The heat-exchanger on my current furnace is cracked and I
need to replace it. I am considering this furnace. The
salesman from the local natural gas utility company carries
Ruud, however does not carry the Modulating furnace and
recommends the Two-stage instead. We live in Minnesota and
have had two heat-calcs done on our home both of which
recommended a 100,000 btu furnace. Any thoughts on how
these two furnaces compare?