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UFH/GEO/HRV ADVICE

  • 19-01-2012 11:50am
    #1
    Arrahshtop
    Registered Users Posts: 6 ✭


    Hi Guys,

    Just looking for some advice

    Planning permission has gone in, fairly decent sized house. I am looking at putting in Geothermal heating system (vertical ground source heat pump) to heat underfloor heating for both the upstairs and downstairs.

    Basically what I am looking to find out will this system alone be enough for the dwellings entire hot water needs or should I look to put in a back up system of maybe the new solar thermomax tubes from kingspan for shower/sink needs etc...

    Also would a HRV unit be a good complement to the UFH/geothermal as I will also have stove in one living room and an open fireplace in the family room.

    Thanks in advanced.


Comments

  • #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,143 Mod ✭✭✭✭BryanF


    Arrahshtop wrote: »
    Hi Guys,

    Just looking for some advice

    Planning permission has gone in, fairly decent sized house. I am looking at putting in Geothermal heating system (vertical ground source heat pump) to heat underfloor heating for both the upstairs and downstairs.

    Basically what I am looking to find out will this system alone be enough for the dwellings entire hot water needs or should I look to put in a back up system of maybe the new solar thermomax tubes from kingspan for shower/sink needs etc...

    Also would a HRV unit be a good complement to the UFH/geothermal as I will also have stove in one living room and an open fireplace in the family room.

    Thanks in advanced.
    HRV (or MVHR - 'mechanical ventilation heat recovery') is first and foremost a ventilation system, that recovers the existing heat as it changes the stale internal air. it is used in air-tight homes. it neither complements or hinders UFH/geothermal

    I would respectfully suggest that you need consultancy before you make any decisions regarding your homes heating as the above post is premature.

    what is your kwh/m2/year???? until you know this you cant answer the above question. so start by carrying out your provisional BER, as this will probably dictate what you install. also consider getting a Passive house PHPP calculation done to accurately predict your energy consumption (you dont have to 'go passive' this is a design tool best used prior to planning but still a good idea to assess your homes comfort, fabric and energy consumption

    if you doubt what i saying start by reading http://www.boards.ie/vbulletin/showthread.php?t=2056520410
    and then http://www.boards.ie/vbulletin/showthread.php?t=2055996301&page=5
    best of luck with your project

    ps open fire... you'll have some fun achieving BER compliance or installing MVHR with that..


  • #3
    Arrahshtop
    Registered Users Posts: 6 ✭Arrahshtop


    Thanks for the help BryanF clearly a lot more research is needed on my behalf. And I will be getting on to it straight just one other question if you don't mind it is just on the MVHR, if you have this system in place then are you required to have the '150mm permanent vents in all habitable rooms' as stated on the plans that have been submitted to the council?

    Thanks again for your response.

    PS Looks like two stoves so!!!


  • #4
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,143 Mod ✭✭✭✭BryanF


    Arrahshtop wrote: »
    Thanks for the help BryanF clearly a lot more research is needed on my behalf.
    I would say of those that try to go it alone 1 in 10 actually do this research, the rest wish they did after they have moved in and are sitting with a draft at their feet and a large energy bill
    And I will be getting on to it straight just one other question if you don't mind it is just on the MVHR, if you have this system in place then are you required to have the '150mm permanent vents in all habitable rooms' as stated on the plans that have been submitted to the council?
    no wall vents are required with MVHR http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,1647,en.pdf

    also see here
    http://www.aecb.net/PDFs/9Jan2009_MVHR_Final-2.pdf
    and here
    http://www.greenbuildingadvisor.com/blogs/dept/musings/designing-good-ventilation-system


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