Traditional air-source heat pumps can provide reliable heating when outdoor temperatures are moderately cold. However, once the weather reaches subzero temperatures, heat pumps suffer a drastic loss ...

For the last few years, much of the focus on cold climate heat pump (CCHP) technology has centered on air-source ducted systems, which are designed to deliver efficient, comfortable heating, even in ...

In freezing temperatures, the batteries of electric vehicles can be less efficient and have shorter range, a lesson many Tesla drivers in Chicago learned this week. By Emily Schmall and Jenny Gross ...