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 ...

Heat pumps have annually outsold gas furnaces for several years now, and with the recent introduction of more high-efficiency, cold-climate, air-source heat pumps, that trend is likely to continue.

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Liam McCabe After a decade of reporting on HVAC and other major appliances, I ...

With global warming becoming an urgent issue, heating our homes efficiently -- and sustainably -- has taken center stage. As winters become more unpredictable (and unexpectedly harsh), finding ...