Frequently Asked Questions
What is carpet detection in a robot vacuum?
Carpet detection is the robot’s ability to tell the difference between a soft, thick carpet and a smooth, hard floor, and automatically adjust suction or brush speed.
How does carpet detection work?
Most robots use either a physical sensor that touches the floor or an optical sensor that shines a light and measures how it reflects, then automatically boosts suction on carpet.
Why does carpet detection matter for my home?
It saves you from manually changing settings as the robot moves from hard floors to rugs, ensuring carpets get stronger suction for better cleaning and the battery lasts longer on hard floors.
How does carpet detection differ from older carpet boost features?
Older carpet boost just cranks up power periodically assuming carpet, while newer robots use bump or optical sensors for more accurate detection without wasting battery.
Do I really need carpet detection?
If you have even one medium-pile rug or a mix of floors, it’s useful. For a small apartment with only a tiny bath mat, you can skip it.
The bottom line
Carpet detection is a ’nice to have’ that becomes a ‘must have’ the moment your robot tries to clean a shag rug. It’s not magic — just a smart little sensor that lets your vac adjust automatically. If you have mixed floors and want a clean rug without lifting a finger (or changing settings), look for a robot with real carpet detection like the Roborock S7 or Roomba j7+. For all-carpet homes, you can save your money. Simple as that.