Chicago Municipal Code Section 8-32-090 sets specific decibel limits for mechanical stationary sources including HVAC equipment. Between 8 PM and 8 AM, sounds cannot exceed 55 dB(A) measured 100 feet from the source or 70 dB(A) measured 10 feet from the source. The Chicago Department of Public Health enforces these standards.
Chapter 8-32 of the Chicago Municipal Code (Noise and Vibration Control) regulates HVAC and mechanical equipment noise under Part B, Section 8-32-090 (Limitations on Noise from Mechanical Stationary Sources). Mechanical stationary sources are defined to include air handling units (air conditioners, ventilation fans, exhaust fans) and refrigeration equipment. Between 8 PM and 8 AM, these sources cannot produce sounds greater than 55 dB(A) measured 100 feet from the source, or 70 dB(A) measured 10 feet from the source. During daytime hours (8 AM to 8 PM), slightly higher levels are permitted. The regulation applies to all HVAC equipment on residential and commercial properties, including central air conditioners, heat pumps, rooftop units, and pool equipment. The Chicago Department of Public Health (CDPH) Department of Environment enforces noise regulations and may conduct sound level measurements in response to complaints. Property owners may be required to install sound barriers, relocate equipment, or replace noisy units to achieve compliance.
Violations of Section 8-32-090 may result in fines. The Department of Public Health may order corrective action including installation of sound barriers or equipment replacement. Continued non-compliance leads to escalating fines and potential legal action.
Chicago, IL
Chicago Building Code Chapter 13-196 requires approved smoke alarms in every residential unit: at least one on each story (including basement), within 15 fee...
Chicago, IL
Chicago has no ordinance specific to residential lawn ornaments, statuary, or year-round decorations. Landmark Commission approval is required only for perma...
Chicago, IL
Chicago has no ordinance specific to residential holiday inflatables. Inflator-motor noise after hours is enforced under MCC Section 8-32 (noise), and sidewa...
Chicago, IL
Chicago has no ordinance regulating residential holiday light display windows or brightness. Property maintenance complaints are handled under MCC Section 13...
Chicago, IL
Chicago requires Department of Buildings permits for outdoor kitchens with gas piping, electrical wiring, or plumbing under MCC Chapter 14A. Trade work must ...
Chicago, IL
Chicago has no ordinance specifically regulating residential smokers or wood-fired ovens. Smoke nuisance is enforced under Chicago Municipal Code Section 11-...
See how Chicago's hvac & mechanical noise rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.