RELEASED 2020REASSESSED 2026.08.07

Maytronics

Dolphin Nautilus CC Supreme

Name: Dolphin Nautilus CC Supreme
Brand: Maytronics

Corded reliability over battery anxiety. Preset zone coverage ensures consistent weekly cleaning at higher purchase cost; zero obstacle avoidance requires manual intervention.

Autonomy Ladder

Why Level II.

One five-rung scale, every category, from acting only on command to working unsupervised anywhere.

VGeneralized AutonomyAny task, any setting. No consumer robot has reached it.
IVEnvironmental AutonomyCopes with everyday clutter and frees itself, shown by independent testing.
IIIConditional AutonomyFinishes whole jobs in familiar spaces; struggles at the edges.
To reach Level IIIMost sessions finish without intervention. Rescue is occasional, not routine.
IIAssisted AutonomyThis robot

Dolphin Nautilus CC Supreme runs preset routines on its own, and the owner is its recovery system.
What it does on its own
- Scanning coverage of floor, walls and waterline on a fixed cycle.
- Brush and propeller drive for debris agitation and mobility.
- Weekly schedule with delayed start and remote start through the MyDolphin Plus app.
- Corded power, so cycle length does not depend on a charge.
- Top-load cartridge filtration; fine and ultra-fine cartridge kits ship in the box.
Why this level
- Classified at Level II, Assisted Autonomy.
- The unit runs a scanning coverage algorithm rather than a stored map, on a cleaning cycle fixed at either 1.5 or 2.5 hours and chosen in the MyDolphin Plus app.
- There are no zones to select or program.
- The owner positions the cleaner, manages cord deployment, and lifts it out at the end of every session, and the unit carries no obstacle detection.
- Systematic coverage of a known pool within a fixed cycle qualifies as subtask autonomy.
What holds it at Level II
- No obstacle detection or avoidance; the cleaner works by contact and may need repositioning if it hangs on a feature.
- No stored map; coverage is computed live by the scanning algorithm, so nothing is carried between cycles and nothing adapts to a changed pool.
- Cycle selection is limited to the fixed 1.5 and 2.5 hour options in the app.
- The owner places the cleaner in the pool and removes it at the end of every cycle.
Autonomy dimension 47 / 100 · 5 sources reviewed
IManual AutomationOne action on command; no independent operation.

How we assign a level →

Behind the classification

Sources we reviewed.

Provisional5 sources reviewed

Enough has been reviewed to classify, but gaps remain across source types.

Sources reviewed

Press & video reviews3 sourcesReviewed

Third-party pool equipment evaluators comparing mid-tier corded models

Longitudinal signal2 sourcesReviewed

Robovations dated log for this robot: 3 tracked entries spanning ~14 months.

Firmware release notes1 sourceOngoing

Maytronics publishes firmware releases and software notes through its support portal, and updates reach this model through the MyDolphin Plus app. No release notes specific to the Nautilus CC Supreme are linked here; the portal is reviewed on an ongoing basis.

Maytronics Dolphin supportmaytronics.com

Specification sources2 sourcesReviewed

Pages the published specifications were read from.

Also monitored, nothing listed yet

Manufacturer documentationPending

Maytronics official product manual and MyDolphin Plus app documentation

Owner reportsOngoing

Pool service forums and consumer review aggregators documenting maintenance intervals

Independent teardownPending

Service technician notes on impeller design, cartridge compatibility, and wear patterns

How we evaluate evidence →

Human Readiness

Ready Now.

One question: what does buying this robot today walk you into? The state is computed from the record, and recomputed daily.

Ready NowThis robot

Dolphin Nautilus CC Supreme is on sale, assessed, and nothing on its record argues for waiting.
How this was derived
- Shipping past the first-90-day ownership window with a published assessment, no documented issues on record, and no announced successor.
Notes on the record
- Available through major retailers with consistent inventory.
- Setup means a Maytronics account and a Wi-Fi connection for MyDolphin Plus, which holds cycle selection and the weekly schedule.
- Ongoing effort: lift the cartridge out of the top of the robot and rinse it with a hose, replace brushes every one to two seasons, and winterize in freeze-thaw climates.
On the record
- Shipping since January 2020 · 80 months on the market
- Retail listings on file: Amazon
- No successor announced
- 5 sources reviewed
What would move it
A documented problem, an announced successor, or a withdrawn listing moves it out; the rating recomputes daily.
New to MarketOn sale under 90 days; the ownership record is still forming.
WaitA successor is announced and has not shipped; re-read the decision when it arrives.
Known IssuesDocumented problems stand on the record; read the case before buying.

