Recirculation Mode: With the right accesory, your kitchen can eliminate foul odors. Close Can convert to Recirculation Mode Converts to Recirculation Mode with Accessory Kit (Separate Purchase Required), Can convert to Recirculation Mode, Get rid of odors with charcoal, Absorbs Odors with Charcoal: air is passed through a charcoal filter that decreases bad odor. Close Get rid of odors with charcoal When the vent hood is installed in recirculation mode, the air is picked up and passes through multiple filters including the charcoal filter that absorbs odors. This freshened air is then pushed back into the kitchen. Over time, activated charcoal particles saturate and stop blocking off odors leaving your kitchen with strong smells., Filters that are Dishwasher Safe