Ductless systems are a flexible solution for rooms where ductwork isn’t available. While most ductless system maintenance should be performed by a certified dealer, there are a few preventative maintenance measures you can take to maximize the efficiency of your unit. Before starting any ductless system maintenance, remember to turn off each component in the system, including the outdoor and indoor units.
Wipe down the outside of the unit with a damp cloth to prevent dust from accumulating.
Don’t put bookcases, picture frames or any other furniture close to a ductless system.
Each indoor evaporator unit has a removable air filter that should be cleaned regularly. Clean these filters at least as often as recommended in your owner's manual, or more often if your family is sensitive to dust or if you own pets.
Make sure the outdoor unit is powered off, then, using a garden hose, spray any dust and dirt off of the coil. Avoid using high water pressure, as the fins can be easily bent. If you accidently bend some of the fins, they can be easily bend back into place with a special alignment comb.
Your mini-split system should be serviced by a professional at least once per year. Here are a few of the things your specialist will check for: