I heard from a carrier salesman that the infinity furnace is a 3-5 ton blower drive in the 80K BTU model. My trane rep says thats only in an upflow and not in the downflow. My questions are...
Is the 80K BTU up really 5 ton blower drive?
Can the 80K down do a 4 ton blower drive?
I remember that the downflow carrier used to be 94.1% is this still true?