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Window AC Units Won't Cool Properly? Here Are Some Things You Can Do To Stay Cool

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If your window air conditioning units fail to cool your home, take steps to solve your issues now.  Although window units can be cost-effective ways to cool certain areas of the home, the appliances can experience problems, such as blocked condenser and evaporator coils, that keep them from doing so. Your rooms may feel hotter as a result. The heat may also increase the humidity in your house. High humidity can make it feel or appear hotter than it actually is. You can take steps to improve the cooling functions of your window units with the tips below.

Clean Your Window Units' Condenser and Evaporator Coils

If you haven't done so already, take time to clean the condenser coil and evaporator coil on each unit. The condenser coil is the large, flat piece located on the backside of the units. The condenser coil turns hot gas refrigerant into liquid and ejects heat from the unit. The evaporator coil looks similar to the condenser coil but sits in the front of the unit, just behind the air filter. It cools down liquid refrigerant and sends cool air into the room. Dust, dirt and other debris can build up on both parts every summer and keep fresh air from flowing through them. Cleaning the evaporator coil and condenser coil helps improve the unit's cooling.

Before you remove the units, make sure to turn off their power and unplug them from their wall outlets. Now, follow the instructions below:

  1. Place a unit on a wide-surfaced table. 
  2. Use a Phillips screwdriver to remove the screws that hold the back and front cabinets in place. Place the screws in your pocket or a small cup to keep from losing them.
  3. Turn a water hose on low. The water should gently flow out the hose's nozzle. 
  4. Run the hose over the condenser coil's surface until all signs of debris wash away.
  5. Repeat step four with the evaporator coil.

If the surfaces of both coils still appear soiled with dirt, use a soft-bristled toothbrush to clean them. But don't apply any pressure to the surfaces or you might damage them. Allow the unit to dry, then reassemble the cabinets. Place the cleaned AC back into its window before cleaning the rest of your air conditioners.

After you complete the steps above, return power to each unit. Set the thermostats on the units to a temperature that makes you feel comfortable, then wait for the rooms to cool down. If the rooms feel cooler, you solved the problem. If the rooms still feel hot and uncomfortable, you can try one more thing to stay cool.

Dehumidify Your Home

Sometimes, reducing the humidity levels in your home can help improve the functions of an air conditioner. One way to do this is to use a dehumidifier, which cools down hot or warm air by removing water vapor from it. Water vapor describes water when it turns to a gas.

You have several options to dehumidify your home. You can use a portable system for each room, or you can select a whole-house system. A whole-house system may be better for you because it can dehumidify multiple rooms all at once. If you select a portable system, you may need to take the equipment from room to room to bring down the humidity in your home.

Sources recommend that you keep your home's humidity levels between 30 to 50 percent in warm weather. To avoid problems, you may want to use a dehumidifying system that comes with electronic sensors. The sensors detect when the humidity in your home rises beyond 30 to 50 percent. The sensors then alert the system, which cycles on until the air becomes comfortable again.

If you have any concerns about your window units or need further assistance to cool your home, contact an air conditioning contractor like Kohl Heating & Air Conditioning today.


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