Published at Monday, 28 January 2019. Kitchen Window and Ventilation Hood. By Pedersen Wilda.
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.
Every time an exhaust fan removes air from your house, an equal volume of air must enter. The air that enters cracks in a home’s envelope to replace air that is exhausted is called “makeup air.” Two trends affecting makeup air are causing increasing problems for homeowners: homes are getting tighter, and range-hood fans are getting more powerful.
As houses have become better insulated, and with high-BTU commercial-style ranges ever more popular, proper ventilation has become an increasingly important issue. Picking the right hood requires you to take into account the power of your range and the way you use it, but it's also a huge style decision for your kitchen.
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