When is the last time you looked under your kitchen exhaust hood or under the microwave oven above the cooking range? A greasy filter is a fire hazard.

Failing to change a grease filter subjects you to a number of potential hazards including increased greasy buildup on the interior of your exhaust hoods, on exterior surfaces of your kitchen cabinets and walls, countertops and floors.

In addition, leaving used grease filters in place too long dramatically increases your risk of fire entering your duct work and spreading through your house.