3i S10 Ultra Robot Vacuum and Mop with WaterRecycle System
Verdict
The 3i S10 Ultra is a convenience focused hard floor specialist with outstanding smooth floor and mopping performance plus a unique WaterRecycle system that can eliminate manual tank filling in humid climates. Its below average carpet pickup, poor obstacle avoidance, and very high energy use mean it is best for mostly hard floor homes where the water automation is worth the tradeoffs.
Pros
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Hair Pickup — Carpets ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 5.0Hair pickup on carpets is a major strength for the S10 Ultra, as it removes almost all long synthetic hair and pet like fluff in stress tests and ranks at or near the top of the group for raw hair collection.
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Hard Floor — Fine Dust Pickup ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 5.0On hard floors the S10 Ultra is exceptional, achieving nearly perfect pickup of fine debris in controlled tests and standing out as one of the best smooth floor cleaners among current robot mops.
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Solution / Liquid system ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 5.0The S10 Ultra’s WaterRecycle system is a standout, automatically reclaiming and purifying water so that in humid environments it can run many mopping cycles without any manual filling or dirty tank emptying by the owner.
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Mop lifting system ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.5The S10 Ultra’s mop lifting system is effective at keeping thicker carpets from getting wet during vacuum runs, making it easier to handle mixed flooring when combined with room sequencing in the app.
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Mopping performance ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.0Mopping performance from the S10 Ultra’s roller system is very good, delivering clean looking floors and strong dried stain removal that trails only slightly behind the very best roller based mops in direct comparisons.
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Overall opinion ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.0Overall, the S10 Ultra earns positive reviews as a convenience focused hard floor specialist, trading weaker carpet cleaning, poor obstacle avoidance, and heavy power draw for outstanding smooth floor performance and a dock that can virtually eliminate water chores.
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Price & Value ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 4.0Although the S10 Ultra has a high list price, frequent discounts and its unique water automation make it an appealing value for hard floor homes in humid climates where owners prioritize convenience over absolute efficiency.
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AI, Smart & App / Automation ★ ★ ★ ★ ★ ★ ★ ★ ★ 1 review 3.5Smart features on the S10 Ultra favor simplicity, with an easy to use app and basic voice controls that cover on off and room cleaning but lack the deeper mapping, routines, and automations offered by power user oriented rivals.
Cons
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Carpet — High-Pile Pickup ★ ★ ★ ★ ★ ★ ★ ★ 1 review 2.5The S10 Ultra performs below average on high pile carpet, removing only about half of an embedded debris mix even on long runs, so it is better suited to homes with mostly hard flooring and only limited thick rugs.
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Edge & Baseboard Cleaning (Hard Floors) ★ ★ ★ ★ ★ ★ ★ ★ 1 review 2.5Edge and baseboard mopping is a weak spot for the S10 Ultra, as its hardware can reach edges but imprecise navigation often leaves small stains or residue in inside corners and around obstacles.
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Hair‑Wrap / Tangle Resistance ★ ★ ★ ★ ★ ★ ★ 1 review 2.0Despite strong pickup, the S10 Ultra struggles with hair wrap, frequently leaving long strands tangled around the main brush after both modest and heavy hair runs, so owners should expect regular manual detangling.
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Energy efficiency (kWh) ★ ★ ★ ★ ★ ★ ★ 1 review 1.5Energy use is a major downside of the S10 Ultra, as its water capture and distillation dock draws far more power per cycle than competitors and can noticeably increase monthly electricity consumption if run nightly.
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Obstacle Avoidance (Robot) ★ ★ ★ ★ ★ ★ 1 review 1.0Obstacle avoidance is poor on the S10 Ultra, with tests showing it running over fake pet waste and getting its brush jammed, so it requires more floor prep and supervision than the best flagships.
