Xiaomi S40 Pro vs H40: S40 Pro wins for carpets, H40 is fine for hard floors

The S40 Pro’s 4000Pa suction pulls embedded dirt and pet hair out of medium-pile carpets in a way the H40’s 2500Pa just can’t match. On 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.