm Logistics INC.Bristol2025-03-02
Tarala Electric Group, LLCNorwalk2018-06-13
Taylor Electric, LLCHartford2010-09-13
TD Electric, LLCWolcott2023-08-28
Team Mechanical LLCEast Hartford2006-02-01
Ted's Plumbing & Heating, Inc.West Hartford2006-02-01
Teleworks Communications, INC.Glastonbury2025-04-16
Temp Air Co., Inc.Stamford2006-02-01
Tempered Heating and Cooling, LLCBroadBrook2024-04-14
Tesla EnergyEast Granby2012-11-12
Tewksbury Electric, LLCThompson2006-02-01
Thames Valley Fire Protection, LLCCanterbury2023-08-28
The Able Electric Co., Inc.Bloomfield2006-02-01
The ALL-GAS & Equipment CompanyHartford2026-05-05
The Arthur G. Russell Co., Inc.Bristol2006-02-01
The Carby CorporationWatertown2006-02-01
The Clog Dr, LLCAnsonia2022-10-31
The Colonial Bronze CompanyTorrington2019-09-22
The Connecticut Children’s MuseumNew Haven2025-07-21
The Curly Hair SalonNew Haven2026-07-26
The Dapper Den Barbershop, LLCRidgefield2017-08-28
The Green Machine, INC.Bloomfield2008-03-16
The Hair LoftKillingworth2026-05-11
The Main Connection of Ct LLCSouth Windsor2006-02-01
The NY-Conn Corp.Danbury2006-02-01
The Otto CompanyDanbury2006-02-01
The Plastic Forming Company, Inc.Woodbridge2024-10-24
The Quaker CorporationCheshire2022-03-31
The Seymour Oil Company, LLCSeymour2012-03-21
The Siemon CompanyWatertown2012-11-25
The Stonington Community Center, Inc.Stonington2025-06-22
The Wiring Whiz, LLCEnfield2008-02-04
Thermal Works, LLCSouthington2023-12-03
Thermo Care, LLCStamford2019-08-05
Thermodynamics Mechanical Services, Inc.BroadBrook2007-09-26
Thomas Connolly Electrical ContractorMilford2013-10-21
Thomaston Comfort Control INC.Thomaston2006-02-01
Thompson Heating & Air ConditioningRiverside2019-04-09
Thorogood Electric, LLCEnfield2014-09-08
Three-Way Communications, Inc.Windsor Locks2021-09-29
Thrive Brands, LLC DBA Teed & BrownBethel2026-01-28
Tidewater Electronics, INC.East Norwalk2006-02-01
Timothy Mahoney PlumbingNiantic2013-07-30
TineDale CorporationRocky Hill2006-02-01
Titanium Electric, LLCNorwalk2015-12-22
Tjf Electric LLCWillington2026-03-10
TLC Electric, LLCOxford2019-11-07
TLC Plumbing LLCTrumbull2006-02-01
TM Electric, LLCBristol2021-02-17
TMG Companies, LLCMystic2021-07-27
TNT Heating & Cooling, LLCColchester2024-07-08
Tom Ballaro PlumbingSeymour2006-08-23
Tom's Plumbing & HeatingGales Ferry2006-02-01
Tomas Electric, LLCNorwalk2008-03-02
Tomaszek & Sons Plumbing, Heating & Pumps, LLCEast Lyme2023-05-03
Tone Klear CommunicationOld Saybrook CT2025-08-12
Tony Morelli LLCNew Fairfield2025-09-09
Total Comfort, INC.Danbury2006-02-01
Total Electric Inc.North Branford2006-02-01
Total Mechanical Systems LLCPlainville2006-02-01
Total Plumbing & Heating INCEast Haven2006-02-01
Total RefrigerationWest Suffield2008-03-13
Tower Energy, LLCPlainville2010-10-14
Tower Laboratories, LtdCenterbrook2011-09-13
Town of StratfordStratford2025-05-20
Town Oil Company, Inc.Wethersfield2017-04-30
TP ElectricTrumbull2011-08-02
Tpc Associates INC.Milford2008-04-23
TPI Electric, LLCLedyard2018-11-28
Trade Twins, LLCWatertown2024-04-15
Tradesmen Energy Solutions, LLCOld Lyme2006-10-29
Tradesmen of New England LLCBloomfield2006-02-01
Tradewind Irrigation, LLCBristol2015-04-22
Tradewinds Heating & Cooling, LLCBranford2024-03-06
Trane US, Inc.Rocky Hill2006-02-01
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Treys BarbershopSouthington2026-05-13
