How to Clean a Range Hood Grease Filter
A greasy range hood filter is a fire risk and the reason your kitchen fan feels useless. Here's how to degrease it in 20 minutes with stuff you already own.
The metal filter in your range hood catches airborne grease so it doesn't coat your kitchen — but only if it's clean. A clogged filter can't pull smoke and steam out of the kitchen, makes the fan strain, and turns into a fire hazard sitting directly over your burners. The good news: degreasing it takes about 20 minutes with things you already own.
Why it matters
Every time you cook, grease vapor rises and collects in the hood's mesh filter. As it builds up, three things happen: the hood stops venting effectively (so smoke and odors linger), the fan motor works harder, and a layer of flammable grease accumulates right above an open flame. A clean filter fixes the first two and removes the fire risk entirely.
The 20-minute degrease
- Remove the filters. Slide or unclip the metal mesh filters from the underside of the hood — most release with a simple latch or handle.
- Fill a sink or tub with the hottest tap water you can get; heat softens grease.
- Add a degreaser. A squirt of dish soap plus about ¼ cup of baking soda handles most buildup. For heavy, sticky grease, use a dedicated degreasing cleaner.
- Soak 10–15 minutes, then scrub with a non-abrasive brush until the mesh runs clear.
- Rinse thoroughly, dry completely, and reinstall.
Owner Tools tracks this as clean the range hood grease filter.
Dishwasher option: metal mesh filters can go in the dishwasher on a hot cycle for light grease — but aluminum filters may darken from the detergent, so hand-wash those.
If a clean filter doesn't fix the airflow
- Recirculating hood: some hoods don't vent outside — they pass air through a charcoal filter and back into the kitchen. That charcoal filter can't be washed; it's replaced every few months.
- Blocked exterior vent: if your hood vents outdoors, check that the exterior flap (damper) isn't stuck shut, painted over, or blocked by a bird nest.
- Worn fan: an old, weak fan motor moves little air even when everything's clean.
Keep the whole kitchen in rhythm
The range hood is one of several kitchen jobs that quietly pile up. Pair it with cleaning the dishwasher filter, vacuuming the refrigerator coils, and changing the refrigerator water filter. A clean kitchen exhaust also matters for fire safety — see home emergency: what to do for the worst case, and the appliances overview for the full routine.
Make it automatic
Build your free Owner Tools plan and we'll put the range-hood filter, dishwasher filter, and fridge coils on a simple monthly-and-seasonal rhythm so the kitchen stays clean and safe. No login, no address required.