The best portable air conditioners keep rooms cool and offer a degree of air filtration. We test for cooling ability, noise, and energy efficiency.

This high-end, portable air conditioner has a dual-hose design for efficient cooling. Pros: The dual-hose design effectively shuts out heat and allows the unit to produce cold air more efficiently.

Since it is designed for on-the-go cooling in small spaces ... to look for when shopping for portable air conditioners are how well they fit your window, energy consumption, and cooling abilities.