Do I Need a Permit to Install Central Air in Wisconsin?
Central air conditioning installation requires an HVAC/mechanical permit in virtually every Wisconsin municipality.
Yes, you typically need a permit. Requirements vary by municipality. Check with your local building department for specifics.
Where to Apply
Permit requirements, fees, and processing times vary by municipality. Check the specific requirements for your location:
Browse all jurisdictions →Frequently Asked Questions
Do I need a permit to install central AC?
Yes. HVAC work in Wisconsin requires a mechanical permit. The installation must be performed by or under a credentialed HVAC contractor.
Can I install my own central air?
Homeowners can do HVAC work on their own owner-occupied home in some municipalities, but must pull the permit and pass inspection. Refrigerant handling requires EPA 608 certification.
How much does an HVAC permit cost?
HVAC/mechanical permits typically cost $50-$300 in Wisconsin, depending on the municipality and project scope.
Building in multiple cities?
See permit requirements for any Wisconsin municipality instantly. Compare fees, timelines, and processes side by side across your active jurisdictions.