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Thread: 14 SEER?

  1. #1
    Join Date
    Aug 2006
    Posts
    10
    I have a new RUUD AC system that s suppose to be 14 SEER.
    The RUUD/RHEEM spec sheets show it to be 13 nominal, and it can only reach 14 if a certain coil and furnace blower are used.

    Here is my stuff:
    condensing unit: RUUD/RHEEM model no: UAND042JAZ
    evap unit: RHEEM model# RCFAHM4821AC
    furnace blower: GOODMAN model#GMP100-4 (rev 13)

    Can it all reach 14 SEER?

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,586
    Nice unit but like most, it will only reach 14 SEER with select variable speed indoor units. With standard blower, 13 SEER.

  3. #3
    Join Date
    Aug 2006
    Posts
    10
    Thank you very much for the reply.

  4. #4
    Join Date
    Aug 2006
    Posts
    10
    This setup was sold to me as a 14 SEER. It is a 3.5 ton condensing unit and a 4 ton evap and blower. My house is still gets to 80+ when it's really hot. I was told I could be upgraded to a RUUD 4 ton "heavy", which pull more moisture from the air than a standard RUUD 4 ton.

    What is a 4 ton heavy? Anyone heard of it?

  5. #5
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Originally posted by kjh
    This setup was sold to me as a 14 SEER. It is a 3.5 ton condensing unit and a 4 ton evap and blower. My house is still gets to 80+ when it's really hot. I was told I could be upgraded to a RUUD 4 ton "heavy", which pull more moisture from the air than a standard RUUD 4 ton.

    What is a 4 ton heavy? Anyone heard of it?

    Never heard of "heavy".


    Increasing the size of the system ,isn't really an "upgrade" and likely is not needed.If you have them do it be sure they increase the duct system sizes ,as needed to handle the extra air flow.


    Before increasing the size;

    1.Confirm that the system is producing it's rated btus.

    2.Confirm that duct air leakage is not the problem.

    3.Confirm that undersized ducts are not the problem.

    4.Look at ways to reduce the capacity needed to cool the home. Add insulation to the attic and crawl space,tint east and west facing glass,etc.,etc..


    Always have a Manual J load calculation done ,to confirm equipment size needed before increasing the size.

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