Why Does My Air Conditioner Run All the Time?

This is a very common situation with many homeowners, especially with high temperature and humidity like we just had.

Some of the most common causes are:

  • Dirty Filters–Restricts airflow which will cause the evaporator coil to freeze, which results in very little or no airflow in the house.
  • Refrigerant Imbalance–If the charge is not up to factory specifications the system will not cool properly.
  • Dirty Condenser Coil–In certain areas debris like cottonwood seeds will usually cause the compressor to shut down on internal overload.
  • Equipment Size–If equipment is undersized it may not ever get to desired set point on the thermostat.
  • Old Age–When compressors are over 10 years old, they may lose some pumping capacity of the refrigerant which results in constant run time.

Filter changes and hosing down the condensor are the homeowner’s responsibility. All other issues should be looked at by one of our professional, certified technicians.

Why does my AC run so much - indoor air quality solutions