Furnaces with variable-speed blower motors are becoming more popular - no question about it. The benefits include electrical efficiency because a variable-speed motor consumes less energy than a ...

Most furnaces in our home are standardized and designed to run in one particular way with little room for customization beyond temperature control. While this creates greater ease of maintenance and ...

Q: My 25-year-old gas furnace does not keep my house comfortable anymore. Also, I think my gas bills should be lower. Which 2008 furnace models are most efficient? -- Mike J. A: The highest efficiency ...