How To Clean a Greasy Range Hood Filter
Remove the filters from the hood: Most filters should easily slide or pop out of the underside of the hood.
Fill a sink or bucket with boiling water: The hotter the water, the more effective.
Pour in baking soda and dish soap: Pour a good squirt of de-greasing dish soap and 1/4 cup baking soda into the hot water. Swish around with a brush (not your hand because it’s too hot!) until the water is nice and soapy.
Put greasy filters in water: Submerge your greasy exhaust fan filters into the water. Make sure they’re completely covered.
Let them soak: Allow the filters to soak for 10 minutes.
Scrub the filters: After soaking, take a non-abrasive scrub brush and scrub the filters. Add more dish soap to your brush if required while you scrub.
Rinse and dry: Rinse the filters thoroughly in hot water and dry with a paper towel or clean cloth.
Replace the filters and repeat as needed: Put the filters back into the hood, and repeat as needed!