Range hood filters are designed to trap grease before it reaches the hood's motor and ductwork — but only when they're regularly cleaned. A saturated filter loses suction effectiveness and becomes a fire hazard. Cleaning takes under 20 minutes and should be done every 1–3 months depending on how often you cook.
Identify Your Filter Type
- Aluminium mesh filters — the most common type in residential range hoods. Silver mesh screens. Fully washable.
- Baffle filters — found in higher-end hoods. Stainless steel channels. Also washable.
- Charcoal/carbon filters — used in ductless range hoods to filter air that is recirculated back into the room. These cannot be washed — they must be replaced every 3–6 months.
This guide covers aluminium mesh and baffle filters. For charcoal filters, check your hood's manual for replacement intervals.
The Baking Soda and Hot Water Method
This is the most effective home method for removing baked-on grease without harsh chemicals.
- Bring a large pot of water to a boil
- Remove filters from the range hood (most slide out or unclip easily)
- Pour the boiling water into a sink or large heat-safe basin
- Add 2–3 tablespoons of baking soda — it will fizz with the hot water
- Submerge the filters and let them soak for 10–15 minutes
- Scrub with a non-abrasive brush or stiff kitchen brush to remove loosened grease
- Rinse under hot running water
- Repeat the soak if the first pass doesn't fully remove buildup
- Allow to dry completely before reinstalling
Alternative: Dishwasher Method
Many aluminium mesh filters are dishwasher-safe (check your hood's manual). Run them on a hot cycle with regular dishwasher detergent. This works well for maintenance cleaning; the baking soda soak is better for heavy grease buildup. Note: repeated dishwasher cleaning can discolour aluminium filters over time.
Cleaning the Hood Interior
While the filters are out, wipe the interior of the range hood with a degreaser-dampened cloth. Grease collects on the interior surfaces and around the fan blades. This is easier to clean once the filters are removed and you have access to the interior.
How Often to Clean Range Hood Filters
- Light cooking (2–3 times/week): every 2–3 months
- Moderate cooking (daily): every 4–6 weeks
- Heavy cooking (daily, frying/stir-frying): every 2–4 weeks
Range hood filters are part of Maidless's deep cleaning service in Toronto. Book a Toronto deep clean — flat-rate, HST included.