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MHRV

  • 22-12-2008 2:24pm
    #1
    Slates
    Registered Users, Registered Users 2 Posts: 344 ✭✭


    Has anyone actually used MHRV in their house, if so what kind of feedback do you have? Is it worth getting etc...


Comments

  • #2
    Home4Life
    Closed Accounts Posts: 51 ✭✭Home4Life


    Slates,

    I am embarking upon it in the refurb of a 50 year old house.
    What I'm finding is that its fairly standard for new timber build,
    but almost no-one has done it on older houses...
    I am going to do it anyway as I think its a superb idea.

    Did you install it?


  • #3
    Technophobe
    Registered Users, Registered Users 2 Posts: 1,076 ✭✭✭Technophobe


    Just starting a new build (blocks) and intend (upon advice) to install this...Now (I think!!) I know that the function of it is to remove stale air from rooms and replace it with fresh air...Is that correct....?

    Does it operate in all rooms of the house? and once installed correctly, is that it? Or is there maintenance, a ccontrol panel to operate or stuff like that...

    Would appreciate a short description on it, and don't mean to hijack thread, just want to understand it...:D


  • #4
    sunnysoutheast
    Registered Users, Registered Users 2 Posts: 2,072 ✭✭✭sunnysoutheast


    The systems essentially remove warm, often moist, stale air from bathrooms, kitchens, laundries etc. and pass it through a heat exchanger with fresh air drawn from outside. In this way the incoming fresh air is warmed and is delivered to the living rooms such as bedrooms.

    The systems have removable filters which need to be replaced periodically.
    Some models have a boost function which can be used after showers etc. and turn off after a timed period. Some models have a bypass core which means there is no heat exchange in summer.
    Note that you can not extract cooking fumes and these systems are not the same as ducted heating.

    Things to watch are:
    - The system needs to be balanced so that there is a suitable airflow through the house.
    - The more airtight your house is, the more efficient the systems are.
    - You need room-sealed stoves (i.e. no open fireplaces) and that the HRV will either deliver enough air or a stove with a separate air supply.
    - Make sure inlets are away from chimneys etc.
    - Ensure smooth rigid ducting is used as much as possible.

    We fitted HRV and are very happy with it. Anything is better than having vent holes in your walls.

    There are professionals on here who will be able to advise you on their impact on BER ratings etc.

    SSE


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