If you need to purchase a gas-burning forced-air furnace but aren't sure how they work, here's what you need to know.

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 ...

Discover the key differences between heat pumps and furnaces, including energy efficiency, cost, and climate suitability.

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 ...