How to Clean Range Hood Filter

Why the Range Hood Filter Needs Regular Cleaning

The range hood filter (also called the grease filter or mesh filter) sits above your stovetop and captures grease, smoke, and cooking vapors before they circulate through your kitchen. Over time, the filter becomes saturated with grease — a clogged filter can no longer capture new grease effectively, reducing the range hood's performance and creating a fire hazard. Grease-saturated filters are also a significant kitchen fire risk. Cleaning the filter monthly keeps your range hood working at full efficiency and your kitchen safer.

Types of Range Hood Filters

• Aluminum mesh filters: The most common type. Reusable and washable. Usually silver-colored mesh panels.
• Baffle filters: Found on higher-end range hoods. Stainless steel panels with a baffle design. Very durable and easy to clean.
• Charcoal/carbon filters: Found on ductless range hoods. These are NOT washable — they must be replaced every 3–6 months.

This guide covers cleaning aluminum mesh and baffle filters. If your range hood is ductless, check whether it uses charcoal filters — these cannot be cleaned and must be replaced.

What You'll Need

• Dish soap and very hot water
• Baking soda
• Degreaser spray
• Soft brush or old toothbrush
• Rubber gloves
• Microfiber cloth

Very hot water is essential for dissolving range hood grease — cold or warm water is much less effective. A generous amount of dish soap combined with baking soda creates a powerful degreasing soak. For heavily clogged filters, Krud Kutter degreaser cuts through baked-on grease quickly. Always wear rubber gloves — range hood grease is thick and difficult to remove from skin.

Step-by-Step: How to Clean a Range Hood Filter

Step 1: Remove the Filters

Turn off the range hood and allow it to cool. Most filters slide out or unclip from the underside of the range hood — push the filter toward the back and tilt it down to remove. Some models have a latch or button. Check your manual if unsure.

Step 2: Inspect the Filters

Hold the filter up to the light. If you can see light through the mesh clearly, the filter is moderately dirty. If the mesh is completely opaque with grease, it needs a thorough soak. If the filter is bent, torn, or the mesh is damaged, replace it.

Step 3: Boiling Water and Baking Soda Soak (Most Effective)

This is the most effective method for dissolving range hood grease:

Step 1: Place the filter in a large sink, basin, or bathtub. Boil a kettle of water.

Step 2: Pour the boiling water over the filter to cover it. Add ¼ cup of baking soda and a generous squirt of dish soap. The baking soda will fizz — this reaction helps break down the grease.

Step 3: Let soak for 15–30 minutes. The hot water and baking soda dissolve the grease from the mesh.

Step 4: Use a soft brush to scrub the filter, working the bristles through the mesh. Most grease will have dissolved and the filter should look significantly cleaner.

Step 5: Rinse thoroughly under hot running water. Repeat the soak if the filter is still heavily clogged.

Step 4: Degreaser Method (For Very Heavy Buildup)

For filters with thick, baked-on grease that the baking soda soak doesn't fully resolve:

• Spray Krud Kutter degreaser directly onto the filter.
• Let sit for 3–5 minutes.
• Scrub with a brush and rinse thoroughly with hot water.
• Follow with a dish soap rinse to remove all degreaser residue.

Step 5: Dishwasher Method

Many aluminum mesh and baffle filters are dishwasher-safe — check your range hood manual. Place the filter on the bottom rack and run a hot cycle with extra dish detergent. The dishwasher's hot water and detergent dissolve grease effectively. This is the most hands-off method for moderately dirty filters.

Step 6: Dry Completely

Shake off excess water and allow the filter to air dry completely before reinstalling. A wet filter reinstalled in the range hood can drip grease-water onto the stovetop and promote rust.

Step 7: Clean the Range Hood Interior

While the filters are out, wipe the interior of the range hood with a cloth dampened with degreaser or dish soap solution. Grease accumulates on the interior walls and the fan housing. Wipe clean and dry before reinstalling the filters.

How Often Should You Clean the Range Hood Filter?

• Monthly for daily cooking.
• Every 2–3 months for lighter use.
• Immediately if the range hood seems less effective or you notice more smoke and grease in the kitchen.
• Replace charcoal filters every 3–6 months — they cannot be cleaned.

Final Thoughts

The range hood filter is one of the most important — and most neglected — kitchen maintenance tasks. A monthly boiling water and baking soda soak takes 30 minutes and dramatically improves range hood performance and kitchen safety. Keep the filter clean and your range hood will effectively capture grease and smoke for years.