This simple formula can help you decide whether it's smarter to repair or replace your HVAC system.

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 ...

Having spent 30+ years in residential construction, contracting, remodeling, maintenance and home repair, Deane now contributes DIY, informational and financial content as a freelance writer and ...

Regular maintenance is more important than you think. Use it to your advantage and save on HVAC costs in the long run. Alexandra Jones is a CNET contributor who writes about food, farming, gardening, ...