Short answer
During a heat wave, keep blinds closed, set the thermostat to a steady moderate temperature instead of very low, keep the filter clean and the condenser clear, and avoid running heat-producing appliances in the afternoon. If the AC stops, turn it off, check breakers and the filter, and call a technician early in the day.
Reduce load
Shade windows, cook outside or early, and run dryers at night.
Steady settings
Very low setpoints do not cool faster; they just keep the system running nonstop.
Not sure it is safe to keep running? A local technician can check it today.
Call NowIf it stops
Turn it off to let any ice thaw, check breakers and the drain switch, then call.
Related questions
Why does my AC struggle in heat waves?
Most systems are sized for a typical hot day, not extreme peaks.
Should I hose my condenser on hot days?
A gentle rinse to clean it is fine; spraying a running unit does little.
Services that fix this
Emergency AC Repair
No cooling during a heat wave, burning smells, or a system that keeps tripping breakers.
Emergency AC repair in Fountain Valley
Central AC Repair
Systems that will not start, will not cool, freeze up, short-cycle or leak water.
Central AC repair in Fountain ValleyThis guide is general information for homeowners, not a diagnosis of your system. For anything involving gas, carbon monoxide, electricity or active leaks, stop and call a qualified professional.
