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Why Is My Heat Pump Running But Not Cooling Properly?

Common causes include a dirty filter, iced outdoor coil, low refrigerant, wrong thermostat mode, blocked vents, or a bad reversing valve or capacitor. We diagnose issues on site in Denver, Aurora, and nearby.

  • Set thermostat to Cool and Auto.
  • Replace or clean the filter.
  • If the outdoor unit is iced, turn system off and fan on.
  • Clear 2 ft around the outdoor unit.
  • Check breakers and open all vents.

If cooling still lags, ask about our $69 Repair Assessment or $259 Tune-Up.


Updated: 2025-11-27 00:00:00


Need help in Broomfield, CO? Call (720) 605-1072 or book online.

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