Registered HVAC technician apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Indiana's licence ladder. Updated nightly.
Indiana has 359 registered HVAC technician apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 51 counties, 0.5 per 10,000 residents. That is 4.5 apprentices for every 100 employed HVAC technicians in the state, the rate at which the trade is training its own replacements.
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Registered HVAC technician apprentices by county of the apprentice, largest first. Each county links to its HVAC technicians market page.
| County | Apprentices | Share | Per 10k residents |
|---|---|---|---|
| Marion County | 76 | 21% | 0.8 |
| Hamilton County | 29 | 8% | 0.8 |
| Madison County | 26 | 7% | 2.0 |
| Allen County | 25 | 7% | 0.6 |
| Johnson County | 22 | 6% | 1.3 |
| Hendricks County | 18 | 5% | 1.0 |
| Kosciusko County | 13 | 4% | 1.6 |
| Morgan County | 11 | 3% | 1.5 |
| Clark County | 10 | 3% | 0.8 |
| Harrison County | 10 | 3% | 2.5 |
| Hancock County | 8 | 2% | 0.9 |
| Carroll County | 7 | 2% | 3.4 |
| Floyd County | 7 | 2% | 0.9 |
| Vanderburgh County | 7 | 2% | 0.4 |
| Shelby County | 6 | 2% | 1.3 |
| 36 other counties | 84 | 23% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
Credential types the No statewide HVAC licence and no state mechanical board. Licensing is municipal; the Professional Licensing Agency licenses plumbing but not HVAC. issues for this trade: Municipal HVAC or general contractor registrations, Federal EPA Section 608 technician certification, No state HVAC licence. See how to get a HVAC technician license in Indiana for hours, exams and renewal.
Sources: registered apprentices: DOL RAPIDS apprenticeship FY2025, active status, as of December 31, 2025; employment: BLS QCEW construction x OEWS occupation share (estimate); population: U.S. Census 2023 estimates.
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