Noise from Specific Sources in Manchester, NH

Every city handles noise from specific sources a little differently. In Manchester, New Hampshire, there are 5 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Bar & Nightclub Noise

Manchester bars and nightclubs can't run music or sound systems that stay plainly audible 50 feet past the property line between 11 p.m. and 7 a.m.: that alone is treated as proof of a violation.

Key details: Audibility standard: plainly audible 50 ft from lot line. Restricted hours: 11:00 p.m. to 7:00 a.m.. Enforcement: Police Chief or designee. First offense fine: $100. Fourth+ offense fine: $1,000.

Each violation, and each day it continues within a calendar year, is a separate offense: $100 first offense, $250 second, $500 third, $1,000 for a fourth or later offense.

Delivery Truck Noise

Manchester caps motor vehicle noise, including delivery trucks, at 80 dBA measured 25 feet away, enforced at any time under the noise ordinance's Table B standard.

Key details: Max noise level: 80 dBA at 25 feet. When it applies: any time, day or night. Covered vehicles: under 10,000 lbs GVW. Enforced by: Police Chief or designee. Penalty range: $100 to $1,000, escalating.

Operating a delivery truck over the 80 dBA/25-foot limit is a § 94.42(H) violation: $100 for a first offense, $250 second, $500 third, and $1,000 for a fourth or later offense in the same year.

Car Alarm Limits

Manchester exempts vehicle alarms from its burglar-alarm permit system unless the vehicle sits permanently at one site, but any noise a triggered car alarm makes must still stay within the city's 80-decibel motor vehicle noise cap.

Key details: Permit for a personal car alarm: Not required. Vehicle noise cap: 80 dBA at 25 feet. First-offense fine: $100. Repeat-offense fine (4th+): $1,000. Enforcing agency: Manchester Police Chief.

Exceeding the 80 dBA vehicle noise cap is cited under § 94.42(H)/94.43: $100 first offense, $250 second, $500 third, $1,000 for a fourth or later offense in one calendar year.

Generator Noise

Manchester exempts emergency power generators at hospitals, clinics, and nursing homes from standard noise limits, but caps routine testing noise at 88 dBA and restricts testing to set hours and durations.

Key details: Testing noise cap: 88 dBA at property line. Testing duration limit: 1 hr/week or 2 hrs/6 weeks. Allowed testing hours: 10:00 a.m.–4:00 p.m.. First-offense fine: $100. Enforcement: Chief of Police (§ 94.04).

Enforced by the Chief of Police under § 94.04. Exceeding the exemption is prosecuted under § 94.42/94.43: $100 first offense, $250 second, $500 third, $1,000 fourth and subsequent, per day.

HVAC & Mechanical Noise

Manchester gives air conditioners, heat pumps, and other fixed mechanical equipment no special exemption: they're held to the city's baseline property-line noise limits, capped at 55 dBA daytime and 50 dBA nighttime for residential sources heard at a residential receptor.

Key details: Daytime limit (residential): 55 dBA, 7 a.m.–10 p.m.. Nighttime limit (residential): 50 dBA, 10 p.m.–7 a.m.. Measured at: property line of receiving premises. First-offense fine: $100 citation. Enforcing agency: Manchester Police Department.

Exceeding the Table A limit at the property line violates § 94.42(C). Fines run $100 first offense, $250 second, $500 third, $1,000 for a fourth or later offense: each day counts as a separate violation.

The Bottom Line

Manchester's noise from specific sources rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Manchester is broadly strict or permissive.

Keep in mind that Manchester can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.