The filtered air is returned back into the room via vents on the front of the rangehood or a duct kit.

For ducted rangehoods the air is directed to the outside, but recirculating rangehoods return the filtered air back into the room via vents on the front of the rangehood or a duct kit.

For recirculating rangehoods carbon filters remove odours. For frequent oil based cooking, the filters should be changed approximately every 2 months, for cooking that involves mainly boiling or steaming with little oil based cooking, the filters should be changed less frequently.

It uses a blower wheel.

It uses a propeller style blade.

It is recommended that retracta rangehood be ducted externally, they may be ducted to recirculate into the kitchen but the best results are achieved by external ducting.