Head-to-Head

Dolphin T45 vs Dolphin S400

A side-by-side comparison of the Dolphin T45 and Dolphin S400 — price, filtration, cleaning coverage, brushes and warranty — to help you pick the right Dolphin robotic pool cleaner.

Feature T45 S400
Overview
Price MSRP $1649 MSRP $1799
LineupT-Series™S-Series™
Best forPool-store editionSpecialty-retailer line
Pool sizeUp to 50 ftUp to 50 ft
Cleaning coverageFloor + Walls + WaterlineFloor + Walls + Waterline
Cleaning cycle2 hours2 hours
Suction4,000 GPH4,000 GPH
Scrubbing brushes2 (active)2 (active)
FiltrationFine filter basketMulti-layer filter basket
Standout features
Waterline cleaning Included Included
3-year warranty No No
NanoFilters™ included No No
MultiMedia™ filtration No No
Media-Alert™ No No
Oversized leaf bag No No
MaxBin™ filtration No No
HyperBrush™ scrubbing No No
App control Included Included
Anti-tangle swivel Included Included
Corded power Included Included
Navigation & ownership
NavigationNot publishedNot published
Weekly schedulingWeekly timerWeekly timer
App controlmyDolphin™ Plus appmyDolphin™ Plus app
CableAnti-tangle swivel cableAnti-tangle swivel cable
What is included
  • Fine filter basket
  • Ultra-Fine Filter kit
  • App-connected power supply
  • Caddy
  • Multi-layer filter basket
  • App-connected power supply
  • Caddy
Warranty2 years2 years
Cleaning coverage

Waterline cleaning

Why it matters

Dolphin T45 vs Dolphin S400: how they compare

The Dolphin T45 is part of the T-Series™ lineup — a pool-store edition in lime trim with myDolphin™ Plus app control and a caddy in the box. It cleans pools up to 50 ft with floor + walls + waterline coverage and Fine filter basket filtration, backed by a 2-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 S400 wins

Between these two, the Dolphin S400 is the stronger robot on paper — a specialty-retailer model with myDolphin™ Plus app control and a caddy in the box. It cleans with floor + walls + waterline coverage and Multi-layer filter basket filtration, backed by a 2-year warranty.

Our top recommendation: neither of these is in our two best lineups. For the best clean in this price range, step up to the Dolphin Quantum Pro from our ProLine™ — our top pick, highlighted at the top of this comparison.

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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