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Whole-life costs of a Passivhaus: from 2014

Comments

  • #2
    Lumen
    Registered Users, Registered Users 2 Posts: 31,218 ✭✭✭✭Lumen


    I figure that £300/year of UK gas for a "traditional" (non-passive) 88.5m2 dwelling built to current regs amounts to about 8160kWh, or 92kWh/m2.

    In Ireland that would cost about €500.

    But we have bigger houses. 120sqm would be €640, 180sqm would be €920, (simply scaling up, but I assume larger buildings are more efficient). All numbers include standing charges.

    Are regular new builds hitting those numbers in practice? I've seen some posts on here with new house owners reporting multiples of that.

    I'd guess that a Passivhaus is more likely to meet the calculations than a regular new build...?


  • #3
    jimmy_t
    Registered Users, Registered Users 2 Posts: 149 ✭✭jimmy_t


    What is the failure mode for plastic duct work?


  • #4
    Calahonda52
    Registered Users, Registered Users 2 Posts: 12,881 ✭✭✭✭Calahonda52


    jimmy_t wrote: »
    What is the failure mode for plastic duct work?
    Don't know, I was surprised, given the amount of it floating around in the pacific :)

    “I can’t pay my staff or mortgage with instagram likes”.



  • #5
    Dudda
    Registered Users, Registered Users 2 Posts: 1,541 ✭✭✭Dudda


    jimmy_t wrote: »
    What is the failure mode for plastic duct work?

    I asked the same question here
    https://touch.boards.ie/thread/2057882890/1/#post107279315

    It makes no sense to me. We use plastic pipes for waste that don't fail after 10 or 15 years so why should they for ventilation?


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