Why can’t I use my existing wood chimney?

Kcd660 Posted By Kcd660, Aug 1, 2019 at 12:52 PM

  1. Kcd660

    Kcd660
    New Member 2.
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    Feb 14, 2019
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    Loc:
    Missouri
    I have a sled standing wood stove right now that I don’t care for and thinking about changing to a pellet stove. Can somebody please tell me why I can’t use my existing wood stove chimney pipe with a pellet stove. Duravent makes an adapter to go from a 3inch to 6 or 8” so the piping can be done. The existing is a class A double wall pipe that is 8”. I think the company selling me the stove just wants the money but maybe I am missing something. Any help is very much appreciated!!
     
  2. blades

    blades
    Minister of Fire 2.
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    Nov 23, 2008
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    You can do it but you will have to keep a close eye for creosote & ash build up due to the exhaust gas flow rate slowing way way down allowing the gases to cool and condense even through it is a forced exhaust. Then there is your local codes to consider as well. All the company is doing is protecting there backside.
     
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  3. johneh

    johneh
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    Dec 19, 2009
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    My Pellet stove is attached to a 6 in. class A chimney. It has been for 17 years
    never had any creosote and very little ash . swept once a year just like the pellet pipe
    Go to go . Just make sure the pipe is clean when you install the pellet stove
    Note I do not think the pipe would get hot enough to ignite any creosote
    why because I can hold my hand on the double wall pellet pipe even in the coldest weather.
    with the stove running flat out .
     
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  4. Overfireinthehole

    Overfireinthehole
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    May 5, 2017
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    Harman even makes a top vent adapter where you hook 6” directly to the stove. I’ve seen chimney fires from pellet stoves, but never on 6”.
     
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  5. Overfireinthehole

    Overfireinthehole
    Feeling the Heat 2.
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    May 5, 2017
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    It is easier to sweep with 4” top to bottom...
     
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  6. Kcd660

    Kcd660
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    Feb 14, 2019
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    Loc:
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  7. Ssyko

    Ssyko
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    Nov 6, 2017
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    same here!
     
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  8. Talegas

    Talegas
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    Oct 26, 2016
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    Loc:
    Metrowest MA
    yeah, me too. Following my stove's manual, i had to increase to 4" stove pipe from the get-go then an adapter from 4" to 8" (or 6, i dont even remember now) and haven't had any issues. I do have ash going to the big pipe, but easily cleaned and in small quantities.
     
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