Things That Can Interfere With Airflow Through Your AC

4 May 2022
 Categories: Construction & Contractors, Blog


If your AC is running but it isn't putting out much cool air, there is probably an airflow problem of some sort. If there isn't enough air coming out of the ducts, your home won't be able to cool down, and your AC may run longer and drive up your electric bill. Here are things that might cause an airflow issue with your air conditioner.

The Filter Is Clogged

A clogged filter is a very common reason for poor airflow through your AC. It's always a good idea to check the filter first when your AC malfunctions. By changing the filter, you might avoid the need for a service call from an AC repair company. If changing the filter doesn't help, you may need to call an AC repair technician to find out what's wrong with your equipment.

The Ducts Are Blocked

Air has to circulate freely through the ducts so enough cool air can blow out through the registers. A couple of things can go wrong with the ducts. For one, a duct might pull apart or be damaged and allow air to blow out in the attic. This reduces the amount of air that will blow from the registers and cool your house down.

Another problem with ducts is the grilles on the end can be blocked by furniture or clutter. Your HVAC vents and grilles should always be uncovered and unblocked so airflow isn't restricted.

The Condenser Outside Is Blocked

One important function of the condenser outside is to blow heat away from the refrigerant line so the refrigerant can cool down before it cycles back into your house. If the condenser is blocked by weeds growing up against the side or by grass clippings filling the spaces between the fins, then there won't be enough airflow to cool the refrigerant, and that could lead to your house being too warm.

The Air Handler Is Dirty

The inside of the air handler might be so dirty that the fan has trouble operating properly. Your AC should be cleaned at least once a year, so if it's been longer than that, you should suspect the problem is with dirty equipment. This is an easy AC repair since all the technician has to do is clean the insides of the equipment to get rid of dust buildup and grime.

The Blower Isn't Working

Airflow through your AC will be impaired when there is an issue with the blower. If the blower shuts down completely, there may not be any air coming out of the registers at all. The AC repair technician has to troubleshoot parts such as the thermostat, control board, capacitor, and blower motor to figure out which one is responsible for your AC malfunction. 

To learn more about AC system repair, contact a local HVAC company.