EXTRACTION MODE (DUCTED OUTSIDE):
The fan draws the vapors produced during cooking into the hood, where they pass through the grease filter and into the open air. The grease filter absorbs the grease contained in the vapours produced during cooking keeping the kitchen almost totally free from grease and odours.
Where it is not possible to vent the hood to the outside, the hood can operate in the recirculation mode. The fan draws the vapours produced during cooking into the hood, where they pass through the grease filter and then through the carbon filter before the clean air is discharged back into the kitchen. The grease filter absorbs the grease while the activated carbon filter absorbs any odours. To operate the hood in this mode it is necessary to install an activated carbon filter.
If possible, we recommend you have your hood ducted out. A ducted hood will perform slightly better than a ductless (or recycling) hood. Moreover, a ducted hood removes steam and condensation from your kitchen. A ducted hood traps dirt and fats in a grease filter before removing the air from your kitchen. Most grease filters can be cleaned in a dishwasher to prevent dirt building up and reducing extraction performance. Charcoal filters need to be replaced on a regular basis.
A hood used in recirculation mode has charcoal filters in addition to a grease filter. The charcoal filter absorbs cooking odours. A hood in recirculation mode recycles the air back into your kitchen after the filters have purified the air. This means that steam is recycled back into your kitchen.