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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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    What are the existing ones you want to replace?

    What are they spending now on getting blown bulbs replaced, does the company call out electrician to do it?

    How about motion switches?
    • CommentTimeMay 23rd 2021
    What Will says. For example, we need to know a lot more about how they are serviced before deciding whether making them all the same is sensible or not.
    • CommentAuthortony
    • CommentTimeMay 23rd 2021
    Very old fluorescent , not serviced at all!
    • CommentTimeMay 23rd 2021
    So they don't repair/replace lamps when they fail? They just live with dark spots/rooms?
    Tony, if they replace fluorescents with more fluorescents or LEDs, they won't save electricity/carbon/money.

    Is that really what they were hoping? Or do they need replacing anyway, for looks or for emergency lighting?

    Electricity is dramatically less carbon-intensive than it was even a few years ago, so there's less environmental benefits now from scrapping and replacing existing fittings. Just avoid halogen downlighters.
    • CommentTimeMay 24th 2021
    Posted By: WillInAberdeenTony, if they replace fluorescents with more fluorescents or LEDs, they won't save electricity/carbon/money.

    I understand what you're saying, but a modern T5 with an electronic ballast may be twice as efficient as an old T12 with magnetic ballast. LEDs can approach the efficiency of a T5 fitting.
    • CommentAuthortony
    • CommentTimeMay 24th 2021
    They want to replace existing fluorescents with new LED , I think it is a grid system ceiling
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