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A side-by-side comparison of the Dolphin Sigma and Dolphin Nautilus CC — price, filtration, cleaning coverage, brushes and warranty — to help you pick the right Dolphin robotic pool cleaner.
| Feature | Sigma | Nautilus CC |
|---|---|---|
| Price | $2999$2349 | $599 |
| Lineup | ProLine™ | Nautilus™ |
| Best for | The most advanced clean | Basic entry cleaning |
| Pool size | Up to 50 ft | Up to 33 ft |
| Cleaning coverage | Floor + Walls + Waterline | Floor + Walls |
| Scrubbing brushes | 2 (Active brushes) | 1 |
| Filtration | NanoFilters™ | Cartridge |
| Control | myDolphin™ Plus app + Gyro | CleverClean™ |
| Warranty | 3 years | 1 year |
The Dolphin Sigma is part of the ProLine™ lineup — The most advanced Dolphin ever, with a gyroscope and app control. It cleans pools up to 50 ft with floor + walls + waterline coverage and NanoFilters™ filtration, backed by a 3 years warranty.
The Dolphin Nautilus CC is part of the Nautilus™ lineup — The entry Nautilus CC with single-brush cleaning. It handles pools up to 33 ft with floor + walls coverage and Cartridge filtration, backed by a 1 year warranty.
The Dolphin Sigma is our pick. As part of the ProLine™ — one of our two top-recommended lineups — it steps ahead of the Dolphin Nautilus CC with floor + walls + waterline coverage, NanoFilters™ filtration and a 3 years warranty.
The Dolphin Nautilus CC is the cheaper option at $599, but the step up to the Dolphin Sigma buys a meaningfully better clean and longer coverage that's well worth it.
Every Dolphin Max-Series™ and ProLine™ robotic pool cleaner ships free and is backed by a full manufacturer warranty — explore our top-recommended robots and find the right fit for your pool.
Shop Max-Series™ Shop ProLine™ Shop all DolphinThe Max-Series™ and ProLine™ deliver the best cleaning Dolphin makes. See how our top picks stack up head-to-head:
