Quick Answer: For most pool owners, Dolphin is the better buy — its robotic cleaners run independently of your pump, scrub floors and walls, and cost less to operate. Choose Polaris if you have heavy leaf debris and want a pressure-side cleaner that bags large debris before it reaches your filter. The flagship matchup is the robotic Dolphin Nautilus CC Plus vs the pressure Polaris 360.

Dolphin and Polaris are two of the biggest names in pool cleaning, but they’re best known for different technologies. Understanding that difference is the key to choosing.

Dolphin vs Polaris at a glance

Dolphin (Maytronics)Polaris (Fluidra)
Known forRobotic cleanersPressure-side cleaners
Power sourceOwn low-voltage motorReturn line / booster pump
Pump strainNone — fully independentUses your pool's pump
Best atScrubbing walls, floor, waterlineCollecting large leaves & debris
Running costVery low (pennies per cycle)Higher (pump runtime)
FlagshipNautilus CC Plus (~$799)Polaris 360 (~$549)

Dolphin: the robotic specialist

Dolphin Nautilus CC Plus

Best robotic pick · ~$799
  • Self-contained robot — no hoses, no strain on your pump.
  • Dual active brushes scrub floor, walls, and waterline.
  • Easy top-load filter basket and weekly scheduling.
  • Runs on pennies of electricity per cycle.
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Dolphin (made by Maytronics) is the leading robotic-cleaner brand. Its robots have their own motor and filter, so they don’t load your pump or filter system, and they actively scrub surfaces rather than just collecting debris. They’re the most energy-efficient option and the best at leaving walls and waterline genuinely clean. For most modern pools, this is the technology to choose — see our full best robotic pool cleaner guide.

Polaris: the pressure-cleaner king

Polaris Vac-Sweep 360

Best for heavy debris · ~$549
  • Pressure-side cleaner with its own debris bag.
  • Bags leaves, acorns, and pebbles before they reach your filter.
  • No separate booster pump required for the 360.
  • Ideal for pools under heavy tree cover.
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Polaris (now part of Fluidra) built its reputation on pressure-side cleaners. Because they collect debris in their own bag instead of pulling it through your filter, they excel at handling large debris — the classic choice for leaf-heavy yards. Polaris also makes robotic models (the VRX and Freedom lines) if you want to stay in the brand but go robotic.

Which should you buy?

If you’re open to other brands too, our best automatic pool cleaner guide compares robotic, suction, and pressure cleaners side by side.

The bottom line

For most pools in 2026, Dolphin’s robotic cleaners are the better all-round choice — efficient, thorough, and easy on your equipment. Polaris earns its place for leaf-heavy pools where a pressure cleaner’s debris bag is the real advantage. Decide by your debris load and how much you value scrubbing power versus bagging capacity.