Oklahoma City, OK Noise from Specific Sources: HVAC & Mechanical Noise (2026)
Key Facts
- Governing law
- OKC Municipal Code § 34-6
- Nighttime residential limit
- 50 dBA, 10 p.m.–7 a.m.
- Daytime residential limit
- 55 dBA, 7 a.m.–10 p.m.
- Industrial zone limit
- 70–80 dBA any time
- First offense
- Class "a" municipal offense
Summary
Oklahoma City treats air conditioners and other fixed HVAC units as "stationary sources of sound," capping how loud they can run measured at the property line under Chapter 34's noise code.
It shall be unlawful for any person to operate or to permit to be operated any stationary source of sound which... creates a unit percentile sound level (L1) greater than 15 dB(A), above its ambient sound pressure level (L90) limit... "Stationary source of sound" means a device which creates sound while fixed in position, including but not limited to residential, commercial, industrial or agricultural machinery, pumps, fans, compressors, air conditioners and refrigeration equipment.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 5 Update 1).
Full Breakdown
Section 34-6 of the Oklahoma City Municipal Code names air conditioners, compressors, fans and refrigeration equipment as a "stationary source of sound" and bans running one that pushes the L1 sound level more than 15 dB(A) above the ambient L90 level, or that exceeds the L90/L10 caps set out in Table I (Section 34-12) for the property's zoning district and time of day: as low as 50 dBA overnight in residential zones, up to 80 dBA in industrial zones. The City Manager's enforcement officer can issue an abatement order requiring the noise be fixed within a reasonable time.
Violations & Fines
First offense is a Class "a" municipal offense; a second or later HVAC noise offense under Chapter 34 becomes a Class "b" offense, with each continuing day of violation counted separately.
Frequently Asked Questions
Can my neighbor's air conditioner violate Oklahoma City's noise code?
What decibel limit applies to HVAC noise at night in an OKC residential zone?
Sources & Official References
Other rules in Oklahoma City
Compare Oklahoma City to another location·View the Oklahoma noise from specific sources overview
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HVAC & Mechanical Noise in Nearby Cities
How other cities in this county handle hvac & mechanical noise.