Venting rules change with efficiency — and mixing them up can lead to moisture buildup, heat exchanger damage, and dangerous combustion issues.

Staying comfortable in our home is something that many of us take for granted. Unfortunately, for some individuals, old or failing heating and cooling systems can make it nearly impossible to keep a ...

Lee Wallender is a home improvement writer of nearly 20 years and specializes in home remodeling, repair and maintenance. Cassidy was an updates editor whose main responsibility is to write and edit ...

Mike De Socio is a CNET contributor who writes about energy, personal finance, electric vehicles and climate change. He's also the author of the nonfiction book, "Morally Straight: How the Fight for ...

In the early days of the Internet, it was possible to find a smattering of people selling HVAC equipment online. It seemed like a small sampling and one that could be considered merely a blip on the ...