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Thread: Old SEER rating

  1. #1
    Join Date
    Mar 2005
    Location
    Wisconsin
    Posts
    1
    I have a 1989 Lennox HS19. Is there any way of determining the SEER?
    jim

  2. #2
    Join Date
    Apr 2004
    Posts
    7,680
    Not unless you have the complet model number and the indoor equipment model numbers and then one of the gurus in here might help.

    Odds are its around 9

  3. #3
    Join Date
    Jun 2005
    Location
    SW Wisconsin
    Posts
    4,989
    The unit is not apt to be operating at its rated SEER and Btu/hr level, therefore, the SEER is rather irrelvant.

    When a typical HVAC contractor quotes the efficiency of the Air Conditioning equipment SEER & Btu/hr and leads you to believe the new equipment will automatically deliver that efficiency & Btu/hr, think again.

    Typically, installed equipment only operates at 55% to 70% of rated capacity.

    It’s important to understand that "equipment ratings are only the potential efficiency of that component of the system under perfect conditions." Over half of the system’s efficiency depends on the duct system and the field-installation.

    http://www.udarrell.com/aircondition...e-airflow.html

  4. #4
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,743
    10 - 11.5 depending on unit and coil match. need model #s for exact rating.

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