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  1. #1

    Condensing Gas Boiler Venting

    I am considering venting a condensing gas boiler BUDURUS GB142 into an unlined, 120 year old, brick chimney but am concerned if the acidic flue gas might damage the brick or mortar. Currently the chimney vents a 30 year old Peerless oil-fired boiler and a conventional gas DHW heater. Do I have any chance with this choice or is SS or direct vent the only options. Thank you

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,876
    Condensing appliances may not be vented to a chimney.
    You need a new contractor. One that knows what he is doing and won't kill you and your family by doing hack installs.
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    How many times must one fix something before it is fixed?

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