Compact heat pumps that slot into windows could be a planet-friendly way to efficiently heat and cool apartment buildings ...

My home is prone to condensation on the inside of my single-pane windows, which also encourages mold. But condensation can also be a concern when it occurs between double- or triple-glazed panes.

Window replacement companies love to throw around big numbers - "save up to 40% on heating costs!" or "cut your energy bills in half!" These claims sound great, but they're usually based on replacing ...

This article is brought to you by our exclusive subscriber partnership with our sister title USA Today, and has been written by our American colleagues. It does not necessarily reflect the view of The ...