Fresher kitchen thanks to charcoal filters The charcoal filter of ventilating air cleaners ensures that the kitchen remains odor-free. The filter removes steam and fat from cooking. To ensure the best performance of the air purifier, replace the filter regularly. The Charcoal filter offers a carbon filtration process in recirculation hoods, that allows active carbons to remove odors and absolves grease while cooking so you can have your kitchen free from cooking odorous, guaranteeing air purification and a pleasant cooking environment. To ensure the best performance, replace the filter regularly.