We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Materials used to vent a portable AC unit in a casement or crank window. Last summer, ...

A window is the best option for venting a portable AC, but there are alternatives if a window is not available. Venting is critical; without it, the AC sends hot air back into the living space.

Lee Wallender is a home improvement writer of nearly 20 years and specializes in home remodeling, repair and maintenance. Cassidy was an updates editor whose main responsibility is to write and edit ...

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 ...