Registered HVAC technician apprentices by county, open recruitment windows where the state publishes them, and how the apprentice tier fits Wisconsin's license ladder. Updated nightly.
Wisconsin has 384 registered HVAC technician apprentices in active status (fiscal year 2025, DOL RAPIDS), placed in 11 counties, 0.6 per 10,000 residents. That is 6.3 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 |
|---|---|---|---|
| Milwaukee County | 156 | 41% | 1.7 |
| Dane County | 116 | 30% | 2.0 |
| Outagamie County | 50 | 13% | 2.6 |
| Racine County | 22 | 6% | 1.1 |
| Eau Claire County | 21 | 5% | 1.9 |
| Adams County | 6 | 2% | 2.8 |
| Grant County | 5 | 1% | 1.0 |
| Kenosha County | 4 | 1% | 0.2 |
| Juneau County | 2 | 1% | 0.8 |
| Pierce County | 1 | 0% | 0.2 |
| St. Croix County | 1 | 0% | 0.1 |
Source: DOL RAPIDS apprenticeship FY2025, active status, county-coded; as of December 31, 2025.
The Wisconsin register ATI reads carries no separate apprentice-tier credential for HVAC technicians; its ladder for this trade starts at Journeyman (614 active records, read October 6, 2026). Registered apprentices in the county table above are counted from the federal apprenticeship system, not from the license register.
Credential types the Wisconsin Department of Safety and Professional Services (DSPS), Division of Professional Credential Processing and Division of Industry Services issues for this trade: HVAC Qualifier certification, HVAC Contractor registration, UDC HVAC Inspector. See how to get a HVAC technician license in Wisconsin 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); license tiers: Wisconsin register read October 6, 2026; population: U.S. Census 2023 estimates.
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