5 Reasons Why Your Air Conditioner Is Not Cooling

October 28, 2020
Read 5 reasons why your air conditioner is not cooling

We often receive enquiries regarding malfunctioning of air conditioners, and one of the most frequently asked questions is why the air conditioner is not cooling enough or why it is blowing hot air and not cold.

In the hot and humid weather conditions of Singapore, we rely heavily on air conditioners to cool our living spaces. Therefore, air conditioners not cooling well can not only be a matter of frustration and inconvenience, but also of survival.

There are at least five reasons that we can think of why your air conditioner is probably not cooling enough:

Incorrectly Set Thermostat

Many of us make this mistake and wait for the air conditioner to cool on end. Always check the AC fan settings. If it is turned ‘ON’, the blower will keep running without cooling your home. Instead change the settings to ‘AUTO’ on your thermostat. This will employ the blower only when the compressor is running. Consequently, the blower will turn ‘OFF’ when your room reaches the desired temperature. Thus, you will save on utility bills too.

Clogged Air Filter

Air filters that are not cleaned periodically traps airborne particles causing the air conditioning system to wear out. As you may know, dust, dirt, dander etc. trapped in the air filter block free movement of air. It also restricts the amount of warm air that flows over the indoor evaporator coil. The refrigerant moving through the coil thus freezes and becomes chilled blocking the air flow. 

Low Refrigerant

You might be wondering what a refrigerant is! Well, refrigerant is a compound fluid in air conditioning systems that converts warm air into cold air. It shifts from low-pressure gas to high-pressure liquid as it moves between indoor evaporator coil and outdoor condensing unit. The refrigerant is responsible for cooling your room when you set the desired temperature on the thermostat.

Leaking refrigerant causes the evaporator coil to freeze blocking the airflow. If there’s a leak, you will probably hear hissing or bubbling noise from the air conditioner, ice crystals forming outside the refrigerant line, water leaking from the unit or air conditioner not cooling enough during the day but works fine at night. 

Unclean Condenser Unit

A condenser unit is the outdoor piece of your air conditioning system As the indoor evaporator absorbs hot air from inside and transfers to the outside air conditioning unit, the condenser turns the hot air into cold and blows it back to your room. Clean outdoor units regularly to remove cobwebs, debris or bushes that grow around them to ensure smooth flow of air.

Faulty Condenser Fan or Compressor

The condenser unit has a huge fan on the top. Make sure it is spinning without fail. If the fan motor fails to run, the condenser unit will not exhaust hot air properly, thus recirculating the warm air back to your room.

It is also important to diagnose the working of compressors. Compressor is the heart of your air conditioner. The main function of the compressor is to cool the refrigerant. Experts say if the compressor breaks down then it is time to get a new air conditioner.

Sendhelper Aircon Servicing and Maintenance

Whether you wish to troubleshoot and service your air conditioners to fix immediate problems or sign-up for attractive subscriptions plans for periodic maintenance to keep the health of air conditioners in check, Sendhelper provides the best air conditioning solutions for you. Download the Sendhelper app and book aircon servicing now.

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