How we assess readiness →

Robovations Score

How this number was reached

72of 100

StrongAt or above 76% of the 432 robots we scoreand 94% of the 64 scored robot pool cleaners

DeficientLimitedCapableStrongExemplary

Measured on 8 of the 9 inputs10% not counted

Our assessment did not establish an independent source for edge-case recovery on this machine, so that input is left out of the score rather than guessed at, and the rest re-weighted to fill the space. A gap in what we have been able to verify is not evidence against the robot. Where a whole pillar has nothing measured, we publish no number at all.

What moved itpoints gained or lost against a typical robot

Carried by

Field failure rate100+4.8
Support longevity100+3.8
Consumables80+0.9

Held back by

Coverage and navigation50−2.0
Task completion62−1.6
Routine maintenance56−1.3

Capability40% of the score59What it does without you.

Task completion16% of the score62

Evidence

Poolbots' hands-on review found the filters "fill up quickly, and you may have to empty them every 45 minutes to an hour before it can start cleaning again," and that it does not clean a tanning ledge or underwater steps, "so you'll need to manually clean those." Poolexpress's test in a 40ft gunite pool had it collecting loose debris, leaves and even acorns, so the pool surfaces themselves are covered while a human services it mid-job and finishes the steps by hand.

Coverage and navigation10% of the score50

Evidence

Poolbots reports its CleverClean routes "didn't appear that advanced or calculated in its cleaning paths" even though coverage was solid, and an owner review on RoboticReviews says it does not map the pool, so "you just have to run it more often" to get the job done. Coverage is complete but unplanned and re-established each run, with nothing retained.

Edge-case recoverynot countedno source verified26

Evidence

The record states there is no obstacle detection or avoidance, the cleaner works by contact, and systematic pathfinding does not include automatic backtracking. Every entry in its own recovery_behavior list ends the same way: lift the unit out, clear it, restart. A loaded cartridge it cannot clear at all, and in obstacle-dense pools the record puts manual repositioning at every 2 to 3 cycles. This is the category trap named in the rubric, with a small credit for an app that at least logs that a cycle ran.

Operating envelope4% of the score70

Evidence

Corded power makes cycle length independent of a charge, and high turbidity is handled by rinsing more often rather than buying different media, since both a fine and an ultra-fine cartridge kit ship in the box. Three documented constraints: standard geometries only, with attached spas, island features and steps able to hang the cleaner; the fixed cycle bounding coverage above roughly 50 ft; and mandatory winterization in freeze-thaw climates, at 2 to 3 hours of owner labor.

Dependability40% of the score88Whether it keeps doing it.

Field failure rate16% of the score100

Evidence

Six years since 2020 on a mature Maytronics line with no CPSC recall, and a documented 6 to 8 year lifespan in pool service fleets with propeller seal failures described as rare in maintained units. All four documented failure modes are clearable or consumable rather than job-stopping: cartridge loading, brush wear over one to two seasons, a swivel that seizes and causes cable twist, and debris in the tracks. Held below the isolated-failures anchor because Maytronics publishes no failure-rate data, no warranty-handling record exists, and the teardown source in the record is still pending.

Software stability14% of the score65

Evidence

The ordinary state, on the better side of it: Maytronics runs a public support portal publishing firmware releases and software notes, and updates reach this model through MyDolphin Plus, so a channel exists and is used. Nothing model-specific is published for the CC Supreme and no independent record of what any update changed exists. Updates ship, no regression pattern is reported, and the record is genuinely silent in both directions.

Support longevity10% of the score100

Evidence

The strongest position of any input on this record, and demonstrated rather than promised. Maytronics has manufactured pool cleaners for 50-plus years, runs a dealer network with parts priced by dealer, and the Nautilus CC is among the most widely stocked lines in the independent pool aftermarket. Brushes, cartridges and the impeller are owner-replaceable with basic tools, which the record calls out as a design property. Discounted for no published software support window and no published cartridge pricing.

Ownership burden20% of the score66What it asks of you.

