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Robot Autonomy, Classified
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ComparisonMaytronics Dolphin Nautilus Titan and Pentair Warrior SE

Up to three

All robot pool cleaners. Every figure below is placed against the whole class, so a gap can be read against how much the class itself varies.

Where each one suits you.

The conditions each robot was assessed against, side by side. Rows marked in gold are where these machines genuinely differ.

Fit verdicts by condition for each robot
Condition Dolphin Nautilus Titan Pentair Warrior SE
Pool type
In-ground GoodMaytronics classifies it for in-ground pools in rectangular, round, free-form and kidney shapes. GoodDesigned for in-ground pools; gunite, vinyl, and plaster pools all supported.
Above-ground PoorMaytronics lists in-ground pools only, so above-ground pools fall outside its classification. PoorCord management and size make this model impractical for above-ground pool installations.
Mixed setupthey differ PoorA setup that includes an above-ground pool is outside Maytronics' in-ground classification. GoodStandard for this category, see specs for confirmation.
Pool size
Small (< 400 sqft) GoodRated for pools up to 50 ft long, well beyond a small pool's length. GoodCapable but exceeds what compact pools typically need; corded run time wastes energy on sub-5k gallon pools.
Medium (400 – 800) GoodMaytronics' 50 ft length rating comfortably covers typical mid-size in-ground pools. Good15k to 30k gallons is the ideal operating range; floor coverage completes within typical 1.5-2.5 hour cycles.
Large (> 800) DependsRated to 50 ft long; pools beyond that exceed Maytronics' stated range, and no large-pool test was found. DependsMultiple cycles required per week on pools over 30k gallons; random pattern is inefficient at scale.
Debris load
Fine (sand / silt)they differ DependsAn ultra-fine filter kit is included, but no independent test of fine debris pickup was found. GoodCartridge filter handles fine sediment and silt effectively.
Leaves / large debris DependsNo independent test of heavy leaf loads was found, and there is no full-filter warning. DependsHeavy leaf load requires pre-skimming and frequent basket emptying; random search prolongs debris collection.
Algae / heavy fouling DependsTwo active brushes scrub surfaces, but no independent algae test was found. DependsBrush contact helps prevent algae growth; vacuuming already-formed algae is less effective than proactive brushing.
Coverage you want
Floor only GoodMaytronics lists floor cleaning as part of its default 2-hour cleaning cycle. GoodDual brushes provide thorough floor contact; documented owner patterns show effective bottom-sediment removal.
Floor + wallsthey differ GoodMaytronics lists floor and wall cleaning, with brushes that scrub vertical surfaces. DependsLower walls contacted by brushes; upper walls and waterline require a separate tool or multi-zone strategy.
Floor + walls + waterlinethey differ DependsMaytronics claims waterline scrubbing, but no independent waterline test was found. PoorWaterline cleaning is not a design feature; this model cannot reach most pool coping or perimeter tile.

A robot being poor for a condition is a fact about fit, not a fault. “Depends” means the record names a limit worth reading, not that the answer is unknown.

Keep going.

The full recordMaytronics Dolphin Nautilus TitanSpecifications, evidence, the Fit Check in full, and every tracked change.The full recordPentair Warrior SESpecifications, evidence, the Fit Check in full, and every tracked change.

Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.