Installation is not the only task that should be completed by a professional technician. As a reputable HVAC company, we recommend annual inspections of your ductless mini split performed by professionals. Annual maintenance extends the longevity of your system and keeps it operating in top form. Deep cleaning your mini split is one of the best ways to keep it operating at maximum capacity and efficiency. While these systems typically require less maintenance and attention, over time, a light layer of film consisting of dust, pollen, and other contaminants builds up on the coils in your mini split. A coating as small as one-fourth of a millimeter reduces the efficiency of your system by up to 20%. As it goes without saying, this is awful for a variety of reasons. When your mini split is not operating as it should, it must work harder and use more power. Therefore, your electric bill could skyrocket. Removing these contaminants also prevents mold buildup in your system. Mold buildup decreases the air quality in your home and puts your family at risk for health problems caused by exposure to mold, allergens, and other pathogens.