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Air Conditioner Maintenance Checklist

Conduct maintenance on central air conditioner units at least once a year, preferably before its use in the Spring. Make sure all electrical connections are intact, lubricate moving parts, and replace air filters as needed. Keep cooling systems up and running in commercial and residential buildings.

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Air Conditioner Maintenance Checklist


Air Conditioner check

Check and adjust thermostat.
Check the condenser coil to determine if it needs cleaning.
Check all wiring and electrical connections to controls.
Check blower belt wear, tension, & adjust.
Check voltage & amperage draw on all motors with a meter.
Check compressor contactor.
Visually inspect compressor and check amp draw.
Check start capacitor & potential relay.
Check pressure switch cut-out setting.
Replace air filter or clean reusable type filter.
Install gauges & check operating pressures.
Check refrigerant (freon) level and advise if adjustments are necessary.
Check condensate drain and pan then report any discrepancies.
Check expansion valve & coil temperatures.
Lubricate parts as needed.
Check evaporator coil and clean if dirty.


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