01/25/2026
Ice storm heatpump tips
During an ice storm, the primary goal for heat pump owners is maintaining airflow while protecting the outdoor unit from mechanical damage caused by heavy ice accumulation.
Immediate Actions During an Ice Storm
* Clear the Unit Carefully:Gently remove snow and ice from the top and sides of the outdoor unit using a broomor your hands. Never use a shovel, ice pick, or screwdriver, as these can easily pierce the delicate coils.
* Monitor the Defrost Cycle:It is normal for the unit to periodically stop its fan, make a "whooshing" sound, and emit steam; this is the automatic defrost cycle melting frost.
* Switch to Emergency Heat (Aux Heat) if Needed: If ice is accumulating faster than the defrost cycle can melt it, or if the unit is completely encased in a thick layer of ice, switch your thermostat to Emergency Heat. This shuts off the outdoor unit to prevent the fan motor from burning out while using indoor electric heat strips to keep you warm.
* Check Ventilation Pipes: If you have a high-efficiency system, ensure the white PVC intake and exhaust pipes on the side of your house are clear of ice and snow to prevent a system shutdown or dangerous carbon monoxide buildup.
What NOT to Do
* Do Not Use Boiling Water:While warm water can help melt ice, hot or boiling water can cause the metal components to crack due to rapid temperature changes.
* Do Not Cover While Running: Never wrap the unit in a tarp or plastic while it is operational, as this restricts the necessary airflow and can cause the system to overheat or fail.
* Do Not Panic Over "Steam": Seeing "smoke" coming from the unit during freezing weather is usually just steam from a healthy defrost cycle.
Preventative Maintenance
* Maintain Clearance: Keep at least 2 feet of spacearound the unit clear of shrubs, leaves, and debris to ensure optimal air intake.
* Change Filters: A dirty indoor air filter restricts airflow, which makes the outdoor unit more prone to freezing up.
* Inspect Overhanging Gutters: Ensure gutters above the unit are not leaking or dripping directly onto it, which can cause massive ice "glaciers" to form that the defrost cycle cannot handle.
