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  1. #1
    Join Date
    Jul 2005
    Posts
    133
    I have a Carrier 38YR018320 installed with an air handler FK4BNF001 in 1994. Since I have no documentation on the unit, I have been searching the web and found that an 018-30 series matched with that air handler has a TDR-TXV (the outside unit label mentions a TXV) and is rated at 18,000 BTU and 11.05 SEER. However mine is a 018-32. Can anyone tell me what that last digit after the '3' implies? Thanks again.

  2. #2
    Join Date
    Feb 2004
    Location
    Kingsport, Tennessee
    Posts
    649

    Carrier Model #

    That "2" represents a slight modification made to that model by Carrier. It is still the same basic model, but is a 32 series. On cetain models there could be 33, 34, etc. Always give the complete model number when needing parts.

  3. #3
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    The models that match the air handler are ,018,024,030,that's the nominal tonnage,1.5,2.0 and 2.5 tons.

    Big is correct about the numbers that come after the tonage.

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