A range hood filter gradually collects grease even when the hood still appears clean. Cleaning it improves airflow and reduces residue, but the filter should be handled according to the appliance manual and kept away from harsh chemicals that can damage aluminum or finishes.
Remove the filter safely
Turn off the hood and let the cooking surface cool completely. Release the filter using its latch and support it with both hands. Photograph the orientation if the filter has a specific direction, and check whether it is metal, charcoal, or a disposable type.
Choose the approved method
Many metal filters can be washed with hot water and a degreasing dish soap. Some are dishwasher-safe, while charcoal filters generally need replacement rather than washing. Avoid mixing cleaners, using caustic oven cleaner, or scrubbing delicate mesh aggressively.
Soak and brush gently
Place the filter in a sink or tub, apply the approved cleaner, and allow it to loosen the grease. Use a soft brush along the mesh and frame. Rinse thoroughly until no slippery residue remains, then inspect for bent mesh, corrosion, or a loose frame.
Dry before reinstalling
Allow the filter to dry completely on a towel before refitting it. A wet filter can trap dust and cause drips into the hood. Clean the surrounding hood and fan opening with a damp cloth, keeping liquid away from controls and wiring.
Set a calendar reminder based on cooking frequency. If airflow remains weak, the fan is noisy, or grease has reached the duct, arrange a deeper service rather than relying on repeated filter washing.