Can I Perform Ductless Mini-Split Maintenance Myself?

There are some types of ductless mini-split maintenance you can do yourself. While we recommend professional service twice a year to check electrical connections and for refrigerant leaks, drain hose blockages, faulty run capacitors, etc., we also encourage you to clean the system often. Here are some beneficial DIY maintenance tips to keep your ductless mini-split in top shape.

Clean or Change the Air Filters

Each indoor air handler has a filter. Depending on the model, the filter must be replaced or can be cleaned with a dry cloth before being re-inserted. Check the owner’s manual for the recommended interval and other instructions related to the model, but if your home is dusty or you have pets, check the filter more often. Otherwise, dust and dirt can build up in the system, causing it to work less efficiently and possibly leading to damage and a shortened lifespan.

Clean the Outside of Each Unit

If dust and dirt collect on the exterior of an air handler, particles can get inside and interfere with internal components. Dust the unit weekly to avoid any problems. This only requires a damp cloth and a gentle cleaning solution. Also, make sure the exterior of each vent is free from dust and dirt that can cause a clog.

Keep the Condenser Coils Clean

The condenser coils in the outdoor unit remove heat from the refrigerant. But if they’re dirty, heat transfer can be impeded and the system won’t work properly. Follow the care instructions in the owner’s manual to clean the coils. Generally, condenser coils can be sprayed clean with a garden hose, while the remaining debris can be removed with an AC coil cleaning brush. Also, check the blower assembly and fan wheel for dirt, and clean them as necessary. Just remember to turn the unit off before you get started.

Make Sure the System’s Pipes Are Clear

Dust and debris can block the drainage pipes between the indoor and outdoor units. The system will then struggle to maintain a comfortable temperature. To avoid trouble, clean the pipes by vacuuming the dirt out or clearing it with a brush. Call a professional if the clog is deep or you’re unable to clear the line.

Clear the Area Around Each Unit

Make sure no furnishings, objects, or clutter are blocking the ductless mini-split unit. If there’s not enough space around it, airflow can be restricted and dust can accumulate in the system. Ideally, large furniture, bookcases, and artwork should be kept at least four feet away from the unit.

Protect the Outdoor Unit in Winter

Snow, ice, and debris from trees can prevent the outdoor unit from running normally. Check it often during the colder months. Gently remove any snow and ice you find. Otherwise, it can cause serious damage that is expensive to repair. To prevent issues, mount the condenser unit above grade and place a protective plywood cover on top to avoid contact between the equipment and debris or moisture.

Schedule Ductless Mini-Split Maintenance with NEXGEN

Your mini-split system provides heating and cooling, so it should be inspected and cleaned by a professional twice a year. At NEXGEN, our licensed HVAC technicians will ensure your system gets the care it needs. Routine service and repair discounts are included in our maintenance plan. Continue reading to learn more about maintaining your ductless mini-split system. Schedule service online today.