|Think of preventative HVAC maintenance in the same way as the preventative maintenance for your car: If you don’t change your engine oil and replace belts and filters, the engine will lock up and the vehicle won’t operate. The same holds true, in a sense, for HVAC systems. Preventative maintenance on your HVAC system is a great way to tackle unforeseen issues.|
Inspect unit for proper refrigerant level and adjust if necessary
Clean dirt, leaves and debris from inside cabinet
Inspect base pan for restricted drain openings—remove obstructions as necessary
Inspect coil and cabinet—clean as needed
Inspect fan motor and fan blades for wear and damage
Inspect wiring and connections.
Controls may include contactors, relays, circuit boards, capacitors, wiring and other accessories.
Inspect and clean blower assembly (includes blower housing, blower wheel and motor)
Check combustion blower housing
Inspect evaporator coil, drain pan and condensate drain lines.
Inspect burner assembly and gas leaks in gas furnaces
Inspect ignition system and safety controls
Inspect heat exchanger for cracks or busted areas
Inspect flue system—check for proper attachment to the furnace, any dislocated sections, and for signs of corrosion.
Clean or replace air filters
Inspect duct work—check for leaks
|While Your System Is Operating|
Listen for abnormal noise
Search for source of unusual odors
Monitor air conditioning and heat pump systems for correct refrigerant charge
Measure outdoor dry bulb temperature as well as indoor dry and wet bulb temperature
Monitor gas furnace for correct line and manifold gas pressure—make adjustments as needed
Measure temperature rise and adjust airflow as needed
Provide system operation report and recommend repairs or replacement as necessary