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  1. #1

    Hmm

    I have learned a lot from the craftsmen on this site, and am close to making a decision on a new furnace. One other concern I have is whether to replace my current 13 year old hot water tank with a power vent model, such as a State or AO Smith, to allieviate any potential problems with an atmospheric venting model not venting correctly through a five inch double walled metal exhaust pipe currently being shared with my 80% furnace. I was told by one plumber, however, that the power vent tanks do not have a great recovery capability, and due to the temp of the incoming water in Upstate NY, it makes the recovery slow after a few showers, etc. Is this true? Or will I be OK with venting a new atmospheric tank in the current five exhaust pipe?

  2. #2
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,764
    5" b vent up thru house should be ok. have installer check on venting chart.

  3. #3
    Join Date
    Jun 2003
    Location
    New Hampshire
    Posts
    2,666
    The pipe sounds too small for natural draft furnace and natural draft water heater. Venting tables will tell the whole story.

  4. #4
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,773
    Power vent water heaters are availible in the same recorvy rates as natural drat water heaters.

    So your plumber is not up to date on water heaters.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  5. #5
    Join Date
    Apr 2004
    Posts
    201

    go tankless

    You should look into a wall-hung tankless on-demand water heater. Upfront expense is worth the pay-off in unlimited hot water. Do some research here http://www.pmmag.com/CDA
    ...SHEEESH!!!

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