Shopping for a gas furnace? Read about types, features, and other must-know topics in our gas furnace buying guide to make an ...

Shopping for a furnace? Let us help you narrow the field with an overview of the best furnace brands for energy efficiency.

Q: With gas prices so high now, I think I should replace my old furnace even though it still works. I want the most efficient design to save money and reduce pollution. What models should I consider?

'These standards, which take effect late 2028, require non-weatherized gas furnaces and those used in mobile homes to achieve an annual fuel utilization efficiency of 95 percent'. Image by Marvin ...

Advocates say stricter efficiency rules can be met with proven, energy-saving technologies. The gas industry says the rules ...

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 ...

CNET contributor Don Reisinger is a technology columnist who has covered everything from HDTVs to computers to Flowbee Haircut Systems. Besides his work with CNET, Don's work has been featured in a ...

Natural gas furnaces are the most economical home heating devices — cheaper to operate than electric furnaces or baseboard heaters, heat pumps, geothermal or biomass. But energy use still can vary.

The Energy Department issued its final efficiency rules for residential furnaces on Friday, which it projects will save Americans over $1.5 billion in heating expenses per year. The updated standards ...