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That is a 2-ton unit built between 1974 and 1981 and is between 6.2 and 7.2 SEER in efficiency. Lowest SEER allowed in the U.S. is currently 13. In theory a new base unit would be around 100% more efficient to run.

1974 = 7.2 SEER

1975 - 1979 = 6.6 SEER

1980 - 1981 = 6.2 SEER

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13y ago

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