A Lowcountry Homeowner's Guide to Normal Frost vs. HVAC Emergencies
Seeing frost or ice on an outdoor heat pump can be alarming, especially when the system is supposed to be heating your home. But not all ice on a heat pump means something is wrong. During cold, damp weather, a certain amount of frost can form naturally on the outdoor coil. A properly operating heat pump recognizes the buildup and temporarily enters a defrost cycle to remove it.