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Home Maintenance Topics

2-10 Maintenance Guide / Systems Maintenance / Air Conditioner Maintenance

Systems Maintenance

Air Conditioner Maintenance

To verify proper operation
Every 1-3 months
  • Replace air filter regularly based on manufacturer’s recommendation.
  • Turn on system only when outside air temperature is greater than 60 degrees Fahrenheit.
  • Set thermostat to desired temperature or to a temperature slightly higher than normal if away from home during the day. This will allow for quicker cooling to your desired temperature at night rather than trying to cool a hot house.
  • If air conditioner does not operate, check thermostat is set to “COOL” setting. If that doesn’t help, check the circuit breakers.
    • There are two: one that controls the compressor and one that controls the fan. Verify that both are in the “ON” position.
    • If either is tripped, switch it to the “OFF” position then to the “ON” position.
    • If that doesn’t work, call a qualified HVAC contractor for assistance as necessary.
  • If the system is operating properly, ensure that the condensation drain tube is draining water and is unobstructed. This is usually a clear plastic tube located next to the heat pump which drains into a floor drain or to the outside.
  • Verify that the outside compressor unit operates free and clear of any debris.
  • Remove any protective cover left on the unit over the winter.
  • Consider installing ceiling fans where desirable. They help with air circulation and enable the system to operate more efficiently.
  • Reduce sunlight entering your home during the hottest parts of the day.
  • Make sure all cooling and return air vents are clean, clear, and unobstructed.
  • Set air vent vanes upward on lower floors and slightly downward on upper floors.
  • Air blowing from the vents should be noticeably cool. If not, there may be a refrigerant leak somewhere. Consult with a qualified HVAC contractor as necessary.