Why Is My Heat Pump Running But Not Cooling Properly?

Your heat pump can run without cooling due to a dirty filter, incorrect thermostat mode, low refrigerant, blocked or dirty coils, a clogged condensate drain, or an iced outdoor unit. Year‑round systems need twice‑yearly maintenance to keep efficiency and airflow in check.

Quick checks:

• Set thermostat to Cool and Auto.
• Replace/clean the air filter.
• Clear debris around the outdoor unit and coils.
• Look for ice buildup and shut the system off to thaw.
• If problems persist, schedule service for refrigerant and electrical checks.

Updated: 2025-11-07

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