Why do window ACs actually need a window? On the surface, it feels unnecessary — after all, the unit is clearly designed to blow cold air from the front. Why can't you just set it on the floor like a ...

Compact heat pumps that slot into windows could be a planet-friendly way to efficiently heat and cool apartment buildings without breaking the bank, experts say. While many single-family residences ...

We've spent the last several months testing window air conditioners and portable air conditioners and found that while window units cooled rooms faster, it wasn't that much faster. It's true that ...