Maricopa County, AZ Noise from Specific Sources: HVAC & Mechanical Noise (2026)
Key Facts
- Governing law
- Maricopa County Ordinance P-23 (Noise)
- HVAC/pool pump noise
- Exempt when run per specs
- Audibility condition
- Can't be heard inside home 500 ft away
- Scope
- Unincorporated Maricopa County only
- Penalty if exemption lost
- $300-$750 misdemeanor fine, escalating
Summary
In unincorporated Maricopa County, noise from heating and cooling equipment and pool pumps is exempt from the county noise ordinance if it operates per manufacturer specs and can't be heard inside homes within 500 feet.
Noise emanating from mechanical devises associated with heating and cooling equipment and pool pumps when functioning in accordance with manufacturer's specifications and is in proper operating condition, and that no units emit noise that can be heard from within closed residential structures located within 500 feet of the boundary of the property from which such noise emanates.
Full Breakdown
Maricopa County's noise ordinance, P-23, bars noise audible inside a closed residence within 500 feet of the source, but carves out an explicit exemption for mechanical noise from heating and cooling equipment (HVAC) and pool pumps. The exemption applies only while the unit runs in accordance with the manufacturer's specifications and is in proper operating condition, and only if no unit's noise carries into a closed residential structure within 500 feet of the property line. A malfunctioning or excessively loud condenser or pool pump loses the exemption and falls under the general noise-disturbance ban, enforceable as a misdemeanor. The ordinance applies only in unincorporated areas of the county.
Violations & Fines
Losing the HVAC exemption puts a unit under the general noise ban: a misdemeanor with fines up to $300 first offense, $500 second, $750 third and beyond, each day a separate violation.
Frequently Asked Questions
Do I need a permit for a new AC condenser or pool pump in unincorporated Maricopa County?
What if a neighbor's air conditioner is unusually loud?
Sources & Official References
Other rules in Maricopa County
Compare Maricopa County to another location·View the Arizona noise from specific sources overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.