Dear Jim: The repairman says I need a new gas furnace. He recommends a super-efficient one because my chimney also needs repairs. What are my options for the best comfort, and why is the chimney a ...

Question: The repairman says I need a new gas furnace. He recommends a super-efficient one because my chimney also needs repairs. What are my options for the best comfort and why is the chimney a ...

Dear Jim: I am researching 2009 superefficient gas furnaces, which I hear can cut my gas bills in half. I am confused by the terms such as "stages," "variable blower speeds," "condensing," etc. Please ...

Newly-manufactured indoor residential gas furnaces will have to be at least 95% efficient starting in late 2028 under a new rule issued by the U.S. Department of Energy (DOE). In an effort to save ...