2026 State Licensing Guide
HVAC licensing requirements vary widely across the United States. Some states require a full contractor license with years of experience and a rigorous exam. Others leave regulation entirely to local jurisdictions. One rule applies everywhere: EPA Section 608 certification is federally required for any technician who handles regulated refrigerants.
50
States covered
33
Require a state license
17
Local or no requirement
EPA 608 Certification Required in All 50 States
Regardless of local licensing rules, any technician who purchases, handles, or works with regulated refrigerants must hold EPA Section 608 certification under the Clean Air Act. This federal requirement cannot be waived by any state or local law. EPA 608 Universal — covering Type I, II, and III systems — is the most useful tier for most HVAC roles.
License requirements change. Always verify current rules with your state licensing board before starting work or applying for a license.
These states leave HVAC licensing to local jurisdictions or have registration-only requirements. Requirements vary by city, county, or municipality — always check with the local building department before starting work.
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