Furnace sizing question

rvmeush

My 18 year old furnace is a Trane XE60 Model TUP100B948A0, and seems to be a 100,000 BTU/hr furnace.

I am looking at replacing it with a Carrier Infinity 59TN6A which is supposed to be 96% efficiency.

My question is - should I get a Carrier rated at 100,000 BTU or should I get something smaller?

hvactech126

have a load calculation done on your home! You will most likely need smaller. A CORRECTLY sized furnace will not only cost you less in fuel bills, but it will make your home more comfortable.

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Missouri Bound

Do you happen to know the efficiency of your current furnace? Obviously a furnace with 100,000btuh rating and a 80% efficiency is equivalent to a 80,000bthu furnace at 100% (if there was such a thing)
Did your old furnace keep you comfortable? Only you can deciide that. A load calculation is a tool to help with the sizing of new furnaces. It's the best tool available for new construction where there hasn't been a furnace in place as a reference, for both the homeowner and the HVAC company. The best thing you could do is get at least three contractors to evaluate what you have and what you need. Let them each make the calculations rather than you tell them what you need; they are the experts. Unless you plan on installing it yourself more quotes will be a better indication as to where you want to be on both sizing and price.

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bobelectric

I like your approch,Missouri!