Range Vent Hood Basics - How They Work
The metal/glass shroud acts as a deterrent to the spread of a stovetop fire, and helps to collect cooking fumes. The fans come in two varieties, rotary or centrifugal and performs either of two actions:
- For an external/outside vented system, it draws fumes and odors up or down--depending on the style of vent hood--through a grease filter inside a duct system and out of the house.
- For systems without external/outside venting, fumes and odors are drawn over an activated-charcoal filter and re-circulates the air, back into the room.