Hansberger Refrigeration Blog: Your AC Repair Resource

Is Your AC Not Blowing Air? Learn What You Can Do.

An AC not blowing air is just what you don’t need on a summer day here in southern Arizona. Central air conditioners are generally reliable and resilient even in hot weather. An AC not blowing air can be a simple matter or a more fundamental problem that requires professional attention. If you’re not getting cool comfort on a day when you really need it, here are some possible solutions.

What You Can Do Yourself

These are some common causes of AC not blowing air to check first:

  • The unit is turned off. Check the thermostat to make sure it is set to the “Cool” function and not “Off” or “Heat.”
  • The thermostat setting is too high. The air conditioner won’t cycle on and blow air until the indoor temperature exceeds the programmed temperature. Make sure the thermostat setting is correct.
  • The air filter is clogged. If the system air filter becomes excessively clogged with dust or dirt, airflow may be obstructed, so you won’t feel cool air circulating. Check the condition of the air filter and change it if it’s dirty. During the summer, replace the air filter every month.  
  • Vents are closed or obstructed. All HVAC vents in the house should be open all the time. If a supply vent or a return vent is closed or obstructed, airflow into a specific room will be shut off.

When You Need Professional Help

Issues that generally require the services of a qualified HVAC service technician include:

  • Tripped circuit breaker. If the air conditioner has tripped a circuit breaker in the main power panel or elsewhere, power is shut off to the unit, and it will not blow air. A service technician will be required to determine why the unit tripped the circuit breaker and make the necessary repair.
  • Component failure. Critical AC components that may fail and interrupt air circulation include a defective compressor, refrigerant leakage, a dirty evaporator or condenser coil, or a defective blower motor.

For fast, professional service to resolve an AC not blowing air, contact Hansberger Refrigeration and Electric Company.