Ductless systems are amazing. They’re more efficient than central air conditioners, both because the motors are smaller and because they avoid the energy loss from leaky ductwork that is so common in central air systems. They can be installed in all kinds of situations where there is no room for ductwork. The ability to individually control the temperature of each zone is a benefit to your comfort as well as a way to cut down on your cooling bills. However, no system works perfectly all the time. One of the things you need to keep an eye out for with ductless AC systems is mold growth. Here’s what you should pay attention to.