A vacuum cleaner is a straightforward device: you turn it on, it collects dust and dirt, and then you turn it off. However, after testing numerous top vacuum cleaners, I've discovered a feature that can significantly enhance the cleaning experience—one that many users may not even know exists.
This feature is the air intake adjustor located on the floorhead. Typically, it appears as a small manual slider that allows you to modify the amount of air entering the suction area beneath the vacuum.
For optimal performance, vacuums need to create a 'vacuum' under the floorhead. The head must maintain contact with the floor around its entire perimeter to maximize cleaning efficiency. If it’s not sealed properly, the motor wastes energy by drawing in air from outside instead of focusing on removing dirt from the floor.
However, if the vacuum creates too strong of a suction, it can become difficult to maneuver, particularly on thick carpets where the fibers can create a tighter seal. This is where the air intake slider becomes invaluable.
The key is to find a balance that allows for comfortable maneuvering while still maintaining an effective seal for cleaning. On thick carpets, slightly opening the slider can make the vacuum easier to push. During my testing for the best cordless vacuum, I often had to adjust the slider on powerful models to facilitate movement. Conversely, on hard floors, closing the slider can enhance suction power.
The good news is that this feature is not overly complex—many vacuums already include it, even if you haven't noticed. If you find it challenging to maneuver on carpets or want to optimize your vacuum's performance on hard surfaces, check your floorhead for a slider you might have overlooked.