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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.

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    • CommentAuthorCharli
    • CommentTimeMay 1st 2021 edited
    My heating programmer has gone kaput, so I'm investigating possible replacement options. Like-for-like replacement is easy, but is there something better/more energy saving/etc?

    Gas central heating, with a system boiler and a hot water tank. All radiators upstairs and downstairs on one zone. Wax TRVs on all radiators (except the bathroom towel rail). We rarely use the hot water tank as the kitchen has an electric-tap, and we have an electric shower- no one ever uses the bath.

    I'm not really sure what would be classed an improvement? Upstairs gets hotter than downstairs- would TRVs that could split them into 'zones' be useful? I don't care for an app that controls my heating (I don't have a smart phone).

    Having more precise controls would be good- I work from home 2 days a week and from the office for 3- but the old controller could only do different settings for weekdays/weekends.

    Any ideas or experiences I should consider?

    PS: My OH is an electrician, so 'easy to fit' doesn't have to be a consideration
    • CommentAuthortony
    • CommentTimeMay 1st 2021
    Honeywell programmable room thermostat T4
    • CommentAuthorphiledge
    • CommentTimeMay 1st 2021
    +1 for Honeywell programable stats. We have a mix of CM67/CM907 both 7 day with differing programs for each day.
    Worth splitting into two or more zones - we use every room except the lounge in the morning, so heat those, and
    then also heat the lounge in the evening. Except on the days when we WFH in the lounge, then that is heated midday.

    If you don't want to add zone valves into the plumbing, then put electronic programmable TRVs on the rooms that you don't want to heat all of the time.
    • CommentAuthorDavidND
    • CommentTimeJul 2nd 2021
    Interesting responses to this question. I note not one person has asked what type of boiler is installed...

    Fact is, modern boilers can be both ranged and modulated and doing so will save lots of energy. Tying the flow temperature to outside air temperature will save yet more and do far better than fitting electronic TRVs.
    • CommentAuthorMike1
    • CommentTimeJul 2nd 2021 edited
    Posted By: DavidNDmodern boilers can be both ranged and modulated and doing so will save lots of energy.

    Thanks to this link posted elsewhere by Simon Still, it sounds like 'can be' is the important bit there.
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