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  1. #1
    Join Date
    Jan 2009
    Location
    Ypsi. Mi.
    Posts
    198

    lennox pulse furnace

    Anyone ever replace the 3/4 hp blower in the g/14q.Lennox say`s I have to buy there's it`s heavy duty and any other 3/4 hp motor will fail fast.Well the motor they sell is close to 350.00 and they don`t have one here close.It`s fricking cold out here in Ann Arbor.My normal supply house has a 3/4 hp motor and cap for under 200.00 that will fit lennox mounting bracket.

  2. #2
    Join Date
    Jul 2010
    Location
    nebraska
    Posts
    1,629
    Pressure tested the heat exchanger yet? No sense sticking a motor in if the heat exchanger fails inspection.

  3. #3
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,725
    yes it's expensive, others will fail.
    remove your pricing and pressure test the hx.

  4. #4
    Join Date
    Jan 2009
    Location
    Ypsi. Mi.
    Posts
    198
    Quote Originally Posted by t527ed View Post
    yes it's expensive, others will fail.
    remove your pricing and pressure test the hx.
    i got a ao smith motor it has no white wire or neutral wire.So what wire do I use for common.

  5. #5
    Join Date
    May 2011
    Location
    Ripley, WV
    Posts
    1,156
    The wire designations should be listed on the tag on the motor body. What is the motor part number?

  6. #6
    Join Date
    Apr 2012
    Posts
    30
    Yellow is usually common if no white.

  7. #7
    Join Date
    Nov 2001
    Location
    east kansas
    Posts
    8,027
    Replacement motor will probably fail soon. I'd do OEM only.

    BTW, did the furnace pass the pressure test?
    Beware of advice given by some guy on the Internet.

  8. #8
    Join Date
    Jan 2013
    Location
    The Cheese State
    Posts
    92
    Id replace the whole furnace parts becoming mor and more obsolete be much better in Long run to replace. Great rebates to replace!

    Sent from my HTC Hero S using Tapatalk 2

  9. #9
    Join Date
    Oct 2005
    Location
    Pacific Northwest
    Posts
    2,266
    Quote Originally Posted by JAYLUPARK View Post
    Yellow is usually common if no white.
    Um that's probably incorrect. I Hate to see a smoked motor.

  10. #10
    Join Date
    Sep 2003
    Posts
    1,675
    AO Smith has some Blower Motors that have a yellow wire as common

    Also they sometimes use purple and of course white

  11. #11
    Join Date
    Dec 2007
    Posts
    4,685
    I have seen the statement "... yellow/white for common..."
    But as stated, there should be a reference on the motor itself!!

  12. #12
    Join Date
    Oct 2011
    Location
    Toronto
    Posts
    35
    Agree with changing the furnace, once you have to change out a spark plug youll be wishing you had

  13. #13
    Join Date
    Nov 2008
    Location
    Bristol Va.
    Posts
    450
    Quote Originally Posted by GastecD View Post
    Agree with changing the furnace, once you have to change out a spark plug youll be wishing you had
    I can change out the flame sensor and spark plug in less than 5 minutes. that is being at the furnace it has cooled down & the little panel already off. There are easy ways to do a lot of jobs you just have to think outside of the box.

    dogboy

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