Air conditioning failures during an Arizona summer are not ordinary maintenance requests. They can become habitability emergencies within hours.
Arizona does not have one statewide thermostat number for every rental property.
State law creates a baseline duty to maintain cooling that is installed or offered. Some cities add specific indoor-temperature limits. Other communities rely on construction codes, county rules or the statewide habitability standard.
That makes the property’s exact jurisdiction important. A Phoenix mailing address does not always mean the property is inside Phoenix. Names such as Anthem, San Tan Valley and Sun City describe unincorporated communities rather than incorporated cities. Ahwatukee and Laveen are generally governed by Phoenix because they are Phoenix urban villages.
The following guide organizes the current requirements across every Arizona market served by Home Ladder, plus Tucson.
What Arizona Law Requires Statewide
Arizona Revised Statutes §33-1324 requires a residential landlord to:
- Comply with applicable building codes that materially affect health and safety.
- Keep the property fit and habitable.
- Maintain supplied or required heating, ventilation and air-conditioning equipment in good and safe working order.
- Supply reasonable air conditioning or cooling when a cooling system is installed and offered and seasonal weather requires it.
The statute does not currently establish one maximum indoor temperature for the entire state. A proposal introduced in 2026 would have added a statewide numeric standard, but it did not become current law.
That does not mean a landlord outside a city with a temperature ordinance can ignore an A/C failure. A nonworking system can still violate the lease and the statewide habitability and essential-services requirements. Residents may have remedies under A.R.S. §33-1364 after giving reasonable notice, including substitute housing, rent abatement or recovery of certain cooling costs.
For owners, the practical rule is much simpler: treat every loss of cooling during hot weather as an emergency, regardless of the minimum legal deadline.
How to Read the Cooling Requirements Matrix
The matrix uses three types of standards:
- Local rental operating standard: A city ordinance expressly regulates temperatures in occupied rental housing.
- Local building or property standard: A code requires cooling equipment to be capable of reaching a stated temperature. Its application to an older, legally existing rental may depend on the code section, the property’s permit history and the local code official.
- State baseline: No separate numeric private-rental limit was located in the published municipal code during this review. A.R.S. §33-1324 and the lease still require installed or offered cooling to be maintained and reasonable.
The temperature is a performance requirement—not a required thermostat setting. Where a local ordinance specifies a measurement method, officials commonly measure approximately three feet above the floor in the center of the room.
Arizona Cooling Requirements Matrix
Reviewed August 21, 2026. Property boundaries, codes and adopted editions can change. Confirm the parcel’s jurisdiction and current code before making a legal or compliance decision.
| Market | Controlling jurisdiction | Cooling requirement | Type and important notes |
|---|---|---|---|
| Ahwatukee | City of Phoenix | A/C must cool to 82°F or below; evaporative cooling to 86°F or below | Local rental operating standard under Phoenix City Code §39-5. Applies when the address is inside Phoenix. |
| Anthem | Usually unincorporated Maricopa County | State baseline; no enacted countywide numeric rental cap located | Verify the parcel. A Phoenix postal address or “Anthem” marketing name does not establish jurisdiction. Proposed 2026 county code changes are not current law unless formally adopted. |
| Apache Junction | City of Apache Junction | Existing rentals: state baseline. New or altered dwellings: cooling designed for 85°F or below | The 85°F provision is a local building-code capability standard, not a separate citywide rental-housing ordinance. |
| Arizona City | Unincorporated Pinal County | County code calls for cooling capable of 80°F or below | Pinal County building/property-maintenance amendments apply in unincorporated areas. Confirm application to the specific existing structure with county code enforcement. |
| Avondale | City of Avondale | State baseline | No separate numeric private-rental cooling limit located in the published city code. |
| Buckeye | City of Buckeye | State baseline | Installed or offered cooling must be maintained and provide reasonable seasonal cooling. |
| Carefree | Town of Carefree | State baseline | No separate numeric private-rental cooling limit located in the published town code. |
| Casa Grande | City of Casa Grande | State baseline | City construction and property codes still govern safe HVAC installation and maintenance. |
| Cave Creek | Town of Cave Creek | Existing legal rentals: state baseline. New or altered dwellings: cooling designed for 85°F or below | The 2026 residential-code provision is primarily a construction standard; the town code allows lawful existing occupancies to continue. |
| Chandler | City of Chandler | State baseline for ordinary private rentals | Chandler public-housing and assisted-housing programs may impose separate standards, but those program rules are not a citywide rule for every private rental. |
| Chandler Heights | Parcel-dependent: unincorporated Maricopa County, Queen Creek or Gilbert | Usually state baseline | “Chandler Heights” is not a single incorporated jurisdiction. Verify city limits using the parcel number. |
| Coolidge | City of Coolidge | State baseline | No separate numeric private-rental cooling limit located in the published city code. |
| El Mirage | City of El Mirage | State baseline | Installed or offered HVAC must remain in good and safe working order. |
| Eloy | City of Eloy | A/C must cool to 82°F or below; evaporative cooling to 88°F or below | Local rental operating standard under Eloy City Code §5-31. It covers single-family rentals, multifamily units and mobile homes. |
| Florence | Town of Florence | Existing rentals: state baseline. New construction and regulated mechanical work: cooling designed for 80°F or below | The 80°F language appears in the town’s residential and mechanical codes. Confirm application to an existing unit with the town. |
| Fountain Hills | Town of Fountain Hills | State baseline | No separate numeric private-rental cooling limit located in the published town code. |
| Gilbert | Town of Gilbert | State baseline | No separate numeric private-rental cooling limit located in the published town code. |
| Glendale | City of Glendale | A/C must cool to 82°F or below; evaporative cooling to 86°F or below | Local rental operating standard under Glendale City Code §29.1-15. The Spectra West enforcement action involved this rule. |
| Gold Canyon | Unincorporated Pinal County | County code calls for cooling capable of 80°F or below | Gold Canyon is not an incorporated city. Confirm application to the specific existing structure with Pinal County. |
| Goodyear | City of Goodyear | State baseline | No separate numeric private-rental cooling limit located in the published city code. |
| Guadalupe | Town of Guadalupe | State baseline | Installed or offered cooling must be maintained and provide reasonable seasonal cooling. |
| Laveen | Usually City of Phoenix | A/C must cool to 82°F or below; evaporative cooling to 86°F or below | Phoenix §39-5 applies inside city limits. Verify outlying parcels that may be in unincorporated Maricopa County. |
| Litchfield Park | City of Litchfield Park | State baseline | No separate numeric private-rental cooling limit located in the published city code. |
| Maricopa | City of Maricopa | State baseline | Do not apply unincorporated Pinal County’s numeric standard solely because the city is in Pinal County. Incorporated-city jurisdiction controls. |
| Mesa | City of Mesa | State baseline | No separate numeric private-rental cooling limit located in the published city code. State habitability duties still apply. |
| Paradise Valley | Town of Paradise Valley | State baseline | No separate numeric private-rental cooling limit located in the published town code. |
| Peoria | City of Peoria | Habitable spaces must be capable of remaining between 70°F and 90°F | Local property-maintenance standard under Peoria City Code §18-4/IPMC §602.2. Portable coolers cannot be used for permanent compliance. |
| Phoenix | City of Phoenix | A/C must cool to 82°F or below; evaporative cooling to 86°F or below | Local rental operating standard under Phoenix §39-5. Cooling must reach all habitable rooms, bathrooms and flushing-toilet rooms and generally be permanently installed. |
| Queen Creek | Town of Queen Creek | State baseline inside incorporated town limits | A “Queen Creek” mailing address may be outside the town. If the parcel is actually in unincorporated Pinal County, the county standard may apply. |
| San Tan Valley | Unincorporated Pinal County | County code calls for cooling capable of 80°F or below | San Tan Valley is an unincorporated community. Confirm application to the specific structure with Pinal County code enforcement. |
| Scottsdale | City of Scottsdale | Cooling facilities must be capable of 85°F or below | Local residential-code capability standard under Scottsdale Revised Code §31-52(c). Arizona housing-industry guidance treats 85°F as the local compliance target. |
| Sun City | Unincorporated Maricopa County | State baseline | Sun City is not an incorporated municipality. Verify the parcel before relying on a nearby city’s rule. |
| Sun City West | Unincorporated Maricopa County | State baseline | No enacted countywide numeric rental cap located as of this review. |
| Sun Lakes | Unincorporated Maricopa County | State baseline | Community and HOA names do not replace county jurisdiction. |
| Surprise | City of Surprise | Existing rentals: state baseline. New or altered dwellings: cooling designed to remain at 90°F or below | The 2026 local building-code amendments use a 68°F-to-90°F capability range. This is not a separate rental-housing operating ordinance. |
| Tempe | City of Tempe | A/C must cool to 82°F or below; evaporative cooling to 88°F or below | Local rental operating standard under Tempe City Code §21-34. Cooling must be under tenant control; shared systems have a manufacturer-specification exception. |
| Tolleson | City of Tolleson | State baseline | No separate numeric private-rental cooling limit located in the published city code. |
| Tucson | City of Tucson | A/C must cool to 82°F or below; evaporative cooling must remain below 86°F | Local housing operating standard under Tucson City Code §16-11. Portable fans or evaporative units may serve only as temporary sole cooling during permanent repair or replacement. |
| Youngtown | Town of Youngtown | State baseline | Local construction and property-maintenance codes still govern safe installation and maintenance; confirm the adopted code edition for renovation work. |
The Most Important Differences Between Arizona Cities
Phoenix, Glendale and Tucson Use Similar Numbers
Phoenix, Glendale and Tucson generally require conventional air conditioning to cool occupied residential space to 82°F or below. Their evaporative-cooling limits are generally 86°F, although Tucson’s code says the temperature must remain below 86°F.
Phoenix’s rule also reaches Ahwatukee and most of Laveen because they are part of Phoenix, not separate cities.
Tempe Gives Evaporative Coolers Two More Degrees
Tempe uses the same 82°F air-conditioning limit but allows evaporative cooling up to 88°F. Eloy uses the same 82°F/88°F combination in its rental-housing code.
Peoria Uses a Wider Temperature Range
Peoria requires habitable spaces to be capable of maintaining temperatures between 70°F and 90°F. Its code expressly says portable cooling equipment cannot be used to achieve permanent compliance.
Scottsdale Uses an 85°F Capability Standard
Scottsdale’s 85°F provision appears in its residential code. That is different from a rental-specific ordinance, but owners should treat 85°F as the local performance target and verify unusual or older-property questions with the city.
Pinal County Can Be Stricter Than Its Incorporated Cities
Arizona City, Gold Canyon and San Tan Valley are unincorporated Pinal County communities. Pinal County’s code amendments call for cooling capable of maintaining 80°F or below.
That county standard should not automatically be applied to incorporated Pinal County cities such as Casa Grande, Coolidge, Eloy, Florence or Maricopa. Those municipalities enforce their own codes.
Do Not Confuse a Building Standard With a Rental Operating Standard
This distinction matters.
A rental operating ordinance directly regulates conditions in an occupied rental. Phoenix, Glendale, Tempe, Tucson and Eloy provide clear examples.
A construction provision generally tells a builder or contractor what a cooling system must be capable of doing when a home is built, substantially altered or permitted. Scottsdale, Apache Junction, Cave Creek, Florence and Surprise have relevant capability language in their building codes.
Depending on the wording and the age of the property, a construction standard may not automatically convert into the same enforcement rule for every legally existing rental. But A.R.S. §33-1324 still requires the landlord to maintain installed cooling and comply with applicable health-and-safety codes.
