Homeowner DIY maintenance
Keep the system clean
Wipe down the outside of the unit with a damp cloth to prevent dust from accumulating.
Make sure there is space around the unit
Don’t put bookcases, picture frames or any other furniture close to a ductless system.
Clean the filters
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 user manual, or more often if your family is sensitive to dust or if you own pets.
Clean the condenser
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.