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Community and Q&A

Make up air inlet for a wood fireplace

arnoldk | Posted in General Questions on
Hi,

I am in the process of designing a two story house, slab on grade with a finish living space of just over 2000 sq ft in Ottawa, Canada (zone 6). We are building a pretty good house with a minimum 1ACH but will be aiming around 0.5 ACH.

We will be installing a small wood stove and I plan on roughing in a pipe to the outside in case we need to install an outside air kit (OAK). Some pretty good house have managed to not require one while other did so I rather play it safe and rough one in and simply insulate and seal it during construction.

My understanding is an OAK needs to be install below the stove itself to avoid possible backdraft. Because of this I suspect the inlet will be relitivaly close to the ground (2 feet maybe).

Given my area gets a lot of snow, what do people do to avoid snow from accumilating around the pipe aside from shovelling?

Thank you,
Arnold

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Replies

  1. Expert Member
    Michael Maines | | #1

    Arnold, you could probably devise a shroud of some sort. But unless it's densely packed, snow allows air to move through it, so at 2' above grade you should be ok. When the snow is deep or dense, you'll have to shovel. It's just one of the tradeoffs to burning wood in a tight home. Another you'll find is that you have to crack a window or door when starting a fire.

    You didn't ask but a tip from architect Steve Baczek is to install a valve as part of your makeup air kit, so you can close it when the stove is not in use.

  2. arnoldk | | #2

    Hi Michael,

    Thanks for the response. My current semi detach house in the suburbs seems to have very little acclimating 6-12 inches from the foundation but that could because of the fence 25 feet away.
    As for the outdoor air kit, I was planning on installing something similar to this product sold by Century Heating.

    I am aware that wood stove are not popular and it even seems to be frown upon with air tight home which I understand why. My reasoning is because I will be living in a more rural area (power outage confirmed by neighbours) and I also have 23 aces fully treed, it just makes sense to have as a backup/supplementary heating source.

    Thanks,
    Arnold

    1. Expert Member
      Michael Maines | | #3

      I had not seen that damper, thanks for sharing.

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