Customer Questions and Answers for Hood Charcoal Filter 3-Pack by Whirlpool

This is a set of three charcoal filters designed for recirculating range hoods that do not vent to the outside. The activated charcoal absorbs cooking odors and smoke as air passes through the filter. Replace these filters every six months or sooner if you notice lingering cooking smells, reduced airflow, or the filters appear visibly dirty or saturated.