Homeowners who install a mini split system in their homes often describe them as game-changers. That’s because a mini split system gives them more control of their heating and cooling needs in specific house rooms. Additionally, a ductless system can lower your heating and cooling bills while maintaining a comfortable temperature in the areas you use most. And because mini splits have an air purification system, they will also improve your home’s air quality.

However, like all systems that can help improve indoor air quality, your ductless mini split will need to be periodically cleaned.

How To Clean a Mitsubishi Minisplit

Your mini split may consist of an indoor unit (an evaporator coil and blower) and an outdoor unit that houses the compressor. Both need regular cleaning to ensure good airflow and keep your ductless units functioning for years.

Step 1: Cut the power to the system.

Turn off the circuit breaker controlling the indoor and outdoor units to avoid getting a severe shock.

Step 2: Clean the filters.

Lift the front cover on your Mitsubishi ductless mini split as far as it will go and disengage the hooks on either side. Remove the filter (there may be two.) Vacuum the filters with a brush attachment.

If the filters are particularly dirty and have been a long time between cleanings, wash the air filters with soap and warm water. Make sure they are completely dry before putting them back in the unit.

Step 3: Clean the heat exchanger.

Set the filters aside and use the brush attachment on your vacuum to clean the heat exchanger fins, which you will see inside the unit. Take care with this job, as the fins are fragile.

Step 4: Clean the fan.

Remove the bottom cover and use your vacuum to clean the fan blades, fan motor, and cooling coils. If there is still visible dust, gently wipe the area with a dry cloth.

Step 5: Clean the condensate pan.

Finally, wipe up any moisture on the pan, which can be found at the bottom of the Mitsubishi mini split unit. Make sure the drain hose is operating as it should. If there is standing water, it may be blocked. Pour in a little white vinegar to clear it.

Step 6: Begin cleaning the outdoor unit by removing debris from the housing.

To preserve the energy efficiency of ductless systems, you need to clean the indoor and outdoor units. Begin cleaning by removing loose debris you find in the housing.

Step 7: Vacuum and wash the grilles.

You might be able to remove the dirt on the heat exchange grilles with a vacuum or a dry cloth. However, if the grille is dirty, you may need to spray it with liquid soap and wash it down with a garden hose.

Step 8: Clean the inside of the housing.

Unscrew and remove the top of the mini split and wipe down the fan blades with a cloth. Next, vacuum the interior of the housing, including the condenser coils.

Step 9: Clean the condensate pan and hose.

Wipe the drain pan with a cloth. If you see any mold growing, spray it with a bleach solution and clean the hose with vinegar.

Contact HOP Energy To Help You Maintain All Your HVAC Systems

Keep your Mitsubishi mini split air conditioning unit (and your entire HVAC system) running efficiently by having a HOP Energy technician inspect your equipment and make any necessary HVAC maintenance recommendations. Fill out the contact form on our website, and we will reach out to you to schedule an appointment.

Contact us today