Ultimate Guide: How to Clean Your Mitsubishi Mini Split

To clean a mitsubishi mini split, turn off the unit, remove the filters, and clean them with water and soap. The indoor unit can be wiped down with a damp cloth.

Mitsubishi mini splits are versatile and efficient heating and cooling systems that require regular maintenance to function correctly. Skipping maintenance can lead to poor performance, increased energy costs, and even system failure. Thus, maintaining and cleaning mitsubishi mini splits is critical.

Typically, the filters in mitsubishi mini splits need to be cleaned every two weeks for optimal performance. Dirt and debris can accumulate on the evaporator coils and reduce the system’s overall efficiency, causing it to work harder and consume more energy. Therefore, it is critical to know the proper cleaning methods to keep your mitsubishi mini splits running efficiently. This article will provide a comprehensive guide on how to clean a mitsubishi mini split.

Essential Tools And Materials

Cleaning your mitsubishi mini split can help keep the air in your home clean, improve the efficiency of your system, and potentially extend the lifespan of your equipment. Before getting started, it’s essential to have all the necessary tools and materials on hand.

In this section, we’ll go over the list of tools and materials needed, as well as an explanation of why each one is important and essential.

List Of All The Tools And Materials That You Need Before Getting Started With The Cleaning Process.

Before beginning the cleaning process, make sure you have the following tools and materials:

  • Screwdriver (phillips or flathead)
  • Cleaning solution (mitsubishi electric’s ma-cj2 mightyjet descaler or a mix of water and vinegar)
  • Spray bottle
  • Water hose (with adjustable nozzle)
  • Soft-bristled brush
  • Cloth for wiping
  • Ladder or stool (if you need to reach the indoor unit)

Explanation Of Why Each Tool Is Important And Essential.

Now let’s discuss why each tool and material is important and essential for cleaning your mitsubishi mini split:

  • Screwdriver: You will need a screwdriver (phillips or flathead depending on your unit) to remove the panel from the indoor unit so that you can access the air filter and the coils.
  • Cleaning solution: Use a mitsubishi electric’s ma-cj2 mightyjet descaler cleaning solution or a mix of water and vinegar to clean the coils and the air filter. Keep in mind that using harsh chemicals can damage your unit, so it’s best to use a solution recommended by the manufacturer.
  • Spray bottle: You’ll need a spray bottle to apply the cleaning solution evenly on the coils and the air filter.
  • Water hose: You’ll need a water hose (with adjustable nozzle) to rinse the coils and the air filter after applying the cleaning solution.
  • Soft-bristled brush: Use a soft-bristled brush to clean the coils and air filter gently. Using a hard-bristled brush can damage the fins of the coils, making your mini split less efficient.
  • Cloth for wiping: After cleaning the coils and the air filter, use a soft, dry cloth to wipe off any excess moisture or debris.
  • Ladder or stool: Depending on the location of your indoor unit, you may need a ladder or stool to reach it safely. Make sure you position the ladder or stool on level ground and never stand on the top two steps of a ladder.

By following these guidelines and using the necessary tools and materials, you can effectively clean your mitsubishi mini split and maintain your unit’s efficiency and cleanliness.

Safety Measures To Follow

Safety Guidelines To Keep In Mind Before Starting Your Cleaning Process

Cleaning your mitsubishi mini split is an essential part of its maintenance, ensuring it runs at its optimum level. However, before you get started, it is essential to follow specific safety guidelines to avoid any potential danger. Here are some fundamental safety guidelines to keep in mind:

  • Power off the unit: Before you start the cleaning process, ensure that the unit is not connected to any power source. You can do this by turning off the circuit breaker that powers the unit and unplugging it from the socket.
  • Wear personal protective equipment (ppe): Cleaning your mini split can be tricky, especially if you use harsh chemicals or high-pressure water jets. To avoid any accidents or health hazards, always wear gloves, goggles, and a nose mask.
  • Use a stable ladder: Depending on how high the mini split is mounted, you may need to use a stepladder or an extension ladder. Ensure that the ladder feet are stable on the ground and the top is stable against the wall to avoid any slips or falls.
  • Use appropriate cleaning materials: Using the wrong cleaning products can damage the mini split, causing it not to function effectively. Always ensure that you use cleaners recommended by the manufacturer or mild soap and water to avoid any harm.
  • Adhere to manufacturer’s instructions: Every mini split has unique features and requires distinct cleaning procedures. To avoid any issues, read the manufacturer’s guide and adhere to the recommended cleaning techniques.
  • Keep children and pets away: The cleaning process can be hazardous to children or pets, and it is essential to keep them away from the area to avoid any accidents.
  • Do not wash the unit while it’s on: The mini split requires water to cool its condenser or evaporator. However, cleaning it with water while it’s running can cause electrical short circuits or damage the unit’s internal components.
  • Do not use abrasive materials or stiff brushes: Using abrasive materials or stiff brushes can scratch the mini split resulting in damage that affects its efficacy.
  • Do not use a pressure washer: High-pressure washer jets can damage the mini split fins causing air leakage, leading to poor performance.
  • Turn on the unit only after it’s dry: After cleaning, ensure that the unit is completely dry before powering it on to prevent any electrical shock.
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Explanation Of The Risks Involved In Cleaning The Mitsubishi Mini Split Without Taking Any Safety Measures

