What does suction power in pascals (Pa) tell you about a robot vacuum?

Suction power in pascals (Pa) tells you how strong a robot vacuum really is — higher numbers mean stronger pickup. Entry-level robots sit around 2,000-2,500 Pa, while premium models push 5,000-6,000 Pa. Raw suction matters most on carpets; on hard floors, even 2,000 Pa is plenty.