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  1. #1
    Join Date
    Sep 2009
    Posts
    1
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    Cool Seer Compatibility

    Are there any respected association or manufacturer reports that require entire system replacement on 10- vs. 13+ SEER components?

  2. #2
    Join Date
    Jan 2004
    Location
    PA
    Posts
    70,448
    Post Likes
    All manufacturers, recommend complete matching indoor and outdoor units.

    Some void warranty if you don't.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

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