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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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    • CommentAuthorowlman
    • CommentTimeSep 16th 2019
    It's true that warm air distribution emanating from the ceiling isn't the best of ideas, but the opposite is true of cooling, should you need it in summer.
    You can mitigate to some extent with the design of the ceiling or wall hung registers/units and their placement also once a circular airflow is established it's effect could be lessened.
    • CommentTimeSep 16th 2019
    Posted By: WillInAberdeenWhy would an underfloor grid of refrigerant pipes need different maintenance than the equivalent grid of hot water pipes?

    Because the consequences of a refrigerant leak are much more serious than the consequences of a water leak.
    • CommentAuthorowlman
    • CommentTimeSep 16th 2019 edited
    • CommentAuthormike7
    • CommentTimeSep 17th 2019
    I diy fitted a Hitachi 2.5kW (output) aircon around 9 yrs ago, used almost entirely for heating. Re cold feet, it is installed at just above skirting level, with a couple of bookshelves in front to conceal it. These need moving every 6 mths/yr for access to clean the air filter. I also brush the outside screen clear every year or so, and that's it. The books get a bit dusty too.

    The only problem has been a whine from the outside fan motor last year which was sorted with a pair of new ballraces - a little awkward to fit as the motor casing was glued on, but I was spurred on by the quote of £235 for a new motor vs. £10 or so for the races.

    An earlier post said that ASHPs are no good for poorly insulated houses. That might be true if you want it to do the whole job, but in my heat-leaky old house it works in tandem with a LPG CH boiler, reducing our gas consumption very significantly.

    Our DHW is via immersion, or there's the possibility of firing up the old Rayburn in the kitchen in the event of a long power cut. I toy with the idea of heating the water by fitting a heat exchanger in the thermosyphon output pipe of the Rayburn and passing the hot 'refrigerant' through that. Should be able to get the tank up to about 50C, and guaranteed not to boil without any controls. Not so great if cooling is wanted, so a valve to divert the flow would be needed.
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