Heat Pump: Common Problems and How to Fix Them

When dealing with heat pump, a system that transfers heat using a refrigerant cycle to heat or cool a home. Also known as air‑source heat pump, it blends heating and cooling in one unit, making it a popular choice for energy‑savvy households.

These units are part of a larger HVAC system, the collection of heating, ventilation, and air‑conditioning components that keep indoor air comfortable. When the heat pump stops delivering the right temperature, the first place to look is the thermostat, the control device that tells the system when to heat or cool. A mis‑set or faulty thermostat can make the pump run nonstop without actually changing the air temperature. Another frequent culprit is the refrigerant, the fluid that absorbs and releases heat as it circulates through the pump. Low or contaminated refrigerant reduces efficiency and may cause the unit to freeze up or blow warm air in winter.

Why Heat Pumps Fail and How to Keep Them Running

Common signs include strange noises, reduced airflow, and the dreaded "running but not cooling" scenario. Regular filter cleaning, checking for ice buildup, and verifying electrical connections can solve many issues before a technician is needed. If the unit still struggles, it’s time to inspect the compressor, pressure switches, or call a qualified professional who knows both heating and cooling technology.

Below you’ll find a collection of articles that dive deeper into each of these topics, from DIY diagnostics to when you should definitely call a pro.