5 Most Common AC Unit Issues

5 Most Common AC Unit Issues

As we approach the rising temperatures of the summer season, many homes will have their AC units running almost constantly. When an AC unit is constantly in use, there is a much higher chance for it to encounter issues, so it is important for homeowners to know what to look for and how to repair it.


Filter issues happen very frequently with most AC units, but this is one of the most simple problems for a homeowner to fix personally. Be sure to read the manufacturer’s instructions, and change the air filter regularly. Dirty filters reduce airflow and can even cause parts of the unit to freeze.


The fans in an AC unit provide airflow and are essential parts for the unit to perform properly. If one or both fans are malfunctioning, you may need to consult the manufacturer’s instructions or contact a professional to make repairs.

Water Damage

Water from the AC unit goes down a drain built into the unit. When this drain becomes clogged, it can flood the unit and cause water damage or mold growth in your walls and ceilings. For these repairs, it is best to contact a professional who will be able to repair all parts of the AC unit as well as be able to fix the damages it may have caused.

Evaporator Coils

The evaporator coils and condenser coils are both essential for the AC unit to provide your home with cool air. Be sure to hose these off regularly, and make sure they are not becoming corroded or dirty.


Refrigerant is what a typical AC unit uses to remove heat and humidity from the air before blowing out cool air into your home. Leaks in the refrigerant can cause the temperature in your home to fluctuate wildly, so it is important to call a technician to make these repairs and ensure that your AC unit is up and running again soon.