Ductless heating and AC systems are an exciting alternative to conventional whole-home systems. If you don’t have ducts, or if repairing your old deteriorating ducts is too much of a hassle, you can still get whole-home AC and heating from a technician who installs ductless units. But, like any mechanical system, you may need repairs at some point in time. Here are some of the most common repairs we see with these types of units.