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  1. #1
    Join Date
    Aug 2012
    Location
    Portland, Or
    Posts
    103

    Anyone know who makes million btu 90+ gas furnace

    Bidding a job to replace old oil system. Million btu propane up flow furnace? Don't even know where to look. My local supply house say no carry it

  2. #2
    Join Date
    Feb 2010
    Location
    Calgary, Alberta
    Posts
    1,012
    Engineered air may have something.

    They have condensing models up to 5000mBTU, but they're custom built, and expensive

  3. #3
    Join Date
    Dec 2000
    Location
    Flat Rock, NC
    Posts
    463
    Is that the input of oil furnace? I would look at replacing w/ 2 pairs of twinned 150 btu furnaces, I bet the output btu would be close enough. Has a heat loss be done to determine actual load? Ducting should probably be seperated into zones anyway.

  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    33,396
    Residential units probably don't have the blower power for commercial use. Most of them are designed for .5 static where commercial can be several times that.

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