Noise from Specific Sources in Maricopa County, AZ (2026)
5 county-level rules, plus city-specific rules for 7 cities in Maricopa County, Arizona.
Verified from official government sources
HVAC & Mechanical Noise
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.
Maricopa County HVAC Equipment Noise Rules
Light RestrictionsMaricopa County Ordinance P-23, Exemptions
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.
Bar & Nightclub Noise
In unincorporated Maricopa County, it's illegal to run a bar or nightclub's radio, loudspeaker, or sound amplification equipment so loudly it can be heard inside a closed home within 500 feet of the property line.
Maricopa County Bar & Nightclub Noise Limits
Some RestrictionsMaricopa County Ordinance P-23 (Noise Ordinance), "Radios and Sound Amplification Devices"
It shall be unlawful for any person to operate any radio, loudspeaker, musical instrument, or other sound producing, sound reproducing, or sound amplification equipment which emits 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.
Car Alarm Limits
In unincorporated Maricopa County, a car alarm or other warning device is exempt from Ordinance P-23's noise ban only if it doesn't sound continuously for more than thirty minutes per incident; run past that mark and the owner faces the same misdemeanor citation as any other loud-noise complaint under the county's Noise Ordinance.
Maricopa County Car Alarm Noise Exemption
Some RestrictionsMaricopa County Ordinance P-23 (Noise Ordinance), Exemptions; Administration & Enforcement; Penalty
Noise emanating from alarms and other warning devices not operated continuously for more than thirty minutes per incident... The administrator is authorized to provide violators with a written warning that the offending noise must cease within a specified period of time. If the offending noise does not cease within the administrator's identified timeframe, the person in violation of this ordina...
Generator Noise
Maricopa County's noise ordinance bans generator noise reaching neighboring homes: if generator sound is audible from inside a closed residential structure within 500 feet of your property line in unincorporated areas, it's a violation.
Generator Noise Rules in Maricopa County
Some RestrictionsMaricopa County Ordinance P-23, "Public Disturbances"
It shall be unlawful for any person to cause, or for any person in possession of property to allow to originate from the property, any noise which disturbs the peace or quiet of any neighborhood if such noise can be heard from within closed residential structures located within 500 feet of the boundary of the property from which such noise emanates.
Low-Frequency Bass Limits
In unincorporated Maricopa County, amplified music and bass-heavy stereo or speaker noise is illegal once it can be heard inside a closed residential structure within 500 feet of the source: no decibel meter required.
Maricopa County Amplified Sound and Bass Rule
Some RestrictionsMaricopa County Ordinance P-23, "Radios and Sound Amplification Devices" (Noise)
It shall be unlawful for any person to operate any radio, loudspeaker, musical instrument, or other sound producing, sound reproducing, or sound amplification equipment which emits 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.
Noise from Specific Sources by City in Maricopa County
7 cities in Maricopa County have their own noise from specific sources rules. Each link goes to that city's dedicated page with code citations.
1 verified rule • Delivery Truck Noise
2 verified rules • Generator Noise, HVAC & Mechanical Noise
2 verified rules • HVAC & Mechanical Noise, Low-Frequency Bass Limits
1 verified rule • Bar & Nightclub Noise
4 verified rules • Bar & Nightclub Noise, Car Alarm Limits
2 verified rules • Bar & Nightclub Noise, HVAC & Mechanical Noise
3 verified rules • Bar & Nightclub Noise, Generator Noise
All Maricopa County ordinances
See every category we cover for Maricopa County: parking, noise, fences, fires, animals, pools, and more.
Maricopa County Ordinance Hub →