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2 stage furnace

Posted by Lan Ma on October 29th, 2002 02:49 PM
In reply to comparison rating for home forced air gas furnaces by B Berger on October 19th, 2000 09:34 PM [Go to top of thread]

1. How much more efficiancy for 2 stage furnace compare with 1 stage furnace? How reliable the 2 stage furnace is?
2. Which brand of furnace is better, Lennox or Amercan Standard?
Help please. Thanks.


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