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DCV - will my house be cold??!

  • 10-03-2019 8:07am
    #1
    Acemc3
    Registered Users, Registered Users 2 Posts: 3 ✭


    Hi,
    I have had an ongoing problem with mould in my house for a few years. Ventilation is my problem according to a survey. I rang a mould company who recommended DCV (probably because my house isn't as airtight as would be required for MHRV) my house is a 40 yr old 2 storey. I was happy enough to go ahead with dcv.

    But then friends had installed MHRV when they built their extension. They have to close off some of their vents letting air in as the air is so cold.. So if that's supposed to be warm air, my concern is my DCV system going to make my house awfully cold?

    Thanks!


Comments

  • #2
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    How many vents are currently in your house?

    You can instal core vents which won’t allow large drafts in, Godwin’s sell them. I installed a couple, am very happy. https://www.goodwins.ie/products/anti-draught-black-hole-ventilator-bm725-white-3461398.html

    I prefer fresh air rather than warm stale air., many Irish people seem to like blocking vents. Most builders in times gone by installed very large vents for the space, or allowed the wall cavity also vent into the room.

    If your house is cold you have other issues. I’ve seen houses with no vents destroyed by mold, don’t know how people were living in them.


  • #3
    Poll Dubh
    Registered Users, Registered Users 2 Posts: 1,145 ✭✭✭Poll Dubh


    Are your walls insulated? There is a myth that ventilation on its own cures mould. If your walls are cold then water vapour will continue to condense on them.


  • #4
    Acemc3
    Registered Users, Registered Users 2 Posts: 3 ✭Acemc3


    Thanks a million. I have no wall vents at all!!. All I have is a good fan in the bathroom which I leave on all day for now but it's not enough. My house isn't cold at the minute, I'm afraid the DCV will cause it to become very cold


  • #5
    Acemc3
    Registered Users, Registered Users 2 Posts: 3 ✭Acemc3


    Poll Dubh wrote: »
    Are your walls insulated? There is a myth that ventilation on its own cures mould. If your walls are cold then water vapour will continue to condense on them.

    Yes they're insulated, but because it wasn't me that insulated them, maybe I should have an insulating Co. come out and check if they're insulated properly. Thanks!


  • #6
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,401 ✭✭✭DublinDilbert


    Fit the ventilators I linked to above if your worried about drafts. You definitely need vents fitted if you have none.

    I’d be getting at least two downstairs fitted and one in each bedroom. If your house is red brick you can get a wall vent the size of a brick. Then just cut out one brick and cement it in. Core drill might also be an option.


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