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.

Humming air conditioners are the soundtrack to summer in the U.S., given that almost 90% of households use them for cooling. Even though air conditioning is everywhere, however, many people still have ...

Portable ACs have specific quirks to consider. Here's what I learned about buying and installing a mobile air conditioner. John Carlsen has more than a decade of experience testing and reviewing home ...