Noise from Specific Sources in Connecticut (2026)
15 rules on the books across Connecticut, 6 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
HVAC & Mechanical Noise
Noise limits for air conditioners, heat pumps, pool equipment, and other mechanical systems, including decibel thresholds measured at the property line.
New Haven
Some RestrictionsNew Haven has no HVAC-specific noise rule; air conditioners and other fixed mechanical equipment fall under the general…
Read full rule →Norwalk
Some RestrictionsNorwalk caps nighttime noise from residential HVAC equipment, air conditioners, heat pumps and condenser units, at 50…
Read full rule →Bar & Nightclub Noise
Noise regulations specific to bars, nightclubs, and entertainment venues, including bass frequency limits, soundproofing requirements, and complaint procedures.
Bridgeport
Some RestrictionsBridgeport bars and nightclubs must stop exterior liquor-service noise, outdoor dining, entertainment, or speakers, by…
Read full rule →New Haven
Some RestrictionsNew Haven has no bar- or nightclub-specific decibel rule; as commercial-zone noise emitters, they're held to the…
Read full rule →Car Alarm Limits
Maximum duration for car alarms before they must auto-silence, penalties for repeated false alarms, and vehicle towing authority for chronic alarm violations.
Bridgeport
Some RestrictionsBridgeport puts a hard 30 minute cap on car alarms. A burglar or intrusion alarm attached to a motor vehicle that does…
Read full rule →Norwalk
Some RestrictionsNorwalk requires every interior and exterior burglar alarm on a building or motor vehicle to shut itself off within 5…
Read full rule →Stamford
Some RestrictionsStamford exempts sirens and alarm systems from its general noise limits, but any alarm - including a vehicle alarm…
Read full rule →Hartford
Light RestrictionsEmergency sirens and vehicle alarms are otherwise excluded from Hartford's noise limits, but Code § 23-3(e)(3) carves…
Read full rule →New Haven
Light RestrictionsNew Haven exempts emergency and burglar alarms from its general noise limits, but a burglar or car alarm that doesn't…
Read full rule →Generator Noise
Rules for portable and standby generators, including permitted operating hours, decibel limits, and restrictions during non-emergency use.
New Haven
Some RestrictionsNew Haven requires food vendors' generators to be well maintained, meet the city's general noise-level limits, and…
Read full rule →Norwalk
Some RestrictionsNorwalk exempts standby and portable generators from noise limits only during an actual power outage; routine testing…
Read full rule →Waterbury
Some RestrictionsWaterbury requires an effective muffler on any stationary internal combustion engine, including a portable or standby…
Read full rule →Delivery Truck Noise
Time-of-day restrictions on commercial delivery trucks operating in residential zones, including back-up beepers, refrigeration units, and engine idling.
New Haven
Some RestrictionsCommercial haulers and other delivery-type collection vehicles in New Haven must meet the same noise-level standards as…
Read full rule →Waterbury
Some RestrictionsWaterbury bars loud loading or unloading noise from any vehicle and caps engine idling on trucks over 10,000 pounds GVW…
Read full rule →Low-Frequency Bass Limits
Special bass-frequency (≤125 Hz) sound limits for venues, including dB(C) measurement standards and how cities differentiate bass noise from baseline ambient.