Yes, most do. You need a mechanical permit to install an AC in Miami, including a straight swap of the same-size unit.
A few small jobs are exempt, like part repairs and window units.
Florida’s new $7,500 permit exemption may help, but it excludes air conditioning.
Which AC Jobs Need a Permit in Miami?
Any job that installs, replaces, or moves central AC equipment needs a mechanical permit.
- A brand new central AC system or Miami AC installation in an addition
- A change-out of the condenser, the air handler, or both
- Moving the outdoor unit to a new spot
- New or altered ductwork
- A ductless mini-split system
Some cities also require a separate electrical permit, mostly when the breaker or wiring changes.
Jobs That Usually Skip the Permit
Miami-Dade County’s exemption list covers replacing a part that doesn’t alter the system’s approval or make it unsafe.
A new capacitor or fan motor usually falls here. Swapping out a window unit is exempt too. If you are weighing whether to repair or replace, note that a repair often skips the permit step.
Does Florida’s New $7,500 Permit Exemption Cover AC Work?
No. HB 803 took effect on July 1, 2026, and it excludes mechanical work, including air conditioning systems. A condenser swap under $7,500 still needs a permit.
The law lets some small, non-structural projects on single-family homes skip the permit if the total job is under $7,500. It also does not apply to electrical, plumbing, or structural work, or to homes in a flood zone.
Even for work that qualifies, the exemption is not automatic. The building department must first approve a written request. The Village of Pinecrest spells out this process on its building page.
Watch for this mistake. If an installer says a small AC job under $7,500 needs no permit, treat it as a red flag, just like the other common AC scams around Miami.
Who Files the AC Permit: You or Your Contractor?
Your licensed AC contractor files the permit in almost every case. The contractor whose name is on the permit answers for the inspection.
Miami-Dade allows owner-builder permits with an extra form. But the owner then takes on the code responsibility for the whole job. For most people, that trade is not worth it.
Our team works under state contractor license CAC058371.
Before you sign with anyone, look up their license with the Florida Department of Business and Professional Regulation.
What the Inspector Checks on a Miami-Dade AC Change-Out
The inspector checks that the new equipment matches the paperwork, meets efficiency rules, and is tied down for hurricane winds. Miami-Dade sits in Florida’s High-Velocity Hurricane Zone, so the tie-down part gets real attention.
A typical change-out packet includes:
- An equipment data sheet that lists the old and new unit, tonnage, breaker size, and efficiency rating.
- An AHRI certificate for the new matched system.
- Proof the unit is anchored right. Miami Beach, for example, accepts the unit’s Notice of Acceptance, a state product approval, or signed and sealed engineering.
New equipment also has to meet the SEER2 efficiency minimums that took effect on January 1, 2023. Proper anchoring is also part of smart hurricane-season prep for any outdoor unit.
Permit approval and inspection shape your installation day timeline.
What If Your Air Conditioner Dies and You Can’t Wait for a Permit?
Florida Building Code Section 105.2.1 lets a contractor replace equipment in an emergency and submit the permit application the next business day.
The details still change from city to city:
- Miami Shores asks the contractor to call or send a form before starting, then file the next business day. A contractor who skips that step and works without a permit pays double the fee.
- Doral wants the electronic permit application completed and paid before the replacement is finished. Doing the work without a permit costs twice the base fee plus a $100 fine.
If your system quits during a heat wave, call for emergency AC service and ask how they will handle the permit for your city.
Why Your Address Decides the Permit Rules
Who issues the permit depends on where you live. Homes in unincorporated areas, like Kendall, go through Miami-Dade County’s Permitting and Inspection Center.
Cities such as Miami, Coral Gables, Doral, and Pinecrest run their own building departments, with their own forms and fees.
The Miami-Dade mechanical permits page covers the county side. If you are not sure which department covers your home, call your city hall or a licensed contractor before work starts.
Rules on thresholds and forms change, so confirm them at the time of your job.
Get the Permit Number Before Your New AC Goes In
A legal install starts with a permit number. Ask your contractor to show it to you before the old unit comes out.
Keep the final inspection record with your home papers, since an open or missing permit can come up later when you sell.
If cost is a worry, see our financing options, then call us at 305-951-7658 to plan your install.
