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Posted by Lp1331 1p1331 on July 12, 2009, 10:47 pm
Tony, we don't sell Lennox, but do service a few. Just guessing, but I
would imagine that the "13" in the model numbers means 13 SEER, and the
"42" in the first unit means 42000 BTU or 3 1/2 ton, and the "37" is
37000, or a strong 3 ton. That would be logical-- but then you are
talking about Lennox, so who knows. Hopefully, if I am wrong. someone
will jump in with the correct info. Good luck Larry
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