Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

What Heat capacity required if have MHRV?

  • 02-01-2009 6:31pm
    #1
    Home4Life
    Closed Accounts Posts: 51 ✭✭


    A quick question:

    I have decided to install MHRV as part of my refurbishment of an old house. ( as airtight as possible).

    Should I greatly reduce my heating capacity now?
    For instance, I was considering a heat pump, and may still opt for this,
    but should I go for a low kWHr capacity?

    e.g. of the MHRV efficiency is (theoretically admittedly ) 80%,
    and say allowing for a drop in 10% below that,
    does this mean I could reduce the output cvapacity of my heating system by up to 70%?

    I know new build passive houses have little or no heating system;
    as my house is 60 years old I'd be realistic about how close to passive it could be brought.

    Its a 4 bed semi, 140 m2, 2 storey, converting the attic.
    I am aiming for a B1 rating.

    COuld anyone estimate the kWhr capacity I should be shopping around for?

    Many thanks,
    H4L.


Advertisement