Installations are on the rise of ductless heat pumps that rely on wall-mounted air handlers.

While energy savings and installation costs are often key factors when purchasing these systems, it is important to consider the requisite air handler maintenance. The labor and cost to clean one, let alone multiple units, should be taken into account. If you have a wall-mounted air handler, be sure to clean the filter every few weeks, keeping a keen eye out for signs of mold or mildew, a common problem. Make sure filters are completely dry before placing them back in service.