Why hood filters matter more than people think
Extraction filters trap airborne fat so it doesn't coat your ceiling and cabinets. Once saturated, they stop trapping, airflow drops, and the accumulated grease sits directly above an open flame. Most manufacturers recommend degreasing filters every one to three months.
Cleaning filters and the hood canopy
- 1
Cool the surface and clear loose debris
Make sure the range hood is completely cool to the touch and brush or wipe away loose crumbs and ash so the foam reaches the grease itself.
- 2
Spray an even coat of GreaseKiller™
Hold the bottle 4–6 inches away and cover the greasy area with a thin, even layer of foam. Don't flood it — the foam is designed to cling and work.
- 3
Wait about two minutes
The formula gets under carbonised grease and breaks its bond with the metal. Heavy, long-neglected build-up may need 4–5 minutes or a second coat.
- 4
Wipe with a damp cloth
Wipe in one direction with a damp microfibre cloth or paper towel. A soft brush helps on textured cast iron. Rinse afterwards and dry.
Don't forget these spots
- The underside canopy where the filter sits
- The fan housing rim you can reach with a cloth
- The stainless front, wiped with the grain to avoid streaks
- Cabinet doors directly beside the hood — they collect the same film

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