By Mary H.J. Farrell Size matters when you’re buying a window air conditioner. An air conditioner that’s too small will ...

Since it is designed for on-the-go cooling in small spaces ... What to look for in a portable air conditioner Btu and room size: One British thermal unit (Btu) equals the heat needed to raise ...

for large rooms or for small to medium-size rooms, we have a pick for you. Now, let's talk testing. The process of testing window air conditioners is identical to how we tested portable AC units.

The best portable air conditioners keeps things cool, calm and non-sticky throughout the year. No one wants to sit at home uncomfortable and slick with sweat, and that's where a portable AC unit ...