What To Do When Your Air Conditioner Stops Blowing Cold Air

If your AC isn't blowing out cold air there is definitely an issue. However, it isn't always a sign that you need to purchase a completely new unit. Several things can cause your air conditioner to quit blowing out cold air. Before you purchase a brand new AC, check some of the simplest solutions.

Check the Thermostat

Your AC can stop blowing cold air if you have a problem with your thermostat, and the good news is, most of the time thermostat problems are simple to fix. The first thing you need to do is make sure you have your thermostat set properly. Keep in mind that the fan on your AC unit can run without the AC running. So, make sure you have the fan setting on your thermostat set to "auto" instead of "on" so that the fan only runs while the air conditioner is working. Even if the thermostat settings are correct it doesn't mean that it isn't your thermostat that's causing causing problems. You need to have an air conditioner repair tech troubleshoot your thermostat to make sure it's triggering your AC's cooling mode when needed. If it isn't, rewiring or replacing the thermostat should resolve your problem.

Add Freon

Your air conditioner will not produce cold air if it doesn't have enough freon. When your AC is running, the coils change the freon from a liquid substance into gas, which cools the coils allowing your air conditioner to produce cold air. Your local air conditioner repair company can recharge your AC unit by adding more freon to it. However, this isn't a permanent fix. You may have to have the unit recharged before each cooling season. So, in the long run, it may be cheaper to replace the unit completely. If you decide to have the unit recharged, make sure the repairman checks your AC unit and the hoses for any freon leaks. Often, leaks can be repaired, which will help your AC hold a charge.

Clean the Coils

Did you clean the AC's coils before you started using the air conditioner this year? If not, you could have a blockage caused by debris from your yard. This will keep any cool air from entering your house. To clean the coils:

  • Replace the AC's filter.
  • Spray your AC's coils down using a hose to remove any unwanted debris.
  • Take the coil assembly off of the unit, clean, and replace it.

After the coils are clean, check the temperature of the air going in and out of the unit using a temperature probe to make sure that the air exiting the unit is cooler than the air entering it.

Don't automatically assume the worst if your AC stops blowing cold air. Instead, take some time to troubleshoot the problem and call an air conditioner repair company, like Neffsville Plumbing & Heating Services, if needed.