Published at Wednesday, 30 January 2019. Kitchen Window and Ventilation Hood. By Osvald Henriksen.
Here’s the new IRC provision, which is found in section M1503.4: “Exhaust hood systems capable of exhausting in excess of 400 cfm shall be provided with makeup air at a rate approximately equal to the exhaust air rate. Such makeup air systems shall be equipped with a means of closure and shall be automatically controlled to start and operate simultaneously with the exhaust system.
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.
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.
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