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  1. #1
    Join Date
    Feb 2004
    Location
    Wellington
    Posts
    153

    Default Kitchen rangehood and building code

    Is it necessary to have a rangehood over a stove or as an alternative an exhaust fan as part of the building code in NZ? If so, is it required to be vented or not?

    could you direct me to the appropriate url where I can find the code that applies if so

    Thanks

  2. #2
    Join Date
    Sep 2008
    Posts
    7,529

    Default

    this only answers half your Q

    a quick google SEEMS to show that a rangehood isn't required........ but all fans, if fitted, MUST be externally vented

    Mechanical extract ventilation shall exhaust to the exterior (this includes extract ventilation from the rangehood, clothes drier, bathroom and toilet).


    http://www.dbh.govt.nz/userfiles/fil...ent-part-2.pdf

    9.5.3 Mechanical extract ventilation, where
    installed
    , shall exhaust to the exterior (this includes extract ventilation from the rangehood, clothes drier, bathroom and toilet).


    http://www.dbh.govt.nz/userfiles/fil...e-solution.pdf
    Last edited by eri; 08-10-2010 at 10:06 PM.
    have you defeated them?
    your demons

  3. #3
    Join Date
    Feb 2004
    Location
    Wellington
    Posts
    153

    Default

    awesome thanks for link.

    9.5.3 doesn't seem to specifically require a rangehood in a kitchen? Only talks of need of ventilation in toilet, bathroom or laundry unless i'm missing something?

    Granted when there is a rangehood it must be vented.

  4. #4
    Join Date
    Oct 2005
    Location
    Queenstown, Dunedin
    Posts
    121

    Default

    commercial it has to be vented, residential it doesn't

  5. #5
    Join Date
    Sep 2007
    Location
    Auckland
    Posts
    8,268

    Default

    You don't have to have a range hood. And if you do you can have a recirculating one. Mechanical engineers who know all the rules told me this the other day.

    Interestingly they also said nearly all rangehoods are useless with the amount of air actually shifted by them being very minimal.

  6. #6
    Join Date
    Sep 2003
    Location
    High up above and deep down under
    Posts
    10,915

    Default

    What did they suggest to use then, Dave?
    "There's one way to find out if a man is honest-ask him. If he says 'yes,' you know he is a crook." Groucho Marx

  7. #7
    Join Date
    Sep 2007
    Location
    Auckland
    Posts
    8,268

    Default

    Well they suggested not having them at all because in their opinion, they don't do a heck of a lot. We talked about it and the biggest benefits seem to be that people like them, they have lights over the cook top which is helpful and people feel good about removing the steam (even if they're not removing that much).

    So I will be putting one in each of my new apartments but they will be recirculated ones. This saves 3 extra holes in the roof (with possible leaks), the ducting etc.

  8. #8
    Join Date
    Mar 2007
    Location
    Christchurch
    Posts
    50

    Default

    My electrician friend has installed an inline exhaust fan (like you'd use in a bathroom) in the ducting of his rangehood. Apparently it works better than the rangehood's fan and is much quieter of course.
    And when there's a lot of steam being created he flicks on the rangehood fan as well for turbo steam-clearing action! He says it's extremely effective.

  9. #9
    Join Date
    Jun 2006
    Location
    Hutt City
    Posts
    1,305

    Default

    Note they said "nearly all rangehoods are useless..."
    If you search around and spend a bit of money you can get a decent one, but you won't find it in Bunnings or Mitre10 - Personally I think it's worthwhile to keep the cooking smells out of the rest of the house

  10. #10
    Join Date
    Sep 2008
    Posts
    7,529

    Default

    a good test is to cut a bit of paper about half size of the grill

    hold it the middle and turn the fan on

    a fan with good through flow should suck the paper against the grill so you can take your hand away and the paper remains there
    have you defeated them?
    your demons


 

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