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I want to replace the old furnace in my house, I have two options: Fedders 95% Variable speed 2-stage or Tampstar 95% Multispeed Single-stage. Which is the best?.

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The 2-stage unit will give you better variable efficiency under differing temperature conditions than a single-stage would. If I had to choose I would pick the Fedders unit, between the 2 you listed. (I install HVAC components for a living...)

Posted on Nov 11, 2010

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Two stage hot air furnaces can save you money and make your high efficiency furnace even better. With your furnace running at low fire instead of cranking up to the highest heating output in mild weather you can be more comfortable while saving money.

Many people think that they are getting the best they can get by buying a high efficiency single stage furnace. What they often don’t realize is that they could do better yet and for a few dollars more have a high efficiency 2 stage furnace that could keep them much more comfortable.


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