Tri Phase Contractors, LLCNorth Haven2006-02-01
Tri Star Service Inc.Woodbury2006-02-01
Tri State Power, LLCNorth Grosvenordale2025-08-19
Tri Tech Mechanical, LLCStamford2010-07-27
Tri-City Heating & Cooling, LLCMilford2006-02-01
Tri-County Electric, LLCDanbury2014-10-14
Tri-state Contracting, LLCManchester2022-10-17
Trinity Solar, Inc.Cheshire2014-07-28
Troy Security SystemsNewtown2024-04-15
Tru-Precision CorporationFarmington2018-12-27
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Trudeau Electric LLCNorth Grosvenordale2021-02-24
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Tuckson Electric, LLCSimsbury2024-03-13
Turner Electric LLCSouthington2010-08-09
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Turri-Masterson, IncTorrington2006-02-01
Tuthill Electric, LLCEast Glastonbury2022-10-06
Tuxis - Ohr's Fuel, Inc.Meriden2006-02-01
Twin Electric LLCMilford2008-09-03
TXI Custom InnovationsSouth Windsor2025-11-18
Tyler Heating, A/C, Refrigeration, LLCStratford2007-08-14
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Ugo DiGrazia Air Conditioning, Inc.Hartford2009-03-11
Ultimate Heating and Cooling Mechanical LLCSomers2025-11-17
Uncasville OilUncasville2016-02-02
Unified Home Solutions, LLCStamford2026-03-23
Unitech Sound and Security Systems, LLCBerlin2006-02-01
United Aluminum CorporationNorth Haven2013-04-14
United Concrete Products Inc.Yalesville2007-09-09
United Electrical ServicesSimsbury2026-05-20
United Electrical Solutions, Inc.Meriden2021-06-08
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United Plumbers LLPWindsor2025-08-26
United Stamping Services, LLCSouthington2019-04-17
United Steel, INC.E Hartford2008-08-07
United Steel, Inc.East Hartford2008-05-01
United Tool & Die Co DBA Precision MfgWest Hartford2024-09-15
University of ConnecticutStorrs2017-12-20
Unlimited Plumbing Services, LLCCanterbury2023-07-02
Upc, LLCMeriden2024-01-28
Uppercuts Barbershop, LLCWoodstock Valley2025-03-12
Upscale Barber Shop, LLCUncasville2023-04-17
URSA Security & ControlPlantsville2022-12-27
US Coast Guard AcademyNew London2006-02-01
Utility Communications, Inc.Hamden2016-11-30
V.p. Electric INC.North Branford2006-02-01
Valcor Communications Corp.East Hartford2006-02-01
Valley Air Conditioning & Heating, INC.Simsbury2006-02-01
Valley Electric, LLCCanton2006-02-01
Valley Electrical ServiceBeacon Falls2025-09-24
Valley Hydro Pros, LLCCanton2025-03-24
Valley View ServicesWest Cornwall2024-10-20
Van Allen Plumbing & HeatingLitchfield2006-02-01
Van Hennik Electric, LLCClinton2025-02-04
Vandale Electric, LLCNorth Stonington2018-09-17
Vaz Plumbing Heating & CoolingDanbury2016-07-10
Venora Electric, Inc.Bloomfield2006-02-01
Ventura Barbershop, LLCTaftville2022-12-11
Venture Home Solar, LLCSouthington2020-12-23
Verogy Holdings, LLCWest Hartford2023-07-30
Vertiv CorporationWallingford2023-10-04
Vial Electric & CompanyNew Milford2007-12-03
VIC Enterprises, LLCTrumbull2024-01-11
Vierra Heating & Cooling, LLCWaterbury2013-03-24
Viglione Heating & Cooling, Inc.East Haven2012-04-23
Viking Construction, INC.Bridgeport2023-07-02
Viking Electrical Contractors, LLCNewington2016-10-24
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Vincent Cahill and Sons Excavating IncRockfall2025-03-09
Vision Electric Inc.Torrington2006-02-01
Vitale Electric LLCPlainville2025-11-23
Voka Plumbing & Heating, Inc.Fairfield2020-05-17
Volt-Tech, LLCWestbrook2012-12-10
