Range hood filters trap grease and cooking particles, and they need regular cleaning to keep air flowing

A clogged filter makes your range hood work harder and pull less smoke and steam from your stovetop. Cleaning the filters takes 15 to 30 minutes depending on how dirty they are, and you can do it yourself with supplies you likely have at home. Most filters can be cleaned in your dishwasher or by hand, though a few types need special care.

The exact method depends on what kind of filter you have. Mesh filters (the most common) and baffle filters both handle hot water and degreaser well. Charcoal filters, which absorb odors, cannot be cleaned and must be replaced every three to six months. Check your range hood manual or look at the filter itself to see which type you own.

Key Takeaways

  • Mesh and baffle filters can be cleaned monthly in your dishwasher or by hand with hot water and degreaser; charcoal filters cannot be cleaned and must be replaced.
  • Remove the filter by pressing the release button or latch on the side of the hood, then soak it in hot water mixed with degreaser for 10 to 15 minutes before scrubbing.
  • A dishwasher set to a normal or heavy cycle cleans mesh filters well, but hand washing with a soft brush prevents damage to delicate baffle fins.
  • Let the filter dry completely before reinstalling it, or grease will drip onto your stovetop the next time you cook.
  • Clean mesh and baffle filters once a month if you cook daily, or every two to three months if you cook less often.

Identify your filter type before you start

Open your range hood and look at the filter. A mesh filter looks like a flat metal screen with a grid pattern—it catches grease and particles as air passes through. A baffle filter has curved metal fins stacked together and is thicker than a mesh filter. Both can be cleaned and reused. A charcoal filter is usually cylindrical or cartridge-shaped and is black or dark gray; it absorbs odors and cannot be cleaned.

If you are not sure, check your range hood manual. The model number is usually on a sticker inside the hood or on the back of the unit. You can search the model number online to find the manual, which will show you exactly what filter type came with your hood.

Remove the filter safely

Turn off the range hood and let it cool for a few minutes. Look for a release button or latch on the side or bottom of the filter frame. Press or slide it, then pull the filter straight down and out. Some filters slide out sideways instead—if it does not come down easily, try sliding it to one side.

If the filter is stuck, do not force it. Spray a little degreaser around the edges and wait five minutes for it to loosen the buildup, then try again. Once the filter is out, set it on a clean surface or over your sink.

Soak the filter in hot water and degreaser

Fill a bathtub, large sink, or plastic storage container with hot water—as hot as you can stand to touch. Add a degreaser: dish soap works for light buildup, but a commercial kitchen degreaser like Zep or straightforward Green cuts through heavy grease faster. Follow the product instructions for how much to use, but typically you need about one-quarter cup per gallon of water.

Place the filter in the water and let it soak for 10 to 15 minutes. The hot water and degreaser will soften the grease so it rinses away more easily. If the filter is very dirty, soak it for 20 to 30 minutes. You can soak multiple filters at once if your hood has more than one.

Clean the filter by hand or in the dishwasher

After soaking, you have two options. For a mesh filter, the dishwasher is fastest: place it on the top or bottom rack (check your manual), set the cycle to normal or heavy, and run it without dishes. The hot water and detergent will clean it thoroughly. Alternatively, scrub it by hand under running water with a soft brush or old toothbrush, working from the clean side toward the dirty side to push grease out through the mesh.

For a baffle filter, hand washing is safer because the curved fins can bend in a dishwasher. Use a soft brush and warm running water, brushing gently between the fins. Rinse from the top down so water carries grease away. If grease is still visible after rinsing, soak it again for another 10 minutes and scrub once more.

Rinse the filter under clean running water until the water runs clear and you see no soap or grease residue. Hold it up to the light—you should be able to see through the mesh or between the fins.

Dry the filter completely before reinstalling

Shake off excess water over the sink, then stand the filter upright on a clean towel or drying rack. Let it air dry for at least one hour, or until it is completely dry to the touch. Do not reinstall a wet filter—water will drip onto your stovetop the next time you cook, and moisture can cause rust on metal filters over time.

If you are in a hurry, you can speed up drying by placing the filter in front of a fan or in a warm (not hot) oven set to 150°F for 10 to 15 minutes. Make sure the filter is metal and not plastic before using the oven.

Reinstall the filter and test the hood

Once the filter is dry, slide it back into the hood the same way it came out—usually straight up, or sideways if that is how it was oriented before. You should hear or feel a click when the latch locks into place. Close the hood and turn it on to make sure air flows normally. The hood should be noticeably quieter and pull steam more effectively than it did before cleaning.

If the hood still seems weak after cleaning, the filter may have permanent damage or the motor may need service. If the filter is more than a year old and still clogs quickly after cleaning, it may be time to replace it.

How often to clean and when to replace

Clean mesh and baffle filters once a month if you cook daily, or every two to three months if you cook less often. If you fry food or cook with high heat regularly, clean them every two weeks. A dirty filter makes your hood work harder and uses more energy, so regular cleaning saves money over time.

Charcoal filters cannot be cleaned and should be replaced every three to six months, depending on how much you cook. Some range hoods have both a mesh filter and a charcoal filter stacked together—clean the mesh filter monthly and replace the charcoal filter on its own schedule.

Frequently Asked Questions

Can I put my range hood filter in the dishwasher?

Mesh filters can go in the dishwasher on a normal or heavy cycle. Baffle filters are safer cleaned by hand because the fins can bend. Charcoal filters should never go in the dishwasher—they cannot be cleaned and must be replaced. Check your manual to confirm your filter type before using the dishwasher.

What if my filter is still greasy after soaking and scrubbing?

Soak it again for 20 to 30 minutes in hot water and degreaser, then scrub with a stiff brush or old toothbrush. For stubborn buildup, try a commercial oven cleaner or a paste of baking soda and water. If the filter is more than two years old, it may be time to replace it instead.

How do I know if my charcoal filter needs replacing?

Charcoal filters do not get visibly dirty like mesh filters—they absorb odors inside. Replace them every three to six months based on how much you cook. If cooking smells linger in your kitchen even with the hood running, the charcoal filter is likely saturated and needs replacement.

What happens if I reinstall a wet filter?

Water will drip onto your stovetop the next time you cook, and moisture can cause rust on metal filters. Always let the filter dry completely—at least one hour—before putting it back in the hood.

My range hood has two filters stacked together. Do I clean them the same way?

Usually the top filter is mesh or baffle and can be cleaned monthly, while the bottom is charcoal and must be replaced every few months. Remove and clean them separately using the same method for each type. Check your manual to see the recommended replacement schedule for the charcoal filter.