How to Clean a Microwave Filter: Easy Step-by-Step Guide

When splatters, steam, and sticky grease build up after everyday cooking, your microwave filter can quickly become clogged and greasy. Over time, this traps odors, restricts airflow, and puts extra strain on the motor. Knowing how to properly clean microwave filter is a simple yet essential maintenance step every homeowner should have in their routine. At BlueStars Parts, we're dedicated to helping you keep your appliances running like new with the right parts, tools, and expert guidance. 

1. Microwave Filter Cleaning Supplies Checklist

Before cleaning your microwave's grease filter, it’s important to gather the right supplies to make the process easier and safer. Most experts recommend using gentle degreasers and non-abrasive cleaning tools to avoid damaging the metal mesh filter. 

If your microwave filter is too greasy, damaged, or difficult to clean completely, replacing it can help improve ventilation and reduce cooking odors. The W10208631A Microwave Grease Filter Replacement comes in a convenient 5-pack and is designed for compatible microwave models.

W10208631A Microwave Grease Filter Replacement (Source: Bluestars Parts)

2. How to Clean a Microwave Filter Step by Step

Cleaning your microwave's grease filter doesn't have to be complicated. Follow these straightforward steps to get your filter looking and functioning like new again.

Step 1: Turn off or unplug the microwave

Any time you are dealing with electric appliances, it's better to unplug them before performing maintenance tasks. Switch off your microwave and pull the plug from the wall outlet before doing anything else. This simple step eliminates any risk of electrical shock and keeps you safe throughout the entire cleaning process. 

Step 2: Locate and remove the microwave grease filter

The grease filter is usually located underneath the microwave. It is typically a metal mesh rectangle or square with a small tab. Gently slide or pop the filter out of its housing without using tools. Do not force the tabs, as microwave plastic tabs can break easily. If the filter feels stuck or you are unsure how it is secured on your specific model, check your owner’s manual before removing it. 

Remove the filter from its housing by gently sliding or popping it out (Source: Bluestars Parts)

Step 3: Soak the filter in hot water and dish soap

Place the filter in a sink or basin full of hot, soapy water. If your filter is exceptionally dirty, pour in about ¼ cup of baking soda. Let it soak for at least 10 minutes, or longer if necessary. The heat helps break down baked-on grease, so the longer you let it soak, the less scrubbing you'll need to do in the next step.

Step 4: Gently scrub away grease buildup

Once the microwave filter has finished soaking, use a dish brush or a household scrub brush to clean it more thoroughly. Use gentle pressure and take care not to bend the filter or filter frame. For particularly stubborn spots, a soft toothbrush works well to reach the corners of the mesh without causing damage. 

Use gentle pressure and take care not to bend the filter or filter frame (Source: Bluestars Parts)

Step 5: Rinse the filter thoroughly

Rinse under hot running water for 60 seconds, rotating the filter to ensure all surfaces contact the flow. Keep rinsing until the water runs completely clear with no soap bubbles remaining. Any residual soap film attracts new grease within 48 hours, so a thorough rinse at this stage goes a long way in keeping the filter cleaner for longer. 

Step 6: Let the filter dry completely

Air-dry the filter flat on a stainless-steel wire cooling rack. Drying time is a minimum of 4 hours for aluminum filters. Never reinstall a damp filter, as trapped moisture can promote mold growth and restrict airflow. Never use a hair dryer or oven to speed up drying,  thermal shock warps aluminum, and forced air drives moisture into crevices. 

Drying time is a minimum of 4 hours for aluminum filters (Source: Bluestars Parts)

Step 7: Reinstall the clean grease filter

After your microwave filter has dried, place it back into the housing slot by gently pushing it inward and using the tab to slide it forward to its original position. Give it a gentle tug to confirm it's properly locked in place. A securely seated filter ensures your microwave vents grease and cooking fumes efficiently every time you cook. 

Step 8: Replace the filter if it is bent, damaged, or still greasy

If your grease filter breaks or is physically damaged, it is best to replace it as soon as possible to prevent grease from entering the vent system of your microwave. The same applies if the filter remains discolored or greasy even after a thorough cleaning, at that point, no amount of scrubbing will restore its effectiveness. 

