Registered HVAC technician apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Maryland's licence ladder. Updated nightly.
Maryland has 711 registered HVAC technician apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 18 counties, 1.2 per 10,000 residents. That is 7.0 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 |
|---|---|---|---|
| Baltimore County | 380 | 53% | 4.5 |
| Baltimore city | 63 | 9% | 1.1 |
| Prince George's County | 58 | 8% | 0.6 |
| Anne Arundel County | 46 | 6% | 0.8 |
| Harford County | 32 | 5% | 1.2 |
| Montgomery County | 28 | 4% | 0.3 |
| Cecil County | 25 | 4% | 2.4 |
| Washington County | 24 | 3% | 1.5 |
| Howard County | 17 | 2% | 0.5 |
| Carroll County | 15 | 2% | 0.8 |
| Frederick County | 8 | 1% | 0.3 |
| Calvert County | 3 | 0% | 0.3 |
| Garrett County | 3 | 0% | 1.1 |
| Wicomico County | 3 | 0% | 0.3 |
| Queen Anne's County | 2 | 0% | 0.4 |
| 3 other counties | 4 | 1% |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
Maryland records apprentices on its own HVAC technician licence register as HVACR APPRENTICE LICENSE: 4,698 active apprentice-tier records against 1,587 journeyman records, a ratio of 2.96 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 Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration Contractors, within the Division of Occupational and Professional Licensing (Maryland Dept. of Labor). issues for this trade: Master, Master Restricted, Limited, Journeyman, Apprentice. See how to get a HVAC technician license in Maryland 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: Maryland register read September 16, 2026; population: U.S. Census 2023 estimates.
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