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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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    • CommentAuthorsmudger
    • CommentTimeSep 10th 2021
     
    We already have pv. Thinking about installing solar thermal. What are the typical costs for a 4 sqm system? We already have a solar ready cylinder linked to gshp. Need to make decision soon as RHI payments are being switched off and suppliers are busy do will probably have to commit in the next month.

    (What’s also off outing is seeing the number of posts offering removed systems)
    • CommentAuthorphiledge
    • CommentTimeSep 10th 2021
     
    I dont know how it fares for space heating but our 30 tube system has done 99% of our DHW for 6 months of the year since 2006. Contributes to DHW for the rest of the year. Worked faultlessly throughout with a fluid change after 10 years. Self installed with no RHI and associated inflated prices!!
    • CommentAuthorJeff B
    • CommentTimeSep 10th 2021
     
    Posted By: philedgeI dont know how it fares for space heating but our 30 tube system has done 99% of our DHW for 6 months of the year since 2006. Contributes to DHW for the rest of the year. Worked faultlessly throughout with a fluid change after 10 years. Self installed with no RHI and associated inflated prices!!


    More or less ditto here. Filsol flat-plate system, 14 years old, so pre-RHI. Provides practically all DHW from May to September. Very little maintenance required, just an occasional check on the pH of the glycol solution. If I had my time over I would have opted for an Immersun type device I think, mainly because it is one less plumbing system to think about! Don't know if such things were available back in 2007?
    • CommentAuthorjms452
    • CommentTimeSep 10th 2021
     
    Posted By: Jeff BIf I had my time over I would have opted for an Immersun type device I think, mainly because it is one less plumbing system to think about! Don't know if such things were available back in 2007?


    Proportional solar diverters weren't really available then and in 2007 the PV would have been really pricey - like 4kW £20k pricey.

    At the time the smart money would have been on solar thermal (probably DIY) :bigsmile:
    •  
      CommentAuthordjh
    • CommentTimeSep 10th 2021
     
    Posted By: smudgerWhat’s also off outing is seeing the number of posts offering removed systems

    Not being in the market for such things, I haven't seen those. Why are people removing them?

    If you already have PV, do you also have a diverter? How much of your hot water do you get from that? What is the purpose of the proposed solar thermal? etc etc. More information please!
    • CommentAuthorEd Davies
    • CommentTimeSep 10th 2021
     
    With the demise of Navitron the source of DIY solar-thermal kit which springs to mind would be:

    https://www.bimblesolar.com/extras/thermal

    to give you some idea of the cost of the hardware hence how much of any quotes are for installation labour and MCS “tax”.
    • CommentAuthorrevor
    • CommentTimeSep 12th 2021
     
    My system been in use for 2 years flat panel Velux to match roof windows. System no longer available in UK. DIY job but had roofers help me put panels in place as were heavy. Panels been in for about 7years before commissioning build taken a long time. Get all our hot water from Beginning of May to end September last year topped up on about 2 occasions with 10 min burn of gas boiler. This year not needed to use gas. As the TS also feeds the ufh will get some contribution to that but probably v small. Had quite a bit of help from this forum when I was setting up the controls the programmer was quite difficult to understand without the guidance from here as to how the control system works. Cost was about £2000 for the bits. 5sqM
    Have heard horror stories of poorly performing systems but think that is down to quality of install and setting up. Have installed solar PV this year and do not put surplus generation to the TS as have battery to store the excess solar and any bits left goes as export.
    • CommentAuthorsmudger
    • CommentTimeSep 12th 2021
     
    Thanks for the feedback everyone
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