furnace MAINTENANCE CHECKLIST

Air Filter  

☐ Change air filter every 1-2 months  

Burners & Flame Sensor  

☐ Vacuum out debris around burners  

☐ Inspect burners for cracks  

☐ Clean debris out of transition channels (if applicable)  

☐ Clean burner manifold orifices  

☐ Scrub off build-up from flame sensor  

Heat Exchanger  

☐ Visually inspect heat exchanger for cracks  

☐ Perform match test (if needed)  

☐ Test carbon monoxide (CO) detector every month  

Blower & Inducer Fans  

☐ Check that fan wheel spins freely  

☐ Inspect and replace fan belt (if needed)  

☐ Oil fan motor  

Humidifier  

☐ Clean or replace humidifier pad  

☐ Adjust humidifier damper if changing seasons  

Electrical & Controls  

☐ Inspect for loose wires and rusty terminals  

☐ Clean/dust out electrical enclosure area  

Thermostat  

☐ Test thermostat fan speeds (if applicable)  

☐ Test & calibrate thermostat temperature  

☐ Adjust thermostat schedule (if applicable)  

Ductwork  

☐ Inspect ductwork for mold & leaks