When it's time for a new one, the WB06X10309 WB06X10359 ME17R7021ES/AA Microwave Grease Filters Replacement is a smart, cost-effective solution. Designed as a direct replacement for compatible GE and GE Profile over-the-range microwaves, this 5-pack means you'll always have a fresh filter ready to go - no more last-minute searches when your current one gives out. 

The WB06X10309 WB06X10359 ME17R7021ES/AA Microwave Grease Filters Replacement (Source: Bluestars Parts)

>>> Read more: How To Clean & Maintain a Microwave: The Ultimate DIY Guide

3. Grease Filter vs Charcoal Filter: Which One Should You Clean?

Most over-the-range models actually have two filters, including a charcoal filter and a grease filter. The charcoal filter is usually found near the top of the microwave behind a vent grill, while the grease filter is located underneath the microwave, facing toward the stovetop. 

A quick visual check can help you tell them apart:

• Grease filter: Metal mesh filter, usually silver or aluminum-colored

• Charcoal filter: Black or dark porous panel, often located behind the upper vent grill

While both play an important role in keeping your kitchen air clean, they require completely different types of care. The grease filter is washable and reusable as long as it remains undamaged, while the charcoal filter should never be washed - it needs to be replaced once it becomes saturated, starts retaining odors, or has been in use for too long. 

3.1 Microwave grease filter

The microwave grease filter traps grease, smoke, and food particles before they enter the vent system. Since it is usually made of aluminum mesh, you can remove, soak, scrub, and reinstall it as part of regular microwave maintenance. You should:

• Clean it monthly if the filter is still intact

• Replace it if it is bent, broken, rusted, or has grease stains that will not wash out

• Avoid reinstalling it while wet because trapped moisture can affect the vent area

A clean grease filter helps the exhaust fan work more efficiently and keeps grease buildup from spreading inside the microwave vent system.

3.2 Microwave charcoal filter

The microwave charcoal filter helps reduce cooking odors in over-the-range microwaves that recirculate air back into the kitchen. Unlike a grease filter, it cannot be washed because water can damage the charcoal material inside. You should replace the charcoal filter when: 

• It has been used for about 6 months

• Cooking odors remain after the microwave runs

• The filter looks greasy, shiny, dark, or clogged

• The microwave is recirculating air instead of venting outside

If your microwave uses a GE-compatible charcoal filter, the JX81H/WB02X10956 Microwave Charcoal Filter is a reliable direct replacement that fits securely and restores your microwave's odor-filtering performance right away. 

JX81H/WB02X10956 Microwave Charcoal Filter (Source: Bluestars Parts)

For Whirlpool and Maytag over-the-range models, 8206230A Microwave Charcoal Filter is a compatible, high-quality option that makes filter replacement quick and hassle-free. 

8206230A Microwave Charcoal Filter (Source: Bluestars Parts)

4. Frequently Asked Questions

4.1. Where are microwave filters located?

Microwave filters are usually located underneath over-the-range microwaves, right above the stovetop. These are typically grease filters designed to trap oil, smoke, and cooking particles. Some models also have charcoal filters placed behind the front vent grille or above the microwave door to help remove odors from recirculated air. 

4.2. Can microwave filters be washed in the dishwasher?

Many metal grease filters can be safely cleaned in the dishwasher, especially aluminum or stainless steel mesh filters. However, charcoal filters are not washable and must be replaced when dirty. Since cleaning instructions vary by brand and model, it is always best to check the microwave’s user manual before using a dishwasher.

4.3. Do All Microwaves Have Filters?

Not all microwaves have filters. Countertop microwaves often do not include ventilation filters because they are only designed for heating food. Over-the-range microwaves, on the other hand, almost always have grease and sometimes charcoal filters because they also function as kitchen ventilation systems. 

Keeping your microwave filter clean is an easy but important step in maintaining strong ventilation, reducing kitchen odors, and helping your microwave run more efficiently. If your current filter is damaged or too clogged to restore, Bluestars Parts offers high-quality replacement microwave filters designed to fit a wide range of popular microwave models.

Contact information:

8 The Green, Ste A, Dover, Delaware 19901-3618, United States

Website: https://bluestarsparts.com/