Cleaning your mitsubishi mini split without taking any safety measures can be dangerous and may lead to accidents or harm to the unit. Here are some of the risks involved:

  • Electrical shock: The mini split is powered by electricity, and cleaning it while it’s connected can cause electrical shock leading to severe injuries or even death.
  • Chemical hazards: Using harsh chemicals or strong cleaning products without personal protective equipment (ppe) can harm your skin, eyes, or lungs leading to health issues or complications.
  • Damage to the unit’s internal components: Using abrasive materials or stiff brushes to scrub the mini split can scratch the unit’s surface or damage the internal components leading to reduced performance.
  • Poor performance: Not cleaning your mini split can cause the air filters to become clogged with dirt and dust, leading to poor performance and increased energy bills.
  • Reduced lifespan of the unit: Neglecting to maintain and clean your mini split can damage it over time, leading to reduced efficiency and lifespan.

Steps To Clean Your Mitsubishi Mini Split

Comprehensive Guide To Cleaning Your Mitsubishi Mini Split

If you own a mitsubishi mini split, then keeping it clean is crucial for its efficiency and longevity. Here is a comprehensive guide to help you clean your mitsubishi mini split properly:

Step-By-Step Instructions On How To Dismantle And Clean Your Unit

Before you start cleaning your mitsubishi mini split, you need to know how to dismantle the unit. Follow these simple steps:

  • Turn off the power supply to the unit
  • Open the front grille by gently pulling it downwards.
  • Take out the indoor filters by pushing them upwards and out.
  • Using a screwdriver, remove the screws holding the exterior unit’s grille
  • Take out the outdoor filters in a similar manner to the indoor filters
  • Remove the drain pan cover.

How To Safely Shut Off The Power Supply Before Cleaning

Safety should always come first. Before you start cleaning your mini split, make sure to turn off the power supply to the unit to avoid any accidents or damage.

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  • Locate the circuit breaker that supplies power to the mitsubishi mini split
  • Turn off the circuit breaker to shut off the power supply

How To Clean The Indoor And Outdoor Filters Effectively

Cleaning the indoor and outdoor filters is crucial in ensuring your unit’s efficiency. Here is how you can clean them effectively:

  • Remove the filters gently
  • Wash them with warm water and mild detergent
  • Rinse the filters thoroughly and let them dry naturally
  • Once the filters are dry, re-insert them back in their original positions.

How To Clean The Indoor And Outdoor Coils Using A Spray Bottle And A Soft-Bristled Brush

Dirty coils can reduce the efficiency of your unit and even cause it to malfunction. Here is how you can clean the indoor and outdoor coils:

  • Use a spray bottle to apply a mild detergent solution to the coils
  • Let the solution sit for a few minutes
  • Scrub the coils gently with a soft-bristled brush
  • Rinse the coils with water carefully
  • Allow the coils to dry completely before reattaching the grille.

How To Clean The Fan Blades With A Soft Cloth

Cleaning the fan blades ensures that they function correctly and boost your mitsubishi mini split’s performance. Here’s how you can clean the fan blades:

  • Use a soft cloth to gently wipe the blades clean
  • If there’s any buildup or dirt, use a spray bottle with a mild detergent solution to clean the blades
  • Wipe the blades again with a clean, dry cloth.

How To Clean The Drain Pan With A Mixture Of Water And Vinegar

A dirty drain pan can lead to clogged drains and water leakage. Here is how you can clean the drain pan easily:

  • Remove the drain pan cover
  • Mix equal parts of water and vinegar
  • Pour the solution onto the drain pan
  • Let it sit for a few minutes
  • Scrub the drain pan gently with a soft-bristled brush
  • Rinse the drain pan thoroughly with water and let it dry completely.

Cleaning your mitsubishi mini split isn’t challenging, and by following the steps mentioned above, you can keep it running smoothly for years to come.

Warnings And Precautions

Before attempting to clean a mitsubishi mini split, it is essential to know the associated risks and precautions to ensure your safety and avoid complications with the system. Here are some things to bear in mind:

Common Mistakes To Avoid When Cleaning A Mitsubishi Mini Split

  • Do not clean the equipment with water or any other liquid while it is turned on.
  • Do not disassemble any component of the system if you do not know how to put it back together correctly.
  • Do not use a vacuum cleaner to clean the equipment as it may damage the system.
  • Do not use harsh chemicals or detergents to wipe the indoor unit’s surface as they may cause chemical contamination or damage the system’s finishes.

