Wisconsin requires contractor registration for all HVAC businesses, with an optional but increasingly expected HVAC Qualifier Certification for individual technicians. New HVAC code updates took effect October 2025.
HVAC Qualifier Certification: 4,000 hours per year for 4 years (in supervising, designing, installing, servicing, or maintaining HVAC systems); or 4 years of study in mechanical engineering or HVAC-related programs.
Yes — for Qualifier Certification: DSPS-administered exam, 100 questions, 4-hour limit, open book, 70% passing score. Exam fee: $25.
Contact DSPS for current CE requirements for Qualifier Certification renewal. Updated HVAC code effective October 1, 2025.
Contact DSPS for current reciprocity agreements
Reciprocity agreements can change. Always verify current status directly with Wisconsin Department of Safety and Professional Services before relying on reciprocity for licensure.
Wisconsin's two-tier approach (mandatory contractor registration + optional individual certification) is a common source of confusion. The Qualifier Certification, while not legally required for technicians, is increasingly expected in practice and required for certain project types. New HVAC code updates took effect October 2025.
EPA 608 Certification — Required in All 50 States
Regardless of Wisconsin's state licensing rules, any technician who purchases, handles, or works with regulated refrigerants must hold EPA Section 608 certification. This is a federal requirement under the Clean Air Act that no state law can waive. EPA 608 Universal (covering Type I, II, and III) is the most versatile credential for most HVAC roles.
Browse EPA 608 Universal jobs in WisconsinNew listings matching your preferences, delivered daily — free.
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Last verified: 2026 · Always confirm current requirements with your state licensing board before starting work or submitting an application.
Wisconsin Department of Safety and Professional Services (DSPS)
Visit official board website