Corona, CA Noise from Specific Sources: Generator Noise (2026)

Generator noise in Corona comes from three main sources: backup generators at homes and businesses, contractor portable generators on construction sites, and recreational use. Permanent standby generators (Generac, Kohler, etc.) installed at homes or businesses require electrical permits, often building permits if pad-mounted, and proper gas connection inspections. Sound levels for residential standby generators typically range from 60-72 dBA at 23 feet, which can exceed Corona's 50 dBA nighttime limit at neighbor property lines without sound enclosures. Best practice for residential installations includes 5-foot setbacks from property lines, placement away from neighbor bedrooms, and acoustic enclosures or factory sound packages. Weekly self-test cycles (typically 5-15 minutes) should be scheduled during daytime hours. During declared emergencies and PSPS power shutoffs by Edison, normal noise restrictions are typically waived to allow extended generator operation. Construction generators must comply with construction noise hours (7 AM-7 PM weekdays, 8 AM-5 PM Saturdays in residential areas) and use of muffler-equipped, modern generators is encouraged. Idling diesel generators on trucks must comply with CARB 5-minute idling limit. Citations may be issued for chronic noise complaints not associated with emergencies.