Registered HVAC technician apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Massachusetts's licence ladder. Updated nightly.
Massachusetts has 91 registered HVAC technician apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 9 counties, 0.1 per 10,000 residents. That is 1.0 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 |
|---|---|---|---|
| Bristol County | 49 | 54% | 0.8 |
| Hampden County | 10 | 11% | 0.2 |
| Middlesex County | 9 | 10% | 0.1 |
| Plymouth County | 9 | 10% | 0.2 |
| Essex County | 4 | 4% | 0.0 |
| Norfolk County | 4 | 4% | 0.1 |
| Suffolk County | 3 | 3% | 0.0 |
| Worcester County | 2 | 2% | 0.0 |
| Barnstable County | 1 | 1% | 0.0 |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
Credential types the Bureau of Pipefitters, Refrigeration Technicians and Sprinkler Fitters, Office of Public Safety and Inspections (OPSI), Massachusetts Division of Occupational Licensure issues for this trade: Refrigeration Apprentice, Refrigeration Technician, Refrigeration Contractor, Pipefitter, Federal EPA Section 608 technician certification. See how to get a HVAC technician license in Massachusetts 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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