AC codes and rules every Kendall homeowner should know (2026)

Published: 2026-10-14 · By Equipo Kendall AC Repairs

Replacing or installing an air conditioner in Kendall isn't just buying a unit: there are rules from the Florida Building Code, Miami-Dade County and the federal government. Almost nobody knows them until something goes wrong: insurance won't pay for damage, a home sale stalls over a missing permit, or the inspector rejects the job. This guide explains, in plain language, what you need to know so your AC is up to code.

Who sets the rules

Four layers of rules meet in Kendall:

• The Florida Building Code. The state's technical law: how equipment, drainage, electrical and anchoring are installed. The 8th edition (2023) is in force today. The 9th edition (2026) takes effect on December 31, 2026: in Miami-Dade, every permit application submitted from that date on must comply with it.
• Miami-Dade County. Most of Kendall is unincorporated, so permits come from the county building department (RER, Building). A tip: if your property's folio number starts with 30, your home is in the unincorporated area. If you live inside a city (Pinecrest, Palmetto Bay, Cutler Bay), that city issues the permit.
• The Department of Energy (DOE). Sets minimum efficiency for new equipment.
• The Environmental Protection Agency (EPA). Regulates refrigerants and who can handle them.

Do you need a permit?

To replace equipment (the outdoor unit, the indoor air handler or the whole system), yes. Also to relocate it, change its size or add electric heat strips. Minor repairs, like replacing a capacitor or a fan motor or clearing the drain line, usually don't need one; if in doubt, ask the building department before starting.

What's worth knowing about the permit:

• The licensed contractor pulls it and it's in their name. If someone tells you a replacement "doesn't need a permit," that's a red flag.
• You can pull it yourself as an owner-builder, but state law sets conditions: you sign the application in person, the home must be for your own use, you directly supervise the work, and you can't hire an unlicensed person to do it. If you sell or rent the home within the first year, the law presumes it wasn't for you.
• In Miami-Dade, repairing or replacing an existing AC system that costs less than $15,000 doesn't require a Notice of Commencement.
• The job is done when it passes the final inspection. Keep the permit number and the inspection result.

We walk through the process step by step in our guide Do I need a permit to replace my AC in Miami-Dade?.

The contractor's license

In Florida, anyone installing or replacing air conditioners needs an air conditioning contractor license (Class A or Class B) or a mechanical contractor license, issued by the state (DBPR) or registered with the county. On top of that, any technician who handles refrigerant must hold EPA 608 certification.

Before you sign:

• Ask for the license number and look it up on the state licensing site (myfloridalicense.com).
• Check that the quote includes the permit and inspection.
• Be wary of anyone who only takes cash, puts nothing in writing or won't give a license number.

Minimum efficiency: SEER2

Since January 1, 2023, Florida has been in the DOE's Southeast region, with higher minimums than the northern states:

• Split central AC under 3.5 tons: 14.3 SEER2 (equal to 15 SEER).
• Split central AC 3.5 tons or larger: 13.8 SEER2 (14.5 SEER).
• Heat pump: 14.3 SEER2.
• Package unit: 13.4 SEER2.

For split ACs in the Southeast, the rule goes by installation date: an old condenser that doesn't comply can't be installed today, even if it's brand new in the box. The permit requires an AHRI certificate, which proves the combination of outdoor and indoor units meets the minimum. Ask your contractor for a copy: you'll need it for the warranty too.

Refrigerants: R-22, R-410A and the new ones

• R-22 (old Freon). No longer produced or imported in the US since 2020; only recycled supply remains, and it keeps getting more expensive. If your unit uses R-22, a major leak is almost always a reason to replace it.
• R-410A. The standard for the last 15 years. The EPA had banned installing new R-410A systems starting January 1, 2026, but in May 2026 it removed that deadline for equipment manufactured or imported before January 1, 2025. It can still be installed while inventory lasts, but R-410A supply is being cut by law and its price is rising.
• R-454B and R-32. The refrigerants in new equipment. They're mildly flammable (class A2L), so technicians need specific tools and training.

A practical rule: they don't mix. The outdoor unit and the indoor coil must be designed for the same refrigerant. If you're offered a condenser-only replacement, ask which refrigerant it uses and whether your indoor coil is compatible.

What the inspector checks in Kendall

Miami-Dade is in the High Velocity Hurricane Zone (HVHZ), the strictest in the country. At the final inspection of an AC replacement, inspectors typically check:

• Anchoring of the outdoor unit with approved tie-downs (Florida product approval or a Miami-Dade NOA), per the tie-down details in the permit.
• The pad: a level concrete slab (or approved material) at least 3 inches above grade. In a flood zone, the equipment must sit above the flood level the code requires.
• The disconnect switch within sight of the outdoor unit, and a breaker and wire sized to the unit's nameplate.
• The condensate drain: at least 3/4-inch pipe, sloped, with a trap if the manufacturer requires it, discharging away from the house.
• The secondary pan under the air handler where a leak could damage the home (for example, in the attic), with its own drain line or a float switch that shuts the unit off if it fills.
• If the air handler is in the attic: enough access to remove it, a light and an outlet nearby, and clear space to service it.
• Refrigerant line insulation protected from the sun.

What happens if it's done without a permit

A replacement without a permit can look cheaper, but it ends up costing more:

• Insurance may refuse to pay for damage (water from a leak, an electrical fire) caused by unpermitted work.
• When you sell, permits are checked in county records. New equipment without a permit, or a permit left open without a final inspection, can hold up the closing.
• The county can require you to legalize the work afterwards, with added fees and the risk of redoing parts that don't comply.

Townhouses and condos

If you live in a townhouse or a condo, also check your association's (HOA) rules: many require prior approval to move the unit, screen it or put it on the roof. In condos, the outdoor unit is sometimes in a common area, and the replacement needs the association's approval in addition to the county permit.

Quick checklist before replacing your AC

• Contractor's license number, verified with the state.
• Permit included in the quote.
• AHRI certificate with the SEER2 of the full system.
• New unit's refrigerant, in writing.
• Approved anchoring for the outdoor unit.
• Final inspection passed.
• Saved: permit, inspection, AHRI certificate and warranty registration.

This guide is for information and summarizes general rules; for your specific case, your local building department has the final word. If you need to replace your AC in Kendall, we'll connect you with a Florida-licensed technician who handles the permit and inspection.

Sources

• Miami-Dade: change to the 9th edition of the Florida Building Code
• Miami-Dade: how to apply for a permit
• AC replacement requirements checklist (Cutler Bay, Miami-Dade)
• Florida Statute 489.103: owner-builder
• ICC: 2023 efficiency requirements
• Southeast region minimums by size
• ACHR News: EPA removes the R-410A installation deadline