Published at Tuesday, 15 January 2019. Kitchen Window and Ventilation Hood. By Ulf Madsen.
Eyesore no more! In recent years, kitchen range hoods have evolved from grimy eyesores to works of art. And why shouldn't an appliance of such large size also make a big (stylish) statement? Today, kitchen vent hoods are available in all shapes, sizes, and materials (hello, copper!) that can either draw the eye or blend right in with the surroundings.
Some Passivhaus builders are experimenting with range-hood fans that don’t exhaust air to the exterior. Instead, they pull air from above the stove and pass it through a charcoal filter before returning the air to the kitchen. On the ceiling of the kitchen, in a location as far from the stove as possible, they also install a grille connected to the exhaust system of the home’s HRV.
Broan recommends installing an outdoor air duct connected to a grille mounted on the kitchen wall or connected directly to the return plenum of your furnace; the motorized damper is installed in the duct. One 8-inch-diameter duct works for a range hood rated up to 1,000 cfm. If your range hood is bigger than that, you’ll need two ducts.
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