Head-to-Head

Dolphin Premier vs Dolphin S400

A side-by-side comparison of the Dolphin Premier and Dolphin S400 — price, filtration, cleaning coverage, brushes and warranty — to help you pick the right Dolphin robotic pool cleaner.

Feature Premier S400
Overview
Price $2499$1949 MSRP $1799
LineupProLine™S-Series™
Best forMultiple filter optionsSpecialty-retailer line
Pool sizeUp to 50 ftUp to 50 ft
Cleaning coverageFloor + Walls + WaterlineFloor + Walls + Waterline
Cleaning cycle3 hours2 hours
Suction4,500 GPH4,000 GPH
Scrubbing brushes2 (Active brushes)2 (active)
FiltrationMultiMedia™ + NanoFilters™Multi-layer filter basket
Standout features
Waterline cleaning Included Included
3-year warranty Included No
NanoFilters™ included Included No
MultiMedia™ filtration Included No
Media-Alert™ Included No
Oversized leaf bag Included No
App control No Included
Anti-tangle swivel Included Included
Corded power Included Included
Commercial-grade motors Included No
Navigation & ownership
NavigationSmartNav 2.0™Not published
Weekly schedulingWeekly timerWeekly timer
App controlNo app controlmyDolphin™ Plus app
Cable55 ft with anti-tangle swivelAnti-tangle swivel cable
What is included
  • Standard filters
  • NanoFilters™
  • Oversized leaf bag
  • Weekly-timer power supply
  • 55 ft swivel cable
  • Multi-layer filter basket
  • App-connected power supply
  • Caddy
Warranty3 years2 years
Cleaning coverage

Waterline cleaning

Why it matters

Dolphin Premier vs Dolphin S400: how they compare

The Dolphin Premier is part of the ProLine™ lineup — the only Dolphin with swappable MultiMedia™ filtration. It cleans pools up to 50 ft with floor + walls + waterline coverage and MultiMedia™ + NanoFilters™ filtration, backed by a 3-year warranty.

The Dolphin S400 is part of the S-Series™ lineup — a specialty-retailer model with myDolphin™ Plus app control and a caddy in the box. It handles pools up to 50 ft with floor + walls + waterline coverage and Multi-layer filter basket filtration, backed by a 2-year warranty.

Our verdict: the Dolphin Premier wins

The Dolphin Premier is our pick. As part of the ProLine™ — one of our two top-recommended lineups — it steps ahead of the Dolphin S400 with floor + walls + waterline coverage, MultiMedia™ + NanoFilters™ filtration and a 3-year warranty.

The Dolphin S400 lists at a lower MSRP of $1799, but the step up to the Dolphin Premier buys a meaningfully better clean and longer coverage that's well worth it.

Not sure yet? We're here to help

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.

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