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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

Buy individually or both books together. Delivery is free!


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  1.  
    Has anyone modified a kitchen extractor hood, to make it shut off airtight when not running?

    Ours has flaps inside it that swing closed, and more swinging flaps on the outside fitting where the duct emerges from the wall, but they are not a complete seal as I can feel a warm draught escaping out through it. (Or sometimes a cold draught creeping in, depending on wind direction).

    Has anyone fitted some kind of electric shutter that closes tightly? Or maybe a sprung shutter that can snap tightly closed?
    • CommentAuthorjms452
    • CommentTimeNov 18th 2020
     
    Not quite answering your question but we put carbon recirculating filters in our existing cooker hood and filled up the hole in the wall.

    You can buy them for a wide range of hoods (no commercial interest in this co.):
    https://www.cookerhoodfilters.co.uk/
    • CommentAuthorowlman
    • CommentTimeNov 18th 2020
     
    Can you get access to the extract ductwork?
    • CommentAuthorbhommels
    • CommentTimeNov 18th 2020
     
    Posted By: WillInAberdeenHas anyone modified a kitchen extractor hood, to make it shut off airtight when not running?

    A friend of mine (honestly) has done this. As it had to fit in a confined space, he designed a plenum chamber housing a spring loaded motorised flap. The motor power comes from the hood, opening the flap as soon as the hood is switched on.
    • CommentAuthortony
    • CommentTimeNov 19th 2020
     
    👍
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