Do kitchen exhaust fans need to be vented outside?

Range hoods do not have to be vented to the outside. But, ducted range hoods are almost always preferred over ductless hoods. They remove all the smoke and cooking exhaust from your kitchen, while ductless hoods recirculate your cooking exhaust back into your kitchen.

Are ventless hoods any good?

Unvented range hoods do filter some grease and cooking odors from the air, but the general consensus is that they’re nowhere near as effective. Nor do they remove heat and humidity, so they won’t help keep your kitchen cool while you cook.

How do you attach a range hood vent to the wall?

Install your ductwork in the shortest unobstructed path to the outside of your home. Cut a hole 1-2 inches larger than your ductwork where you’ll run the duct from your hood. Attach the range hood to your ductwork. Attach a wall or roof cap to the exterior wall or roof.

Where should a kitchen exhaust fan be placed?

The exhaust fan is typically located directly over the kitchen stove and is installed in a range hood or cabinet, integrated with a microwave oven, or mounted on the wall. The fan should be ducted to exhaust outside of the home, not into the attic, crawlspace, or another area inside the building.

Do I need a hood over my stove?

Do I need a range hood for a gas stove? Yes. Gas stoves produce intense heat and smoke, so you need a kitchen fan that can vent heavy cooking exhaust outside your home. Buy a range hood that is at least 900 CFM to keep your kitchen air clean and fresh.