Heat pump iced over
Thick ice on the outdoor unit that doesn't clear, and the house cooling down.
What you're probably seeing
Thick ice on the outdoor unit that doesn't clear, and the house cooling down.
Likely causes
- A defrost system problem.
- Low refrigerant.
- A stopped outdoor fan or blocked airflow.
Safe checks you can do now
- Light frost that clears is normal.
- Clear snow and leaves from around the unit.
- Switch to emergency heat and call; don't chip ice.
When to call a pro
Ice stays for hours or the unit stops heating.
General information about common causes, not a diagnosis of your home.
FAQ
Quick answers
Who fixes heat pump iced over?
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?
Ice stays for hours or the unit stops heating.
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