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Dolphin M550 Robotic Pool Cleaner vs Dolphin M600 Robotic Pool Cleaner

The M600 is the stronger cleaner on paper and in owner feedback: dual active brushes, multi-layer filtration with an ultra-fine kit, and a 4.9 rating from 275 owners against 4.7 from 169 for the M550. The M550 is the simpler, lighter machine with one active brush and a fine-plus-ultra-fine filter setup, and owners say it climbs walls and the waterline well and rarely hangs on main drains. Buy the M600 if you want the best scrubbing and filtration and can live with a heavier robot; buy the M550 if you want proven wall climbing and easier handling.

  • Choose the Dolphin M550 if you want a lighter robot that owners say climbs walls and the waterline reliably and does not get stuck on main drains.
  • Choose the Dolphin M600 if you want dual active scrubbing brushes, multi-layer filtration with an ultra-fine kit, and the higher owner rating.

Prices

  • Dolphin M550 Robotic Pool Cleaner: $1,899.00 at Pelican Shops Direct (last seen Nov 10)
  • Dolphin M600 Robotic Pool Cleaner: $2,149.00 at Pelican Shops Direct (last seen Nov 10)
  • Difference: the Dolphin M550 Robotic Pool Cleaner is $250.00 cheaper than the Dolphin M600 Robotic Pool Cleaner at the latest prices (Nov 10)
Dolphin
Dolphin M550 Robotic Pool Cleaner

Dolphin M550 Robotic Pool Cleaner

4.7(169 ratings)
$1,899.00at Pelican Shops DirectChecked Nov 10
See all prices and details
Visit Pelican Shops Direct
Pros
  • Owners report reliable wall and waterline climbing
  • Does not get stuck on main drains, per owners
  • Lighter at about 22.6 lb
  • Large top-load filter basket is easy to clean
  • Anti-tangle swivel cable
Cons
  • Only 1 of the 2 brushes is active
  • Only 2 of the 4 filters are ultra fine
  • Owners call the app glitchy
  • Caddy is flimsy; the cleaner and control box fall off
  • Owners say the floor sometimes needs two cycles
Dolphin
Dolphin M600 Robotic Pool Cleaner

Dolphin M600 Robotic Pool Cleaner

4.9(275 ratings)
$2,149.00at Pelican Shops DirectChecked Nov 10
See all prices and details
Visit Pelican Shops Direct
Pros
  • Dual active scrubbing brushes
  • Multi-layer filtration with an ultra-fine filter kit
  • Highest owner rating of the two
  • Smart navigation adapts to pool shape
  • Premium caddy owners find easy to use
Cons
  • Heavier at about 24.3 lb
  • Some owners report sliding back down walls
  • Sometimes gets stuck on the main drain cover
  • Does not always return to the surface or chosen side
  • Power supply controls are awkward

What separates them

Dolphin M550 Robotic Pool CleanerDolphin M600 Robotic Pool Cleaner
Brushes2 brushes, 1 active2 dual active scrubbing brushes
FiltrationLarge top-load basket; fine and ultra-fine filters included, but only 2 of 4 are ultra fineMulti-layer filtration plus a separate ultra-fine filter kit
Owner rating4.7 out of 5 from 169 ratings4.9 out of 5 from 275 ratings
WeightAbout 22.6 lb, easier to liftAbout 24.3 lb, owners call it heavier than expected
App controlMyDolphin Plus over Wi-Fi; owners report glitchesMyDolphin Plus with scheduling; owners say it works well
Wall and waterline climbingOwners praise wall and waterline climbing; does not get stuck on main drainsCleans walls and waterline, but some owners report sliding back down and hanging on drain covers
CaddyCaddy included; owners say it is poor quality and the cleaner falls offPremium caddy included; owners say it makes transport and storage easy
Pool sizeRated to 50 ftRated to 15 m (about 49 ft)

Prices at every store

Dolphin M550 Robotic Pool Cleaner

  • Pelican Shops DirectNew

    In stockReturn policy

    $1,899.00Checked Nov 10
    Visit Pelican Shops Direct
Prices and history →

Dolphin M600 Robotic Pool Cleaner

  • Pelican Shops DirectNew

    In stockReturn policy

    $2,149.00Checked Nov 10
    Visit Pelican Shops Direct
Prices and history →

Specs compared

SpecDolphin M550 Robotic Pool CleanerDolphin M600 Robotic Pool Cleaner
Maximum pool length50 ft15 m
Cleaning coverageFloor, Walls and WaterlineFloor, Walls and Waterline
Default cycle time2 Hours2 Hours
Robot weight22.579 lb11.04 Kg.
Net height12.531 inch31.83 cm
Net length17.406 inch44.21 cm
Net width15.839 inch40.23 cm
Number of brushes22
Suction rate5000.0 gph17.0 Mᶾ / H
Warranty3—
Mobile applicationMyDolphin™ Plus—
Caddy includedCaddy—
Show all 15 specsShow fewer specs
SpecDolphin M550 Robotic Pool CleanerDolphin M600 Robotic Pool Cleaner
Filter Type—Multi-Layer
Additional Filter—Ultra-Fine Filter Kit
Cable Length—17.0 m

What reviewers say

Dolphin M550 Robotic Pool Cleaner

  • 4.7 / 5169 ratings

Rated 4.7 out of 5 from 169 ratings. Owners say it cleans thoroughly, climbs walls and the waterline well, and is easy to empty and manage. Complaints center on the app, the caddy and the sparse instructions.

What people mention
  • Cleaning performancePraisedOwners say it picks up fine dirt and debris and cleans the pool thoroughly.
  • Wall and waterlinePraisedReviewers report strong climbing and waterline scrubbing.
  • AppMixedCalled user friendly and simple by some, but glitchy by others.
  • CaddyCriticisedOwners say the caddy is poor quality and the cleaner and control box fall off it.

Dolphin M600 Robotic Pool Cleaner

  • 4.9 / 5275 ratings

Owners give the M600 very high marks for cleaning power and clear water, and many say it cut their manual maintenance sharply. Complaints center on wall climbing, drain snags and the controls rather than cleaning results.

What people mention
  • Cleaning coveragePraisedOwners say it cleans floor, walls and waterline well, including tile and steps.
  • Wall climbingMixedMany pools get full wall coverage, but some owners report it slides back down.
  • Drain snagsCriticisedIt sometimes gets stuck on the main drain cover.
  • Filter basketPraised

Questions and answers

Which is better for a pool with a lot of fine dirt?
The M600. Its multi-layer filtration plus the included ultra-fine kit is built for fine particles, and owners report clear water. The M550 includes ultra-fine filters too, but only 2 of its 4 are ultra fine.
Which climbs walls better?
The M550, by owner reports. M550 owners praise wall and waterline climbing and say it does not get stuck on main drains. Some M600 owners say it slides back down walls.
Is the M600 worth stepping up to?
Yes if scrubbing and filtration matter most. You get dual active brushes, the full ultra-fine kit and a higher owner rating. The M550 is the better pick if weight and wall climbing matter more.
Which is easier to lift and store?
The M550. It weighs about 22.6 lb against about 24.3 lb for the M600, and M600 owners call it heavier than expected. Both ship with a caddy, though M550 owners complain theirs is flimsy.
Do both clean the waterline?
Yes. Both are rated for floor, walls and waterline with a 2-hour default cycle. The M600 does it with two active brushes; the M550 uses one active brush.
Which has the better app?
The M600. Both use MyDolphin Plus, but M600 owners say the app and scheduling work well, while M550 owners report glitches.

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The large top-load basket is easy to empty and holds fine and coarse debris.