Heat Pump - No Cooling

If your heat pump isn’t cooling properly, there are several troubleshooting steps you can take before calling for service. Follow these guidelines to check for common issues that may be preventing your system from working efficiently.

Troubleshooting Steps


Check the Thermostat Settings

  • Ensure the temperature control is set below the current room temperature.
  • Confirm that the system switch is set to COOL or AUTO mode.
  • The fan switch should be set to ON for continuous airflow or AUTO for operation only when cooling is active.

Test the System

  • Lower the thermostat to its lowest temperature setting and listen for the unit to turn on.

Inspect the Airflow

  • If airflow from your vents is weak, check the air filter. A dirty or clogged filter can restrict airflow and reduce cooling performance.
  • Ensure that all air registers and vents are open and unobstructed.

Check the Power Supply

  • Locate the power disconnect switch near both the indoor and outdoor units and make sure they are switched on.
  • Inspect the circuit breaker or fuse box to ensure the heat pump hasn’t tripped a breaker or blown a fuse.

Look for Ice or Frost Buildup

  • Ice buildup on the coils or refrigerant lines can indicate a potential low refrigerant level or restricted airflow.
  • If you notice ice, turn off the system and let it thaw before restarting.

Still Having Trouble? We Can Help!

If your heat pump is still not cooling properly after performing these checks, contact R & R Heating & Cooling LLC for professional service. Our expert technicians are ready to diagnose and repair any issue to keep your home comfortable.