Troubleshooting Guide For An Air Conditioner That Won't Blow Cold Air

Is your home's air conditioning system not blowing cold air? If so, it needs to be checked to determine the cause of the problem. Otherwise, the unit will only waste energy and money. Many factors can cause your residential AC to stop cooling. Use these troubleshooting tips to establish where the problem may lie. 

Check The Power

Air conditioners require electricity to operate. If your AC unit isn't turning on, this means the unit isn't getting any power supply at all. Usually, something may have tripped the circuit breaker or there might be a blown fuse or disconnected wiring. 

If you can't get the unit powered up, you might need to enlist the help of a professional to identify and fix the problem. Your air conditioner is made up of several electrical components and any of them could lead to the unit not powering up.

Check Your Thermostat

If your AC system is turning on but not blowing cold air, you should check the thermostat settings. The thermostat is a temperature-control device that is used to dictate the desired temperature range within the rooms of a house. If it is set incorrectly, the air conditioning system won't cool the indoor air to the desired temperature level.

If your thermostat setting is incorrect and the thermostat isn't broken, you can fix the problem by simply adjusting the temperature setting to the recommended level for your region.

Check Your Air Filter

When was the last time you changed your air conditioner's air filter? If you haven't replaced the air filter recently, it might be the reason why your air conditioner isn't blowing cold air. Air filters become dirty from all the debris they catch during normal AC operation. When this happens, they tend to impede the proper flow of air within the AC system. This results in inadequate airflow, which in turn undermines your AC unit's cooling ability.

Fortunately, a dirty air filter requires an easy fix. You simply need to remove it and replace it with a compatible product. The air filter is typically located in the return air duct of your AC system but for exact instructions on its location, you can always consult your air conditioner owner's manual.

Several factors other than the ones highlighted above can cause your air conditioning system not to blow cold air. If you can't fix the problem yourself, your local AC contractor is always ready to help. Contact an AC contractor for more information.