Warnings Of The Risks Involved If These Precautions Are Not Taken

  • Failure to follow the above precautions may result in electrocution, fires, or other hazards. Therefore, safety should be your top priority when cleaning your mitsubishi mini split.
  • Using inappropriate cleaning methods with harsh chemicals may also damage the equipment, which can lead to expensive repairs or replacement costs.
  • Disassembling components and failing to put them back together correctly can cause further damage and affect the system’s performance, increasing your energy bills, and resulting in long-term inefficiencies.

Remember to adhere to these precautions to avoid risking electrocution, fires, or system damage. If you are unsure about cleaning your mitsubishi mini split, it is best to seek assistance from a qualified technician to ensure its longevity and efficient functioning.

Final Thoughts

Importance Of Cleaning Your Mitsubishi Mini Split Regularly

When it comes to keeping your mitsubishi mini split running smoothly, regular cleaning is crucial. Here are a few reasons why:

  • Regular cleaning can help reduce energy consumption, thus saving you money on your energy bills.
  • Proper cleaning can help keep your unit from freezing up, which can cause your system to break down.
  • Cleaning helps prevent the buildup of dirt, dust, and other pollutants, which can lead to poor indoor air quality.
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Benefits Of Cleaning Your Mitsubishi Mini Split

There are several benefits to cleaning your mitsubishi mini split on a regular basis, these include:

  • Improved indoor air quality – regular cleaning can help remove dirt, dust, and other pollutants, which will help reduce the number of irritants in the air.
  • Increased energy efficiency – a clean unit, with good airflow, will use less energy to operate, which will save you money on your energy bill.
  • Extended lifespan of your unit – regular cleaning can help keep your unit in good condition, which can extend its lifespan.

Other Tips And Tricks To Help Keep Your Unit Running Smoothly And Efficiently

Aside from regular cleaning, there are several things you can do to keep your mitsubishi mini split running smoothly:

  • Check and clean your air filters every 2-3 weeks.
  • Keep the outdoor unit free of debris, such as leaves and branches.
  • Use curtains or blinds to keep direct sunlight from hitting the unit.
  • Keep all doors and windows closed when the unit is running.
  • Avoid setting the temperature too low in the summer or too high in the winter.

By following these tips, you can help maximize the lifespan of your unit and ensure it’s running efficiently.

Frequently Asked Questions For How To Clean Mitsubishi Mini Split

How Often Should I Clean My Mitsubishi Mini Split?

We recommend cleaning your mitsubishi mini split every 3 to 6 months. Regular cleaning helps maintain the unit’s efficiency and prolong its lifespan. However, depending on usage and the environment, you may need to clean it more often.

What Materials Do I Need To Clean My Mitsubishi Mini Split?

To clean your mitsubishi mini split, you will need a soft cloth, a fin brush, a water hose or bucket of water, and a cleaning solution. You can use a commercial coil cleaner or make your own cleaning solution using warm water and dish soap or vinegar.

Can I Clean My Mitsubishi Mini Split By Myself?

Yes, you can clean your mitsubishi mini split by yourself. However, if you are unsure or uncomfortable doing it, you can hire a licensed hvac professional to do it for you. Just make sure to follow safety precautions and turn off the power before cleaning.

How Do I Clean The Filters Of My Mitsubishi Mini Split?

To clean the filters of your mitsubishi mini split, turn off the unit and remove the front panel. Then, gently clean the filters with a soft brush or rinse them with water. Make sure the filters are completely dry before reattaching them to the unit.

Why Is It Important To Clean My Mitsubishi Mini Split?

Regular cleaning of your mitsubishi mini split helps prevent dust, dirt, and mold buildup, which can affect the unit’s performance and indoor air quality. It also helps prolong the lifespan of the unit and reduces the need for costly repairs or replacements.


Cleaning your mitsubishi mini split is not only crucial for its longevity but also for your health. By following the steps outlined in this article and doing the maintenance regularly, you can ensure that your mini split remains in top condition and provides clean air to your home or office.

The cleaning process is easy, and you can do it yourself with a few basic tools and a little time. Remember to turn off the power, cover the electrical parts, and clean the filters, coils, and fan blades. It’s essential to do this regularly, as debris and dust can accumulate quickly, affecting the effectiveness of the system.

Regular cleaning can also save you money on energy bills and prevent costly repairs. So, get into the habit of cleaning your mini split regularly and enjoy the benefits of a clean and efficient cooling and heating system.

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