Published at Monday, January 28th 2019. by Pedersen Wilda in Kitchen Window and Ventilation Hood.
ASHRAE’s residential ventilation standard, ASHRAE 62.2, limits exhaust fans to a maximum of 15 cfm per 100 square feet of occupiable space, unless a backdrafting test is performed. According to this standard, the smallest home in which a 1,200-cfm range hood could be installed without verifying makeup air needs would be one measuring 8,000 square feet — a very large McMansion indeed.
If you have a huge family, and you indulge in commercial-scale cooking that requires a powerful exhaust fan, you’ll need to install a powered makeup air unit like those manufactured by Electro Industries of Monticello, Minnesota or Fantech. These units move a lot of air; in winter, the incoming air is cold, but it can be heated with 10,000-watt electric resistance elements if you want. Be prepared to suffer a huge energy penalty. The model EM-WH1025K from Electro Industries will supply 632 cfm at a 50 F° temperature rise. If you want a 1,200-cfm range hood, you’ll need two of these makeup air units; they cost about $1,800 each.
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.
If your range hood cover itself is simply boring, make a statement with a stylish cover. If you’re a novice woodworker, but you want to spruce up your range hood, add corbels. This old French word simply means a fixture coming out from a wall to support a structure above it. In this instance, the corbels function strictly as a decorative accent piece since your hood cover is already mounted in place. You can buy pre-made corbels or you can handcraft and install your own design and mount them under your range hood cover.
Kitchen windows present a few challenges. The windows all may not match; maybe there are casements over the sink, large double-hungs in the eating area, and a glass door to the mudroom. Go with what’s practical in each case, tying the treatments together with material or color, or a common trim or stencil. Ann Wallace of Prairie Textiles suggests bottom-only café curtains over the sink, for example, with full-length curtains in the eating area, and a panel (held by rods at the top and bottom) for the window in the door.
Lastly, think about inexpensive ways to improve the style of your kitchen windows by doing a DIY project for a fresh and modern way to make your windows standout. Something simple such as changing the color of the trim from simply a basic color can really highlight the window in a beautiful way. Instantly, it changes the frame through which you see your garden or patio-making it a priceless improvement in more ways than one.
GE went out of its way to advise range-hood installers of the best way to install a water heater or a furnace — that is, by following ASHRAE standards. Why didn’t GE bother to tell range-hood installers that ASHRAE also has something to say about the best way to install a range hood?
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