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Strong suction robot vacuums are rated by Pascal (Pa) — the higher the number, the more pulling power. Budget models offer 1,500–2,000 Pa. Mid-range units sit at 2,500–4,000 Pa. Top-tier models now reach 8,000–10,000 Pa. More suction matters most on carpet, in corners and when dealing with fine debris like flour or sand. Strong suction also improves hair pickup on hard floors. Battery drain increases with power, so check runtime as well as Pa rating before buying.
