Los Banos, CA Noise from Specific Sources: HVAC & Mechanical Noise (2026)
Key Facts
- Existing system limit
- 55 dBA exterior
- System installed after Dec. 4, 1987
- 50 dBA exterior
- Measurement method
- A-weighted meter within 50 feet
- Variance available
- Via Planning Commission, § 9-3.2711
- Governing section
- Municipal Code § 9-3.2707
Summary
Los Banos sets a stricter decibel cap for home air-conditioning and refrigeration equipment than its general noise table. An existing residential AC or refrigeration system cannot exceed 55 dBA measured outside, and any such system installed after December 4, 1987 must stay at or under 50 dBA.
Notwithstanding the provisions of Section 9-3.2704 of this article, where the intruding noise source when measured as provided in said Section 9-3.2704 is an existing residential air-conditioning or refrigeration system or associated equipment, the exterior noise level shall not exceed 55 dBA. For residential air-conditioning or refrigeration systems or associated equipment installed after December 4, 1987, the exterior noise level when measured as provided in said Section 9-3.2704 shall not exceed 50 dBA.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4356507; v3 updated 2025-03-05).
Full Breakdown
2704 and gives it its own fixed ceiling instead of the sliding, time-based standard that applies to other fixed noise sources. An existing system, one already installed before the article's December 4, 1987 effective date, is capped at 55 dBA measured using the same method as the general table: an A-weighted sound level meter at slow response, taken within 50 feet of the affected property. Any residential AC or refrigeration system, or its associated equipment such as compressors and condenser fans, installed after that date must meet a tighter 50 dBA ceiling.
2707's two flat numbers, which override the table specifically for AC and refrigeration equipment. 2711, which requires a written noise control program describing the mitigation already completed and what remains, a filing fee set by the Council, and a public hearing with notice mailed to property owners within 300 feet.
Violations & Fines
An AC or refrigeration system that exceeds the 55 or 50 dBA ceiling is enforced the same as any other noise violation under Section 9-3.2712: a misdemeanor or infraction, a public nuisance subject to Superior Court injunction, and inspection by the City's designated Enforcement Officer.
Frequently Asked Questions
How loud can my air conditioner be in Los Banos?
Does the regular noise decibel table apply to my AC unit?
Can I get relief if my AC unit exceeds the noise limit?
Sources & Official References
Other rules in Los Banos
California rules heatmap·Compare Los Banos to another location·View the California noise from specific sources overview
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