Heat pump blowing cool air in heat mode
The heat pump runs but the air feels cool or lukewarm.
What you're probably seeing
The heat pump runs but the air feels cool or lukewarm.
Likely causes
- It's in a defrost cycle (normal for a few minutes).
- Reversing valve or refrigerant problems.
- Thermostat set to cool or auto incorrectly.
Safe checks you can do now
- Check the thermostat mode.
- Wait out a defrost cycle (10 minutes or so).
- Check the filter.
When to call a pro
Air stays cool beyond a defrost cycle.
General information about common causes, not a diagnosis of your home.
FAQ
Quick answers
Who fixes heat pump blowing cool air in heat mode?
A heating and cooling company. Call (844) 511-3573 to connect with an independent local heating and cooling company.
How much does it typically cost?
Heat pump repair: $150–$650 minor (major parts up to $2,500+) (HomeGuide 2026 national ranges). Your pro sets the real number after seeing the job.
When should I call?
Air stays cool beyond a defrost cycle.
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