It’s normal for an air conditioner to run longer cycles when it’s really hot outside. Still, the appliance should cycle off every 15 to 20 minutes. If yours is running constantly, this is a major warning sign to schedule an inspection. There’s a good chance something is wrong that needs immediate attention to protect the system from expensive damage.
Dirty Air Filter
Before you book an inspection, check the air filter. If it’s dirty, replace it. Clogged air filters reduce airflow, making the equipment run longer cycles. With a clean filter in place, the AC may revert to its normal operating pattern. This essential maintenance task is also important for the home’s overall air quality.
Frozen Coils
When ice forms on the evaporator coil, it hinders its ability to absorb heat to lower the temperature. This can lead the AC to run continuously because it’s never able to reach the temperature setting on the thermostat. One or more factors could be contributing to this problem, including a dirty filter, low refrigerant, or restricted airflow from blocked return vents.
Low Refrigerant
A low refrigerant level means the air conditioner has a leak somewhere. It also may explain why the system runs constantly to keep the home comfortable. You can’t just recharge the refrigerant and expect the problem to disappear for good. You must have the leak fixed. Only a licensed technician can do this since working with refrigerant requires specialized equipment and certification.
Closed or Blocked Vents
If you close air vents in any rooms, remember to open them back up. Vents that remain closed for extended periods interfere with the air conditioner’s airflow and pressure balance. The thermostat may notice that the home isn’t reaching the desired temperature and tell the AC to run longer cycles to make up for the difference.
Leaky Ductwork
Leaky ductwork is a common reason for an air conditioner to run constantly. It does this because the conditioned air never reaches the rooms it’s supposed to go to. Instead, it escapes through tears, holes, or loose connections in the duct joints. If you think the system has a duct leak, don’t stress about having to replace the whole duct system. This likely won’t be necessary unless multiple parts of it have severe damage. Technicians have several duct sealing techniques, like using mastic sealant or aerosol-based sealing. These allow them to fix duct leaks, resolve airflow loss, and restore an air conditioner’s normal operation.
We’ve reviewed just a few of the reasons that an air conditioner may run constantly. If you change the air filter and open closed vents, and the AC still won’t cycle properly, schedule a professional inspection as soon as possible. When you need AC repair services in Phoenix, AZ or Tucson, AZ, contact Alaskan AC.