HVACPermitGuide is a free, independently maintained directory of HVAC permit requirements for US homeowners. We exist because the answer to "do I need a permit to replace my AC?" is genuinely complicated โ and the current internet landscape offers fragmented contractor blog posts, siloed county government PDFs, and form-based services that obscure the information behind lead-gen forms.
We don't sell leads. We don't take advertising from HVAC contractors. We don't have referral relationships with any building department, contractor, or HVAC manufacturer. Our only revenue comes from Google AdSense display advertising โ contextual ads served by Google, not by us.
Every guide on this site is written based on:
HVACPermitGuide is an informational resource, not a professional service. We are not:
For authoritative, binding answers about permit requirements at your specific address, always contact your local building department directly. Our guides are starting points, not final answers.
We publish guides for all 50 states, with particular depth in the Northern Kentucky and Cincinnati, Ohio metro area โ the region where this site originated and where our primary research network is strongest. The Boone County, KY and Hamilton County, OH guides reflect direct verification with those building departments.
Questions, corrections, or data updates? We take accuracy seriously โ if you've verified information that differs from what we've published, we want to know. Contact us here.