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Phoenix heating and air conditioning permits and rules

Source: Arizona HVAC Help (arizonahvachelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.

Heating and air conditioning permits in Phoenix

Phoenix screens AC unit replacements at the permit counter. If any answer is yes, a permit is required: a different location, footprint, weight or duct penetrations, a differently sized unit, more than 2,000 CFM, duct or condensate changes, a new refrigerant type such as A2L, or components inside the building; a change in outdoor air opening size or location or a new outdoor air hood; a gas burner with a higher BTU or CFH heating demand (a full gas piping isometric from the meter is then required); or a higher amp draw or new wire or fuse size (guideline revised September 10, 2026). Questions: (602) 262-7811. (source: City of Phoenix Planning and Development)

Portable or plug and cord connected heating, cooling or ventilating equipment needs no mechanical permit, and repair or in kind replacement of evaporative coolers rated not more than 6,500 cfm is exempt. (source: City of Phoenix Planning and Development)

Statewide rules that apply here

Heating and air conditioning contractors in Arizona must hold a contractor license from the Registrar of Contractors unless an exemption applies (A.R.S. 32-1151). Check the license and its classification on ROC's contractor search before you hire. (source: Arizona State Legislature)

A person without a contractor license may do a job under $1,000 in total (labor, materials and everything else) only if the work is casual or minor (A.R.S. 32-1121(A)(14)). The exemption does not apply when the work needs a local building permit (A.R.S. 32-1121(A)(14)(a)), when the job is part of a larger operation or split into smaller contracts (A.R.S. 32-1121(A)(14)(b)), or when the person uses any advertising to the public that does not include the words "not a licensed contractor" (A.R.S. 32-1121(A)(14)(c)). (source: Arizona State Legislature)

The under $1,000 exemption never covers work that connects to natural gas, propane or other petroleum or gaseous fuel, including installing, maintaining or repairing appliances, or fire safety work such as hardwired or interconnected smoke alarms and fire sprinklers (A.R.S. 32-1121(D)). So an unlicensed handyman may not swap a gas water heater or gas furnace, even for under $1,000. An owner doing their own work under the owner exemption is a separate rule. (source: Arizona State Legislature)

See AC rules in other cities, doing your own work and checking a contractor.

Other cities: Phoenix · Tucson · Mesa · Chandler · Scottsdale · Glendale · Surprise · Flagstaff · Gilbert · Goodyear · Yuma

On this site: Do I need a permit to replace an AC in Arizona? · When an AC change needs a permit in Phoenix · Mini-split and ductwork permits in Arizona · Evaporative cooler permits in Arizona · Can I do my own HVAC work in Arizona? · When does an Arizona contractor need a license? · Arizona contractor contract rules · How to check an Arizona contractor and complain · The Arizona Residential Contractors' Recovery Fund · Cities · FAQ · Sources

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