Why Is My Heat Pump Running But Not Cooling Properly?
If your heat pump runs but doesn’t cool, common causes include a clogged filter, blocked outdoor coil, wrong thermostat setting, low refrigerant, or a bad reversing valve or capacitor. In Phoenix-area homes, dust buildup often restricts airflow and heat exchange.
Quick checks:
- Set thermostat to Cool and Auto; target at least 3°F lower.
- Replace or clean the filter; check monthly.
- Clear 2–3 feet of debris around the outdoor unit and rinse fins gently.
- Make sure supply/return vents are open.
- If ice is present or warm air continues, turn system off and schedule service.
Updated: 2025-12-31
Need help in New River, AZ? Call (602) 899-0899 or book online.
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