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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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    • CommentAuthoraberned
    • CommentTimeJul 18th 2018
    Quick question (or possibly 2)....is there any recommended period for replacing the coolant in a ground loop? Mine has been in since installation over 10 years ago.

    On a related matter, I have a filter in the heat pump which I originally cleaned annually and it never had anything to speak of in it. However more recently (in the last 12 months) it has been gathering quite a lot of what appears to be rust flakes. This requires cleaning every couple of months or trips the heat pump out on high pressure. It begs the question where this might be coming from and whether I should be adding inhibitor or something to the system.

    Thoughts welcome!
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