A hood should never be vented into spaces within walls, ceilings, attics, crawl spaces, or garages. The humidity and grease collect in the space, creating a fire hazard.

Length of Ducting


  • For maximum performance keep the duct straight and short.
  • Use the shortest route with the fewest turns
  • 45° turns are better than 90° turns.
  • Be sure to use an external roof or wall cap.

Installation Height


  • Most common installations require a range of 24" - 30" between the bottom of the hood and the top of the cooktop. This is high enough to prevent heat damage from the cooktop but low enough to still capture the airborne particulates and odors.

Ducted (Vented) versus Non-Ducted (Recirculating)


  • Ducted hoods, also known as vented hoods, require ductwork to draw the pollutants out of the home.
  • Ductless hoods, also known as recirculating or un-vented hoods rely on charcoal filters that attract and
    capture odors before the air is expelled back into the kitchen. Ductless hoods will not eliminate the heat
    and humidity from the air, but rather filter grease and odor from the air.

    • The recirculation kit mentioned in the installation instructions consists of the Air Outlet (deflector) and the Charcoal Filter. These parts can be ordered if needed.