Ductless systems—whether just for air conditioning or with a heat pump for home heating as well—are impressive feats of engineering. Benefits include very high efficiency, zone control both for customizable comfort and for reducing energy use, and their ability to be used in homes without ducts that would otherwise not have access to whole-home air conditioning.
But because of their unique configurations, they do experience some unique problems. While major repair needs are rare, they do happen, and if you know the signs and can catch them early, you can minimize their impact. Here are four of the things about ductless systems which differ from central AC systems, and where problems can occur.