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  1. #1
    Join Date
    Dec 2016
    Posts
    2
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    New Rheem furnace blower is loud

    We just installed a Rheem 96P100 100,000 btu, and the furnace blower is real loud. Much louder than the unit it replaced ( an Armstrong RX90 100,000 btu installed1999) The home is a 2500 sq ft ranch. The bulk of the noise is at the intake vents. The contractor did come out and turn the burner down and blower down as much as they could, now they want estimate to do some duct work going into the blower, increase the size from 16x25x1. Estimate 600 bucks. Will this solve the noisy vent problem or is there anything else they can do?

  2. #2
    Join Date
    Feb 2011
    Location
    Georgia
    Posts
    452
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    I would venture to say the new unit is a variable speed blower and the old was a standard psc blower. Tell them to add one large return duct to a central open area of the house and definitely increase the filter size from 16x25. Do not let them increase the filter size only. You will both be disappointed.

  3. #3
    Join Date
    Jun 2003
    Location
    Texas
    Posts
    1,216
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    Also have them line the blower compartment with duct liner

  4. #4
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    37,933
    Post Likes
    96P is a PSC but today's 96% furnaces want to move a lot more air than the 90% of the old days. Sounds like it is oversized or under ducted. 16x25x1 filter way too small for that furnace too. 20x25x5 media air cleaner with side & bottom return would be best or 2 medias and 2 side returns...

  5. #5
    Join Date
    Apr 2011
    Location
    Ocean Springs, MS
    Posts
    39
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    If at all possible have your intake chamber lined with ductboard. I would definitely have him check the static pressure of the system....this will tell you whats really going on with the ductwork. These new variable speed or x-13 motors will maintain a certain cfm....if ductwork is undersized that motor will ramp up in an effort to maintain the cfm's it was designed for. More than likely your ductwork is undersized along with your return. Hope this helps

  6. #6
    Join Date
    Sep 2007
    Location
    edmonds wa
    Posts
    3,344
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    Of course they did do a heat loss , thats a lot of heat.
    UA Local 32

  7. Likes HeatenCoolair liked this post

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