Trane XR90 VS XB90

DennisDe

I am trying to decided which of the two 90+ furnance would be best for me. Both are 60BTU, however the XR90 is Direct Vent - 100% ouside Air Option and the other is not. I live in ATL Ga and the installation would be a basement install where cooling is not a problem . The XB90 is non- direct vent

Pat Clark

TRANE choice

The XR90 is a 2 stage furnace so will have better efficiency and comfort level. For a few more dollars you can go to the XV90 which is the 2 stage variable speed model. Super quiet, extremely low electrical usage for less operating cost. Can save you as much as 400+ dollars per year depending on fan operation (continuous for better comfort) and electrical costs. We install 90% of our furnaces are the XV models.

Ask your contractor for details.

Pat

Dale

Direct vent

I agree with the other post on the variable speed blower, very elect. effecient. The parts cost alot to replace so at least a 5 year warranty is in order with the V version, IMHO. As to your question the inside air option is only a good idea if the basement is very clean, no chemicals used, away from the laundry and at least 25 X 25 for furnace air supply ( this is a conservative number assuming a low air change, table A 8.3.2.2 from nfpa 54. What you gain using clean basement air is no chance of a block in the inlet pipe and only one pipe through the wall. Since these furnaces condense any junk in the basement air causes severe corrosion. You must have a pretty big house in Atlanta to need 60K input, I assume you had a heat loss done.

John Starcher_4

Go with sealed combustion....

...and dedicated combustion air inlet piped to the outside.

Solves and/or prevnts a TON of combustion-related problems.

Anymore, I just about refuse to install anything that doesn't have direct-piped combustion air inlets. I wish that dryer manufacturers would start doing this!!

Starch

Jeff Lawrence_24

In Atlanta

You may still need some dehumidification, even in a basement.

I'd go with the direct vent with the outside air intake (sealed combustion).

Jeff (In Atlanta too!)

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