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DLovelace
Apr 11, 2009, 05:26 AM
What is the most efficient a/c unit

Stratmando
Apr 11, 2009, 06:31 AM
They claim to be:
Lennox Debuts World's Quietest, Most Efficient Air Conditioner (http://www.buildingonline.com/news/viewnews.pl?id=4044)
As Seer rating(Efficiency) goes up, so does the price.

Joshdta
Apr 11, 2009, 08:29 AM
18-20 seer are the most efficant available depending on what brand you are looking at. But as stated above also very pricey. What state are you in? And are you looking at ac only or a heatpump?