Bowie, MD Noise from Specific Sources: HVAC & Mechanical Noise (2026)

Bowie's Chapter 13 does not single out air-conditioning condensers or rooftop units by name, but § 13-3.A(12) reaches the blowers and power fans that make up mechanical and HVAC-type equipment. The clause makes it unlawful to operate any "noise-creating blower or power fan" or any internal combustion engine whose operation causes noise from the explosion of operating gases or fluids, unless the blower or fan noise is muffled and the engine carries a muffler device sufficient to deaden the sound. Because the clause sits inside § 13-3.A's broader ban on loud or raucous sound that causes unreasonable annoyance to people living or working nearby, a blower or fan citation still requires that the equipment actually disturb someone in the vicinity, at any hour of the day or night; § 13-3.A applies "at any hour during the daytime or nighttime." Enforcement follows the same two-track rule as the rest of § 13-3: § 13-3.B allows a citation only when a City code enforcement officer personally observes the noise or when the City receives a sworn, affidavit-form complaint signed by at least two witnesses from separate households, each 18 or older with personal knowledge of the violation.

A violation is a municipal infraction under § 13-6, and § 13-6.B makes each hour a running blower or fan noise continues a separate, additional violation, so a continuously operating unmuffled unit can rack up multiple citations rather than one flat fine.