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  1. #1

    need help

    Does anyone know how to find the size of an old whirlpool unit model #NCAB029AB02?

  2. #2
    Join Date
    Aug 2007
    Location
    Winter Haven, FL
    Posts
    4,379
    Look at the compressor model number.
    Its probably 2.5 ton

  3. #3
    Join Date
    Aug 2010
    Location
    Greenwood, IN
    Posts
    34
    Generally sizes can be determined through the model number. Somewhere in the middle or at the end two digits represent unit size. With your model number I would interpret it to indicate about a 2.5 ton unit.

  4. #4
    Join Date
    May 2001
    Location
    Bennington, Vermont U.S.A.
    Posts
    13,864
    Here is a trick I learned.

    If you have no idea what size a unit is get the RLA off of the compressor.

    Then go to some new product data sheets and compare the RLA of a new unit.

    For example. You have a unknown compressor with a RLA of 15.5 A. Go to Carrier, Trane, Lennox etc. new product data sheets.

    Under electrical it will give you the RLA for the compressors of different size units. For example a 3 ton system has a compressor of 16.6 RLA. And a Two ton system has a RLA of 14.9 RLA. Then it is a pretty good chance to think that you have a 2.5 ton system.

  5. #5
    Join Date
    Aug 2007
    Location
    Winter Haven, FL
    Posts
    4,379
    If you get the rla..you can probably get the model # too.

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