Maintenance

Heating & Cooling Maintenance Programs at Your Convenience

Routine maintenance is key to preventing unexpected HVAC issues and ensuring your systems perform at their best. At Missouri Furnace & Air Conditioning, we offer comprehensive maintenance services throughout St. Louis and St. Charles counties, designed to keep your residential and commercial HVAC systems running efficiently. Our expert technicians will help you avoid breakdowns and maintain a comfortable home or workspace.

Our Maintenance Service Includes:

Heating Check:

Check the indoor air filter.
Oil indoor blower motor (if needed, oilable).
Check the indoor blower motor V-belt and tension.
Check the indoor thermostat for proper operation.
Check for visible signs of poor electrical connections.
Check the indoor blower wheel for dirt and balance.
Check the flue pipe for proper draft and safe operation.
Check the gas valve for proper operation.
Check the fan & limit switch and all safety controls.
Check heat exchangers for safe operation.
Check the control transformer's output voltage and/or FLA.
Check indoor blower motor bearings & shaft, and capacitor.
Check the indoor blower motor amp draw.
Check the main burners for proper ignition and burning flame.
Cycle & check out electronic ignition controls.
Cycle & check combustion air I induced draft blower.
Check for proper operation of the draft blower.
Check the thermocouple for proper operation.
Check the pilot flame for a proper burning flame.
Check the safety of the blower door switch and furnace covers.

Cooling Check:

Check operating head pressure, suction pressure, and superheat.
Check the condenser for coil blockage and clean the same.
Check compressor starting and running amps.
Ensure starting devices are not pitted or burnt and function properly.
Inspect accessible areas for signs of leaks and rust.
Ensure the refrigeration charge is correct.
Check hi-pressure & low-pressure safety controls if applicable.
Oil condenser fan motor. Ensure that the outdoor fan blade is free of vibration and not bent. Check running amps & for overheating.
Ensure all installed time delays function properly.
Inspect the thermostat for proper operation.
Check the indoor air filter.