Do I Need a Permit for AC Replacement?
What this costs
| Option | Job | Low | High |
|---|---|---|---|
| Replace | AC Replacement | $3,800 | $9,050 |
Local examples
These are samples and can change.
- Portland, Oregon: electrical and mechanical permits for AC.
- Seattle, Washington: a refrigeration permit for any split system heat pump, air conditioner or job with refrigeration piping. Only licensed refrigeration contractors can get it. The city may also need a noise review if equipment goes in a side yard.
- San Diego, California: a simple no-plan permit, usually issued within 2 business days, for single-family homes, townhomes and duplexes.
- Phoenix, Arizona: a guide from October 2011 lists replacing an AC without increasing its size, capacity or location as not needing a permit. Check that it's still current.
Who pulls it
In Seattle, a homeowner can't get a refrigeration permit, so the contractor must. In San Diego, homeowners can apply for the simple permit. Ask your contractor to include the permit and inspection in the quote and to show you the final approval.
Why it matters
We recommend a licensed HVAC technician for refrigerant work anyway. EPA's Section 608 program bars intentionally venting refrigerants, including HFCs. Phoenix also warns that non-permitted work can bring trouble when you sell and that insurance may not cover issues it causes.
Common questions
Do I need a permit to repair my AC?
Does my contractor handle it?
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Last verified 2026-11-04
- City of Portland, Oregon: Trade permits — Air conditioning needs electrical and mechanical permits.
- City of Seattle: Furnace and refrigeration permits FAQ — Refrigeration permit for split system AC; only licensed refrigeration contractors can get it; noise review.
- City of San Diego: Simple no-plan mechanical permit — AC unit installs under simple permit; homeowners and contractors can apply; usually issued within 2 business days.
- City of Phoenix: Owner's guide to residential permits (October 2011) — Repair or replacement of existing AC without increasing size, capacity or location is listed as not requiring a permit.
- EPA: Section 608 of the Clean Air Act (updated Sept. 3, 2026) — Prohibits intentionally venting ODS refrigerants and substitutes such as HFCs during service, repair or disposal.
- City of San Diego: What permits do I need? — Repair only of these systems doesn't require a permit.
General information, not professional advice. Conditions, codes and prices vary. Turn off power, gas or water before any work, and hire a licensed professional when in doubt. Cost figures are our estimates, not quotes.