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  1. #1
    Join Date
    Jun 2010
    Location
    Charlotte, NC
    Posts
    155

    What SEER would an 18 year old unit be?

    I am trying to do a rough calculation of how much I would save replacing 18 year old heat pumps.

    A sample would be a 3.5 ton split system heat pump. A basic new one would be 13 SEER. What would the old one from 1994 likely be? 8 SEER?

    I know how much I save would depend on how much load (and therefore how much they run) but is a 13 SEER 50% more energy efficient than an 8 SEER?

    Is there a rule of thumb on energy savings from a higher SEER?

    Thanks very much

  2. #2
    Join Date
    Mar 2007
    Location
    NW AR
    Posts
    2,478
    Post a model number and someone can identify the seer.

    8 SEER would probably be close for that year. My customers rave about how much lower their electric bills are when I change one that old out. There is a calculator I believe but I dont have it.

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,540
    94 should be 10 SEER.
    Contractor locator map

    How-to-apply-for-Professional

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

  4. #4
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,344
    Emerson has a calculator. It is advertised on this site.

  5. #5
    Join Date
    Jun 2010
    Location
    Charlotte, NC
    Posts
    155
    Thanks for all the answers. I appreciate the help.

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