Does that sound familiar? Your heat pump may be going through a defrost cycle. A defrost cycle is a normal operation of your heat pump. It happens when your system detects a buildup of ice or frost on the heat pump (outdoor unit). The buildup of frost will need to be cleared off to avoid hindering the heat pumps operation, before it resumes its normal operation. During a defrost cycle the heat pump (outdoor unit) will make noise and may even blow steam into the air. If your system does not go through a defrost cycle, then the ice will continue to build up on the heat pump and this is sign of a problem.

When a ductless heat pump system is a defrost cycle your air handler (indoor unit) fan may continue to run which may seem like it’s blowing cold air. It is not really blowing cold air but rather room temperature air that can feel cold compared to the heated air that is produces while it’s heating. When a standard heat pump system is in a defrost cycle the auxiliary heat will turn on to maintain the temperature inside. Defrost cycles can occur several times an hour if needed, and they can last from 5-30 minutes. A defrost cycle is a totally normal aspect of a heat pumps operation and is required to ensure that your heating system stays working at peak performance. If you have any questions about your heat pumps operation give us a call and we can answer your questions.