Routine maintenance12% of the score56

Evidence

Every cycle: deploy and coil the cord, lower and lift 24.6 lb over the coping, then pull the cartridge out of the top, unsnap the bottom, hose it and rinse the brush area, with no self-cleaning function anywhere. Weekly cable and swivel inspection, brushes every one to two seasons, and 2 to 3 hours of winterization annually in freeze-thaw climates. In obstacle-dense pools add a repositioning trip every 2 to 3 cycles.

Consumables8% of the score80

Evidence

Both a fine and an ultra-fine cartridge kit ship in the box, so heavier sediment means a different insert already owned rather than a purchase, and cartridges are rinsed and reused with no subscription. Marked down against the basket-filtration Dolphins because cartridges are genuinely replaced eventually, Maytronics publishes neither an interval nor a price, and brushes at one to two seasons is a faster cadence than most of this category. The wide independent aftermarket keeps those prices honest.

middle half of the databaseits medianthis robot

Reported, not scoredneither measures how well the robot works

Five-year cost$1,850

mid to upper range for robotic pool cleaners at $1,449 list and $1,200 to $1,800 street, plus roughly $400 over five years in brushes, cartridge kits and dealer-priced impeller or track service; no subscription, but operating it as sold requires a Maytronics account, and cycle selection, scheduling and history are behind it

Data postureCloud-linked

Account required. Maps and telemetry leave the home; core function survives an outage.

What leaves the homeDocumented

The Nautilus CC Supreme is a Wi-Fi connected cleaner operated through the MyDolphin Plus app, which requires a Maytronics account. Remote start, the weekly scheduler with delayed start, and stored cleaning history all live in the app, so cycle records pass through and are held on Maytronics servers. Bluetooth serves as a local fallback when the pool is out of Wi-Fi range. Retention and deletion terms for stored cleaning history are not stated on the product page.

On-device processingNo

Read the full methodology →

FIT CHECK

Will the Dolphin Nautilus CC Supreme work in your pool?

Describe your pool using the controls. Each choice reads the spec sheet for you, flagging where the Dolphin Nautilus CC Supreme is built for your space and where it isn’t.

Pool type

Pool size

Debris load

Coverage you want

See every pool cleaner suited to these conditions

A classification of fit for the conditions you set, not a recommendation. Verdicts describe engineering design intent, not test results.

SPECIFICATION

The full spec sheet.

Priced above the category median, with every figure charted against the category below.

Dimensional drawing

Key specificationsManufacturer-published

Footprint: 16 × 16.7 in · 10.3 in tall•
Weight: 24.63 lbs•
Wi-Fi: Supported✓
Cycle length: 150 minutes•
Max pool length: 50 ft•
Surfaces cleaned: Floor, walls and waterline✓
Power type: Corded✓

Where it lands · ranked across 75 robot pool cleanersThis robotMedianTypical range

Price$1,449

$299$4,250

Near median

Noise72dB

52 dB82 dB

Near median

Weight24.63lbs

7.9 lbs46.3 lbs

Near median

Position shows where the figure sits across the tracked category, not a quality judgment.

Official referencesProduct page

OWNERSHIP

Living with it.

Mature 50-year design with proven 6-8 year lifespan and consistent satisfaction across 1000+ installations.

Brush wear and cartridge degradation are documented in owner forums at predictable intervals. No firmware affects reliability. Field validation across pool service installations confirms stable performance.

Owner effort~85 minhands-on per month

Consumables$120replaceable parts / yr

Reliability trend Stableowner-reported arc

What goes wrong · 4 documented · 1 self-recover

Common

Brush bristle sheddingBristles clog motor intake after 2-3 seasons

Owner fixReplace brush cartridge

Occasional

Cord entanglementCleaner halts on cord kinks (2-3 times per season)

Owner fixManually untangle and reposition unit

Occasional

Cartridge cloggingReduced suction after 4-5 weeks in high-sediment water

Self-recoversInitiate backflush cycle via control box

Rare

Propeller blade fractureRare fracture when unit runs against wall overnight

Owner fixReplace propeller blade ($80-150)

Step-by-step fixesFilter or Cartridge Clogging Fast?Brushes or Tracks Not Scrubbing?Cable Tangling, Coiling, or Floating?All robot pool cleaner guides

Upkeep routine

Each useEvery cycle

Lift the filter cartridge out of the top of the robot, unsnap the bottom and rinse it with a hose; rinse debris from the brush area.

Weekly52×/yr

Inspect the cable for kinks or cuts and check that the anti-tangling swivel turns freely.

