The most vital upkeep job that will guarantee the efficiency of your a/c is to regularly replace or clean its filters. Clogged, filthy filters obstruct normal airflow and minimize a system’s efficiency substantially. With normal airflow blocked, air that bypasses the filter might carry dirt straight into the evaporator coil and hinder the coil’s heat-absorbing capability. Changing an unclean, clogged filter with a clean one can decrease your air conditioning unit’s energy usage by 5 % to 15 %.

For central air conditioners, filters are generally situated somewhere along the return duct’s length. Typical filter places remain in walls, ceilings, heaters, or in the air conditioner itself. Room air conditioners have a filter mounted in the grill that faces into the room.

Clean or replace your air conditioning system’s filter or filters every month or 2 during the cooling season. Filters may require more frequent interest if the air conditioner is in continuous usage, is subjected to dusty conditions, or you have fur-bearing animals in the house.


The air conditioner’s evaporator coil and condenser coil gather dirt over their months and years of service. A clean filter avoids the evaporator coil from soiling quickly.

Outside condenser coils can likewise end up being very unclean if the outdoor environment is dirty or if there is foliage nearby. You can easily see the condenser coil and notice if dirt is collecting on its fins.

You should minimize dirt and debris near the condenser unit. Your dryer vents, falling leaves, and lawn mower are all potential sources of dirt and debris. Cleaning the area around the coil, removing any debris, and trimming foliage back at least 2 feet (0.6 meters) permit appropriate airflow around the condenser.


The aluminum fins on evaporator and condenser coils are quickly bent and can obstruct airflow through the coil. Air conditioning wholesalers sell a tool called a “fin comb” that will comb these fins back into nearly original condition.


Occasionally pass a stiff wire through the unit’s drain channels. Clogged drain channels prevent a unit from lowering humidity, and the resulting excess moisture may discolor walls or carpet.


At the start of each cooling season, inspect the seal between the air conditioner and the window frame to ensure it makes contact with the system’s metal case. Moisture can damage this seal, allowing cool air to escape from your house.


In the winter, either cover your room ac unit or remove and store it. Covering the outside unit of a central air conditioner will protect the unit from winter weather and debris.


When your air conditioner needs more than routine upkeep, work with a professional service specialist. A well-trained professional will find and take care of problems in your air conditioning system.

During your routine A/C service, you expert appliance professional should:

  • Look for correct amount of refrigerant
  • Test for refrigerant leaks using a leak detector
  • Capture any refrigerant that must be evacuated from the system, instead of illegally releasing it to the environment
  • Check for and seal duct leak in main systems
  • Measure airflow through the evaporator coil
  • Verify the correct electric control sequence and make certain that the heating unit and cooling system can not operate all at once
  • Check electrical terminals, clean and tighten up connections, and use a non-conductive finishing if essential
  • Oil motors and check belts for tightness and wear
  • Inspect the precision of the thermostat.

Our experts will do all of the above, and more! Contact a McIver appliance specialist today!