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Geothermal Technicians: apprenticeship hours and pay
O*NET-SOC 49-9099.01 · BLS: Installation, Maintenance, and Repair Workers, All Other
Approved apprenticeship titles
One apprenticeship title on the Department of Labor's approved list fall under Geothermal Technicians, trained competency-based, hybrid, time-based. The shortest approved term is 4,000 hours, for Ground Heat Exchanger Installer (NOF) (competency-based).
| Title | RAPIDS code | Approach and term |
|---|---|---|
| Ground Heat Exchanger Installer (NOF) | 4017 | Competency-Based: 4,000 hours Hybrid: 4,000 to 8,000 hours Time-Based: 4,000 hours |
Time-based programs count hours on the job; competency-based programs move on when the apprentice shows the skills; hybrid programs use both, within a range of hours (29 CFR 29.5(b)(2)). Each registered program sets its own term inside what the approved title allows.
What geothermal technicians earn, by state
Alaska has the highest state median for geothermal technicians ($75,360) and Puerto Rico the lowest ($26,110), across the 54 states with a published figure.
| State | Median pay | Hourly | Jobs |
|---|---|---|---|
| Alaska | $75,360 | $36.23 | 100 |
| Hawaii | $74,260 | $35.70 | 970 |
| Guam | $64,650 | $31.08 | 50 |
| Washington | $63,080 | $30.33 | 3,550 |
| Maine | $61,380 | $29.51 | 1,230 |
| Minnesota | $60,250 | $28.97 | 2,140 |
| Massachusetts | $59,890 | $28.79 | 1,240 |
| Rhode Island | $59,890 | $28.79 | 180 |
| District of Columbia | $59,320 | $28.52 | 130 |
| New York | $56,900 | $27.36 | 5,390 |
| Connecticut | $56,110 | $26.98 | 2,490 |
| Illinois | $55,780 | $26.82 | 5,350 |
| Utah | $53,110 | $25.53 | 2,750 |
| Oregon | $52,230 | $25.11 | 2,650 |
| North Dakota | $52,040 | $25.02 | 790 |
| Missouri | $52,000 | $25.00 | 2,390 |
| Idaho | $51,680 | $24.84 | 990 |
| Kentucky | $51,310 | $24.67 | 1,110 |
| California | $51,230 | $24.63 | 23,630 |
| Kansas | $51,060 | $24.55 | 1,020 |
| Vermont | $51,030 | $24.53 | 580 |
| Colorado | $50,840 | $24.44 | 4,980 |
| Louisiana | $50,660 | $24.36 | 7,970 |
| Nevada | $50,190 | $24.13 | 4,000 |
| New Mexico | $50,010 | $24.04 | 500 |
| Arizona | $49,990 | $24.03 | 4,010 |
| Maryland | $49,950 | $24.01 | 4,200 |
| New Jersey | $49,920 | $24.00 | 3,970 |
| Oklahoma | $49,420 | $23.76 | 970 |
| Wisconsin | $49,100 | $23.61 | 2,360 |
| New Hampshire | $49,030 | $23.57 | 460 |
| Nebraska | $48,940 | $23.53 | 770 |
| U.S. Virgin Islands | $48,700 | $23.42 | 40 |
| Iowa | $48,680 | $23.40 | 2,050 |
| Georgia | $48,490 | $23.31 | 7,430 |
| South Dakota | $48,490 | $23.31 | 560 |
| Montana | $48,360 | $23.25 | 1,010 |
| Delaware | $48,310 | $23.23 | 510 |
| Wyoming | $48,260 | $23.20 | 100 |
| Tennessee | $48,200 | $23.17 | 3,730 |
| Pennsylvania | $48,180 | $23.17 | 5,380 |
| Indiana | $48,120 | $23.14 | 1,570 |
| Virginia | $47,910 | $23.03 | 5,580 |
| West Virginia | $47,850 | $23.01 | 570 |
| Ohio | $47,550 | $22.86 | 3,620 |
| Michigan | $47,470 | $22.82 | 5,800 |
| North Carolina | $46,780 | $22.49 | 4,650 |
| Alabama | $46,610 | $22.41 | 1,440 |
| South Carolina | $46,430 | $22.32 | 2,240 |
| Florida | $46,290 | $22.25 | 16,340 |
| Arkansas | $45,830 | $22.03 | 1,350 |
| Texas | $45,360 | $21.81 | 18,580 |
| Mississippi | $44,370 | $21.33 | 910 |
| Puerto Rico | $26,110 | $12.55 | 580 |
Finding a program
The public sponsor file names the organizations that run registered apprenticeships but not the occupations each one trains, so this guide names no sponsor. Search apprenticeship.gov's Apprenticeship Finder for this title, or ask your American Job Center which local programs train it.
Apprenticeship sponsors by state (25,633) · All approved occupations
Sources: apprenticeship.gov approved occupations list (Last-Modified October 8, 2026); BLS Occupational Employment and Wage Statistics, May 2025 (all industries; blanks are figures BLS does not publish).