Your Air Conditioner Won't Cool? 3 Main Components You Should Check

17 January 2017
 Categories: , Blog


Your air conditioning unit should work to cool the interior of your home. Unfortunately, this may not be the case sometimes. Faults in your AC unit may affect its operational efficiency. This can be frustrating because you not only won't achieve the cool indoor temperatures you desire but you might end up with high energy bills. Therefore, knowing some of the possible culprits is your key to preventing such outcomes. For this reason, here are the top things you should be concerned about when your AC unit won't blow cold air.

The Refrigerant

The first thing you want to check when your air conditioning won't blow cold air is your coolant or refrigerant. The refrigerant acts to transfer your indoor hot temperatures to the outside by flowing through the indoor as well as the outdoor coils. If you are low on refrigerant, less heat will be transferred outside, which means while your unit could be running, it won't properly cool your home. The major cause of low refrigerant levels are leaks so the best way to solve this problem would be to find and fix the leaks first before topping up the refrigerant. Some of the common causes of refrigerant leaks you should look for are leaking valve cores, damaged line sets, corrosion, and damaged capillary tubes.

The Coils

If your refrigerant level is just fine, inspect your condenser coils. Check for dirt or debris accumulation. Usually, these coils operate by absorbing heat from the air inside your home and dissipating it outside. Therefore, if the coils are covered with dirt, they won't be able to do this. This means your unit will be less efficient in cooling your home. You can simply turn off the unit and clean the coils to solve this problem.

The Air Filters

The air filters work by blowing air over the evaporator coils to help cool your home. Damaged and dirty air filters are the major reason your unit won't blow hot air. If the filters are damaged, they may blow inadequate air or fail to blow any air. Your simple solution to this would be to replace them. If they are dirty, the amount of air being blown over the coils will be restricted, which means less heat will be dissipated outside and your unit won't cool your home properly. You are lucky if dirt is the culprit because all you need to do is clean the filters to bring them to back to optimal functioning.