How to clean and replace mini split air filters

Ever notice how dust and allergens somehow find their way into your home? When the air filters in your mini split system get clogged up, that might be why. We all want our homes to be comfy and healthy, right? Keeping those filters clean can make a big difference. By learning how to clean and replace your mini split air filters, you can keep the air flowing smoothly, ease the strain on your system, and enjoy fresher indoor air.

The information in this article may not apply exactly to your specific appliance model. For the most accurate guidance, it’s best to check your manufacturer’s documentation or reach out to us if you have any questions.

Signs your mini split air filter needs attention

It’s handy to know when your air filter needs a little TLC. You don’t always have to wait for scheduled maintenance or count the weeks. Just keep an eye (and ear) out for a few common signs:

• Weak airflow: If you hold your hand near the vent and the airflow feels weaker than usual, a clogged filter might be the issue.
• Dust gathering: Spotting dust buildup around the unit or on surfaces in your home can mean the filter isn’t catching particles like it should.
• Higher energy bills: An uptick in energy costs suggests the system’s working harder to make up for lousy airflow.
• Odd smells or noises: Sometimes, a clogged filter leads to musty odors or strange sounds as the system struggles to push air through.

Tackling these problems early can prevent bigger headaches later on. If you’re not sure how to find your mini split filters, check out your model’s manual or peek at our guide on how to find your appliance’s model number.  

How to clean your mini split air filters

Cleaning a reusable air filter is usually pretty straightforward. With a few basic supplies and a bit of patience, you can get it done. Follow these steps to clear out common household allergens and help your filter perform its best:

1. Turn off the system: Power down your mini split and unplug it if you can. You don’t want any electricity running through the unit while you’re working.
2. Open the front panel: Most mini split units have a front panel that flips up or releases with tabs. Gently lift or release these tabs to get to the filter area. If you’re having trouble, refer to your manual.
3. Remove the filters: Carefully slide or pull out each filter. Some units have more than one, so check for multiple layers or sections.
4. Vacuum the surface: Use a vacuum cleaner with a soft brush attachment to remove dust from both sides of the filter. Move slowly to pick up as much debris as possible.
5. Rinse with warm water: After vacuuming, rinse the filter under lukewarm water. If the manufacturer says it’s okay, add a drop of mild detergent. Gently rub the filter to loosen dirt, but don’t scrub too hard.
6. Shake off excess water: Once it’s rinsed, gently shake the filter over a sink or tub to get rid of extra water. You can also use a soft, dry cloth to blot some of the moisture.
7. Let the filter dry: Lay the filter flat in a clean spot, away from direct sunlight. Let it air dry completely. You don’t want any lingering moisture that could lead to mold or bacteria when you put it back.
8. Reinstall the filter: Once it’s totally dry, slide the filter back into the mini split system the right way. Make sure it lines up with any notches or guides so it fits snugly.
9. Close the panel and turn it back on: Secure the front panel and plug the unit back in. Run the mini split briefly to make sure everything sounds and feels normal.

When to replace your mini split air filters

Even the best filters wear out over time or get so dirty that cleaning doesn’t do the trick anymore. It’s a good idea to check the filter’s condition each time you clean it. If you spot serious damage or stains that won’t wash out, it might be time for a new one.

Also, keep an eye on the recommended lifespan of your filter. Some last a few years, while others might only make it a few months. The manufacturer’s guidelines usually mention how long a filter should last. If your filter looks worn out, replacing it sooner rather than later can save you trouble down the road.

How often you should clean the filters can vary, but checking them every month or two helps you catch dirt buildup early. If you live in a dusty area or have pets, you might want to clean them more often. A quick vacuuming every few weeks can go a long way.

Maintain your appliances

If you need any replacement parts for your appliances, you can enter your model number at AppliancePartsPros.com to locate and order them. Most orders arrive in just two business days, and we have tons of great information in our repair help section and YouTube videos to help you troubleshoot.

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