“Winters are cold in Sylvania, Ohio — too cold to be without a furnace. That’s what was going through our minds as we thought about our 20-year-old furnace and the winter ahead,” said homeowner Wendy ...

The XC95m fully communicating modulating furnace modulates its heat output based on indoor conditions. As the difference between set and indoor temperatures increases, the furnace increases its heat ...

Q. I made energy improvements to my house, but my 25-year-old gas furnace does not keep it as comfortable as before. Also, I think my gas bills should be lower? Which 2008 furnace models are most ...