What size BTU output furnace do I need in Tucson. Home is 2842 sq ft single story. Built in 2001. I have 2 furnaces currently at 60K btu output and two 3 Ton AC condenser units. Installer wants to replace old with 2 new American Std 48000 btu output 36 inch high furnaces. He claims this is sufficient. What do you think?
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What size BTU output furnace do I need in Tucson.