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W.b. Dickenson Plumbing & HeatingSouth Windsor2006-02-01
W.F. Lebeau Plumbing & Heating, Inc.Willimantic2022-09-27
Walker Electrical Contractors, LLCTorrington2023-08-14
Walter Electric, LLCNew London2006-02-01
Wanczyk Electric, LLCEnfield2023-10-04
Warco Plumbing & Heating Inc.Stamford2007-01-11
Warren J. Gottier Plumbing & Heating, Inc.Vernon2006-02-01
WAT Holding LLCWindsor Locks2006-04-23
Water Dr., LLCAnsonia2014-11-09
Water Wizards Irrigation, LLCCoventry2016-02-29
Water-Flo, Inc.Clinton2006-02-01
Waterford Electrical CompanyWaterford2012-12-10
Waterman Electric LLCBethel2006-02-01
WCES, Inc.Waterbury2012-01-29
WD Home Services, LLCPutnam2024-12-02
Web Industries Hartford, Inc.Dayville2018-05-29
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Werner Water Systems LLCBridgewater2026-06-09
Wesleyan UniversityMiddletown2008-07-28
West Electric LLCEast Hartford2014-07-28
West Hartford Electric, LLCWest Hartford2020-12-23
West Side Oil CompanyWest Suffield2006-02-01
West State Mechanical, INC.Torrington2006-02-01
Westmore Fuel Company, Inc.Greenwich2007-03-01
Westville-Crest Plumbing & Heating, Inc.West Haven2006-02-01
Wethersfield Electric, LLCWethersfield2024-09-09
Wicks Electric, LLCOxford2022-03-28
Wilcox Fuel Inc.Westbrook2006-02-01
Wild Electric, LLCWoodbury2025-06-05
William Perotti & Sons, Inc.East Canaan2006-02-01
Williams Fuel Oil Company, LLCStafford Springs2006-02-01
Wilson Electrical LLCManchester2014-08-13
Wilton Electric Co. Inc.Wilton2006-02-01
Wilton Plumbing & Heating Corp.Bethel2006-02-01
Windham County Sheet Metal, Inc.Quinebaug2006-02-01
Windsor Locks Public SchoolsWindsor Locks2026-04-12
Windsor Sheet Metal Services Inc.Windsor Locks2015-01-22
Winstanley Enterprises, LLCNew Haven2022-03-07
Wire Tech, LLCWatertown2024-01-21
Wired Electrical Contracting Services, LLCWilton2012-09-18
Wiremen, INC.Waterbury2006-02-01
Wiremold Co.West Hartford2006-02-01
Wittig Mechanical, LLCSomers2021-11-07
WJ Electric, LLCSeymour2011-12-14
Woodcock Refrigeration Co., Inc.South Windsor2006-02-01
Woodstock Valley ElectricAshford2020-03-26
Wragg Well Drilling & Pump Service LLCRoxbury2014-07-29
Wrcc New Heights Early Childhood ProgramWillimantic2025-05-28
Wyman Energy Services, Inc.Manchester2006-02-01
Wyman Gordon Invest. Castings, Inc.Groton2007-07-19
X-treme Temp Heating & Cooling, LLCWallingford2019-09-22
Xcel Tool & Manufacturing Co., LLCMilford2018-09-04
Xclusive CutsMeriden2025-06-29
Yale New Haven Health Services Corp.New Haven2020-03-18
Yankee Electric Construction Co. Inc.Fairfield2006-02-01
Yankee Oil, Inc.Mansfield2006-02-01
Yankee Service Company, LLC.Scotland2006-02-01
Your Plumber, LLCStratford2008-03-16
Zachas Electric, LLCColchester2022-09-27
Zap’s BarbershopWilton2025-10-13
Zebra Plumbing, LLCMilford2020-02-23
Zelek Electric Co.Old Lyme2006-02-01
Zlotnick Construction, INC.Mansfield2024-09-17
ZRL Mechanical LLCSeymour2026-05-05
Name not shownBridgeport2006-02-01
Name not shownEnfield2021-07-18
Name not shownFairfield2024-01-21
Name not shownWolcott2022-12-11

Source: apprenticeship.gov Partner Finder sponsor file (Last-Modified October 7, 2026). Organization fields only: the file also names contact people, which we never publish. Rows whose ZIP code contradicts the state were left out.

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