Registered HVAC technician apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits New Hampshire's licence ladder. Updated nightly.
New Hampshire has 45 registered HVAC technician apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 7 counties, 0.3 per 10,000 residents. That is 1.9 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 |
|---|---|---|---|
| Hillsborough County | 17 | 38% | 0.4 |
| Rockingham County | 14 | 31% | 0.4 |
| Grafton County | 4 | 9% | 0.4 |
| Merrimack County | 4 | 9% | 0.3 |
| Strafford County | 3 | 7% | 0.2 |
| Cheshire County | 2 | 4% | 0.3 |
| Carroll County | 1 | 2% | 0.2 |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
New Hampshire records apprentices on its own HVAC technician licence register as Mechanical Fuel Gas Fitting Trainee: 1,123 active apprentice-tier records against 6,563 journeyman records, a ratio of 0.17 apprentice records per journeyman, register read September 16, 2026. The register's apprentice tier and the federal registered-apprenticeship count in the county table are two different systems: a licence-register apprentice is anyone the state has credentialed to work under supervision, a registered apprentice is enrolled in a DOL-registered program.
Counts are license records, not people: a holder with more than one license appears once per license, and a contractor license is a business, not a worker.
Credential types the No New Hampshire HVAC, air conditioning or refrigeration license. The mechanical licensing board established under RSA 153:27-a, administered by the Office of Professional Licensure and Certification, licenses fuel gas fitters and plumbers, and separately runs a voluntary certification program for oil heating installers and service personnel. issues for this trade: Fuel gas installation technician, Fuel gas service technician, Fuel gas piping installer, Fuel gas trainee, Hearth system installation and service technician, Domestic appliance technician, Certified heating installer / heating equipment service personnel (voluntary, Mec 700), Mechanical business entity license. See how to get a HVAC technician license in New Hampshire 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); licence tiers: New Hampshire register read September 16, 2026; population: U.S. Census 2023 estimates.
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