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Thread: SEER Question

  1. #1
    Join Date
    Jan 2005
    Bakersfield, CA
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    What is it that makes one unit a 12 SEER and another a 16 SEER? What is it that makes the difference?


  2. #2
    Join Date
    Nov 2000
    Eastern PA
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    The amount of energy it takes to produce the same amount of cooling. The higher SEER rating a system has, the less it costs to operate., and ye shall find;..
    So always seek the Truth, not just what you want to believe to be true…
    Ecclesiastes 10:2 NIV

  3. #3
    Join Date
    May 2000
    Indianapolis, IN, USA
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    Indoor coil size
    Outdoor coil size
    Coil enhancements
    Non-bleed TXV vs bleed type or piston
    Compressor usage
    VS blower

  4. #4
    Join Date
    Apr 2004
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    Yep, all of that, Its really just a matter of Watts and how many it takes to produce the Btuh's. The lower the better. The items the Bald one pointed out are means to lower the watts required. For instance on an outdoor coil, a much larger coil will use less fan to reject the same amount of heat. The smaller fan motor uses less watts.

  5. #5
    Join Date
    Jun 2005
    SW Wisconsin
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    Matched Equipment: condenser, evaporator and the refrigerant control (demand a TXV) "are both SEER and EER rated." The SEER rating is meaningless if the matched system can not meet its EER rating due to ductwork problems or half a dozen other screwups!

    Its operating EER is the easiest to test check and document. The operating performance of every installtion should be checked and recorded.

    For example: due to ductwork or something else, you might have matched 13.5 rated EER/14-SEER equipment that is only performing at 9 EER. In that case it will be lucky to operate at 10 SEER.

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