Why Is My Heat Pump Running But Not Cooling Properly?

A heat pump that runs but isn’t cooling usually has restricted airflow, a dirty outdoor coil, low refrigerant, or a thermostat/control problem. Our technicians diagnose these issues during repair or a tune-up and can provide same-day service.

Quick checks:

• Replace the air filter.
• Set thermostat to Cool, fan Auto, and lower the setpoint.
• Clear leaves/debris from the outdoor condenser coil.
• Open supply/return registers.
• Check for ice on lines or a clogged condensate drain; turn the system off if iced.

We service Burlington, MA and nearby cities. <br/> <br/> Updated: 2025-11-28 <br/> <br/> Need help in Burlington, MA? Call (978) 716-5703 or book online.