The Xiaomi S40 Pro's 4000Pa suction doubles down on carpet cleaning

The suction gap between the Xiaomi S40 Pro and the H40 isn’t subtle — 4000Pa versus 2500Pa is a real difference you’ll feel on carpets. The S40 Pro pulls embedded dirt and pet hair out of medium-pile carpets in a way the H40 just can’t match. If your home is mostly hard floors, the H40’s suction is plenty adequate; if you have area rugs or carpeted rooms, the S40 Pro is the one that actually deep-cleans them.