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Airtight Extractor fan for cooker?

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Comments

  • #52
    Paul Kiernan
    Registered Users, Registered Users 2 Posts: 2,189 ✭✭✭Paul Kiernan


    gctest50 wrote: »
    Stick a powered valve in the extractor fan duct

    Where would I get such a thing and how is it opened and closed e.g. is it linked to the fan switch?


  • #53
    MicktheMan
    Registered Users, Registered Users 2 Posts: 2,856 ✭✭✭MicktheMan


    Paul Kiernan wrote: »
    Is this a good idea? If there's already a flow of air in and out through the MHRV won't the path of least resistance to replace the extracted air be through the MHRV? That air will at least be getting heated as it's drawn in.

    I have found that cracking open the window (which is next to the extractor) is much more effective at expelling the cooking steam / fumes / smells than not.
    Paul Kiernan wrote: »
    How can you make sure the extractor fan is airtight when it's not in use?
    We have a non return valve installed in the extractor duct. It does a reasonable job but it is not 100% airtight.


  • #54
    gctest50
    Registered Users, Registered Users 2 Posts: 9,605 ✭✭✭gctest50


    Paul Kiernan wrote: »
    Where would I get such a thing and how is it opened and closed e.g. is it linked to the fan switch?

    There is a little actuactor on the side, you can get all sorts, basically once they get power they open ( or close or or )


    Should be loads around, this should give you an idea of what i'm on about :


    http://www.ductstore.co.uk/acatalog/Damper-Units---Actuator-Cont.html#aDATML200

    http://www.ductstore.co.uk/acatalog/Actuators.html


  • #55
    Tom Hagen
    Banned (with Prison Access) Posts: 86 ✭✭Tom Hagen


    MicktheMan wrote: »
    We extract to the outside, so hole in wall. We have a non-return butterfly valve in the extractor duct to help prevent back draught.
    Note, this does not guarantee grease-free mvhr ducting, although not too bad after nearly a decade.
    If going hole in wall, be sure to crack open a window when using the hood due to airtightness.



    would this do the trick? it seems a bit stronger than the plastic back-draft flaps.


  • #56
    Tom Hagen
    Banned (with Prison Access) Posts: 86 ✭✭Tom Hagen


    even this vent looks ok too


  • #57
    gctest50
    Registered Users, Registered Users 2 Posts: 9,605 ✭✭✭gctest50


    Tom Hagen wrote: »
    would this do the trick? it seems a bit stronger than the plastic back-draft flaps.

    If there is slightly positive pressure in the house they'll "leak" loads, since the air will be going the same direction as they were designed for


  • #58
    Paul Kiernan
    Registered Users, Registered Users 2 Posts: 2,189 ✭✭✭Paul Kiernan


    In these days of airtight houses it must be possible to get standard extractor fans that are airtight when they're turned off?


  • #59
    Tom Hagen
    Banned (with Prison Access) Posts: 86 ✭✭Tom Hagen


    Paul Kiernan wrote: »
    In these days of airtight houses it must be possible to get standard extractor fans that are airtight when they're turned off?


    doesn't look like it :confused:


  • #60
    just do it
    Registered Users, Registered Users 2 Posts: 5,422 ✭✭✭just do it


    Nilan has a product. Still need to research it so can't comment further on it.


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  • #61
    Tom Hagen
    Banned (with Prison Access) Posts: 86 ✭✭Tom Hagen


    just do it wrote: »
    Nilan has a product. Still need to research it so can't comment further on it.


    if you can find out let us know


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