Noise from Specific Sources in Longmont, CO (2026)

1 verified noise from specific sources rules for Longmont, Colorado, sourced directly from the municipal code and official government pages.

Verified from official government sources

HVAC & Mechanical Noise

Longmont does not have a dedicated HVAC noise ordinance. Air conditioners, heat pumps, and pool equipment are regulated as fixed noise sources under the general decibel limits in LMC § 10.20.110: 50 dB(A) residential at night and 55 dB(A) residential during the day, measured 25 feet from the unit.

Longmont HVAC Equipment Noise

Few Restrictions

Full ordinance details →Official source ↗

Looking for Boulder County county-wide rules?

County ordinances apply to unincorporated areas and may supplement Longmont city rules.

Noise from Specific Sources in Boulder County →