When a property has an unusual permit history, converted space, an addition or an older evaporative system, the safe approach is to ask the local building or code-enforcement department how its current code applies to that specific structure.
Portable A/C Is Mitigation—not Automatically Compliance
A portable unit can be an important emergency response, but one small unit rarely cools an entire Arizona home.
Several local codes require permanent cooling facilities or prohibit portable equipment as the means of permanent compliance. Tucson allows portable fans or evaporative devices only temporarily while the permanent system is being repaired or replaced.
If a repair cannot be completed immediately, the owner or manager should determine whether temporary equipment can actually keep every affected space within the applicable standard. If it cannot, moving the resident to a vacant unit or arranging reasonable alternative housing may be safer than relying on undersized equipment.
The Spectra West demand followed that logic: repair the system, provide effective temporary cooling or provide alternative housing.
How Arizona Landlords Should Respond to a Cooling Failure
An Arizona summer A/C call should trigger a written emergency process:
- Open a priority-one work order. Record when the resident reported the problem, current room temperatures and any health or disability concerns.
- Dispatch a qualified HVAC vendor immediately. Do not wait for a statutory notice period to expire before investigating.
- Identify the governing jurisdiction. Use the parcel address, not the postal city, subdivision or HOA name, to select the applicable temperature standard.
- Measure the rooms correctly. Where the code specifies a method, measure approximately three feet above the floor in the center of each required room. A thermostat reading alone may not show whether bedrooms, bathrooms and other spaces comply.
- Mitigate while repairs are underway. Deploy properly sized temporary cooling, offer a vacant unit or arrange alternative housing when the permanent system cannot be restored promptly.
- Communicate proactively. Give the resident an honest diagnosis, vendor schedule, mitigation plan and next update time.
- Verify the completed repair. Confirm performance across the home under afternoon load, not only that the unit turns on.
- Preserve the record. Keep work orders, temperature logs, photographs, vendor notes, invoices, resident messages and relocation offers.
This same documentation discipline matters when a utility interruption, not the HVAC equipment itself, removes cooling. Home Ladder’s article on what happens when a power company turns off a rental explains why the owner still needs an operational response even when a third party caused the outage.
Preventing the Next Cooling Emergency
The cheapest cooling emergency is the one that never happens.
Arizona owners should:
- Service HVAC systems before the first extreme-heat period.
- Replace aging capacitors, contactors and other failure-prone components before peak season.
- Track equipment age, refrigerant type, repair history and expected replacement date.
- Budget for complete replacements instead of treating every failure as an isolated surprise.
- Maintain agreements with more than one qualified HVAC vendor.
- Keep an emergency inventory or established source for portable cooling.
- Build a resident-relocation protocol before it is needed.
- Inspect vacant homes and protect condensers and wiring. Copper theft can disable HVAC equipment before a new resident ever moves in.
- Give staff a city-by-city compliance matrix and escalation process.
Owners participating in rental-assistance programs should also check the applicable inspection and contract rules. As our guide to Section 8 in Arizona explains, assisted units can be subject to additional inspections and program standards beyond ordinary state and local law.
The legal stakes are not theoretical. A previous Phoenix heat-death case raised potential landlord-liability questions after an apartment’s air conditioning reportedly failed.
The Bottom Line
Every Arizona landlord has a duty to take cooling seriously, but the exact numeric requirement depends on the property’s jurisdiction.
Phoenix is not Peoria. Tempe is not Scottsdale. A Queen Creek mailing address may not even be inside the Town of Queen Creek. The same HVAC performance can comply in one place and violate the local standard a few miles away.
Owners should know the rule before the emergency, maintain cooling equipment before it fails and respond immediately when it does. A professional Arizona property manager cannot prevent every mechanical failure, but strong vendor relationships, documented emergency procedures and local-code knowledge can keep a routine equipment problem from becoming a habitability crisis.
This article provides general educational information and is not legal advice. Codes, interpretations and property boundaries change. Consult qualified Arizona counsel and the local code official regarding a specific property or dispute.