Manufacturers will often boast about their vacuum's suction power in terms of air watts, a figure that quantifies airflow in terms of power use. Generally speaking, more air watts means a more powerful vacuum cleaner but the actual design of the vacuum head plays a significant role too. The tighter a vacuum is against the floor, the greater the suction. If it's too tight against the floor, larger bits of debris won't be able to make it underneath the cleaning head at all. The type of flooring you're trying to clean makes a big difference, too.That's why CNET puts each vacuum we review through

Suction matters because it's a good measure of how well a cordless vacuum cleans on different surfaces. Not surprisingly, the Eureka ReactiSense 440 was a powerful performer in our tests, particularly in our sand tests, where it removed the largest cumulative amount of sand from our hardwood, low-pile carpet and midpile carpet test floors.

Yes, cordless vacuums are worth it if you prioritize convenience and portability, and have a need for quick and easy cleaning. · They are lightweight, easy to carry, and can easily move from room to room without having to unplug and replug the vacuum.