Pinal County, AZ Noise from Specific Sources: HVAC & Mechanical Noise (2026)
Key Facts
- Exempt if
- Running per manufacturer specs
- Exemption lost if
- Unit exceeds Table 1 dBA limit
- Governing section
- Pinal County Code § 10-27(1)
- Applies to
- Unincorporated county only
- Penalty for exceeding limit
- Up to $750 per day
Summary
Unincorporated Pinal County exempts properly functioning heating and cooling equipment from its noise ordinance, but the exemption in County Code Section 10-27(1) only holds as long as the unit does not create noise that exceeds the Table 1 ambient limit for its zoning district under Section 10-24.
The following uses and activities shall be exempt from the provisions contained in this chapter: (1) Heating and cooling equipment when it is functioning in accordance with the manufacturer's specifications and is in proper operating condition provided that no unit may create an excessive noise pursuant to table 1 of section 10-24;
Full Breakdown
The exemption applies when equipment 'is functioning in accordance with the manufacturer's specifications and is in proper operating condition,' language that describes a stock air conditioning condenser, heat pump or evaporative cooler running as designed. The moment a unit is worn, poorly mounted, or otherwise generates noise above the applicable Table 1 ceiling for its zoning district, it loses the exemption and becomes an excessive-noise violation enforceable under Section 10-21. HVAC is one of fourteen exemptions listed in Section 10-27, alongside landscape equipment (conditioned on similar mechanical-condition language and functioning mufflers), emergency vehicles, railroad trains, agricultural equipment, and aircraft operated under federal air regulations, so the county did not single HVAC out for special leniency; every mechanical exemption in the list is conditional rather than absolute. The chapter applies only within the unincorporated county under Section 10-19, and was adopted under the board of supervisors' police power in A.R.S. Section 11-251(31) and its ordinance authority in A.R.S. Section 11-251.05.
Violations & Fines
If an HVAC unit exceeds the Table 1 limit, it forfeits the Section 10-27(1) exemption and is treated as any other excessive-noise violation: a public nuisance enforceable under Section 10-28, chargeable as a Class 1 misdemeanor disorderly-conduct offense under A.R.S. Section 13-2904, or pursued as a civil infraction fined up to $750.00, with each day of continuing noise a separate violation. A damaged neighbor may also seek an injunction or abatement order.
Frequently Asked Questions
Is my air conditioner exempt from the county noise ordinance?
What if a neighbor's HVAC unit is unusually loud?
Do other mechanical systems get the same exemption as HVAC?
Does this exemption require a permit?
Sources & Official References
Other rules in Pinal County
Compare Pinal County to another location·View the Arizona noise from specific sources overview
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