Yearly1×/yr

Winterization in freeze-thaw climates: drain the unit, remove the cartridge, store indoors.

As neededno fixed schedule

Replace the brushes as the bristles wear down. · Impeller or drive track service if the unit loses traction or suction that a filter rinse does not restore; parts pricing varies by dealer.

Cost over time · past the sticker

PurchaseRunning cost

Year 1

$1,569

Year 3

$1,809

Year 5

$2,049

$1,449 to buy, then about $120 a year for the replaceable parts below. Over three years that is roughly $360 past the sticker price. Excludes electricity and any repairs.

What you replace

BrushEvery 1-2 seasons

Replacement cadence from the maintenance schedule; prices shown where the source documents them.

Safety notes

NoteElectrocution eliminated by GFCI: Corded design safe when used with properly grounded GFCI outlet per Maytronics spec.

CautionSmall animal entrapment risk: Lack of obstacle avoidance can trap small animals in corner pockets during unattended operation.

CautionCord entanglement hazard: Cord can entangle around intake if routed carelessly. Supervision recommended on first use.

RECORD

How the assessment has moved.

Every announcement, release and reassessment behind the current classification.

Coming soon

Just launched

Active updates

Settled

Discontinued

Sep 2026 · AssessmentRecord status: Verified → Provisional
Aug 2026 · AssessmentRobovations Score revised 73 → 72
Aug 2026 · AssessmentRobovations Score rescored under v4.2: 66 → 73
Jul 2026 · AssessmentRobovations Score revised 65 → 66
Jul 2026 · AssessmentRobovations Score recorded at 65 of 100
Mar 2024 · UpdateCC Supreme cartridge filter compatibility expanded to third-party suppliers
Aug 2023 · ReleaseLaunches at major US retailers

Editorial comparisons

How Dolphin Nautilus CC Supreme compares.

All comparisons →

Goal-based

Cordless vs corded robot pool cleaners: which is better?

Beatbot AquaSense Pro + 3 more

Read comparison

Goal-based

Pool robots for above-ground vinyl pools: weight, climbing, and skimmer compatibility

Aiper Seagull Pro + 3 more

Read comparison

Comparison

Smart-mapping vs random-path pool cleaners: when does mapping return on investment?

Beatbot AquaSense 2 Pro + 3 more

Read comparison

Common questions

What people actually ask.

8 answered

CompatibilityDoes the CC Supreme require a smartphone app?

The Supreme is a Wi-Fi connected cleaner and Maytronics operates it through the MyDolphin Plus app, which needs a Maytronics account. The cleaning cycle selection, the weekly schedule with delayed start, remote start and the stored cleaning history are all in the app, with Bluetooth as a local fallback when the pool is out of Wi-Fi range. App connectivity is the difference between this model and the cheaper Nautilus CC Plus, whose app is deliberately limited. Whether the power supply alone will start a cycle without the app is not stated in Maytronics’ product material.

OperationWhat happens if the cord gets tangled during cleaning?

The cleaner stops on contact with obstacles or kinks. Owner must manually untangle the cord and reposition the unit. Systematic pathfinding does not include automatic backtracking. For pools with high obstacle density, manual intervention may occur every 2-3 cleaning cycles.

OwnershipHow often does the cartridge filter need maintenance?

There is no backflush or self-cleaning cycle on this machine. The filter lifts out of the top of the robot, the bottom unsnaps, and you rinse it with a hose; do that after cycles in normal debris and more often in heavy sediment. The Supreme ships with both a fine and an ultra-fine cartridge kit, so a replacement set is not an immediate purchase. Maytronics does not publish a replacement interval, and cartridge kit pricing varies by retailer.

OperationIs winterization required?

In climates with freezing temperatures, yes. Maytronics documentation mandates drainage and storage to prevent ice damage to impeller seals and cartridge housing. Owners report 2-3 hours of labor for full winterization. Mild climates may skip this step.

OperationWhat is the typical operating runtime per cycle?

The Supreme runs a fixed cycle of either 1.5 or 2.5 hours, selected in the app, and stops itself at the end. There is no per-pool duration setting and no way to run it open-ended, so in a larger pool coverage is bounded by the cycle rather than by a target area. The cycle covers floor, walls and waterline.

ComparisonCan the CC Supreme be used in pools smaller than 30 feet?

Yes. Cycle length is fixed at 1.5 or 2.5 hours regardless of pool size, so a small pool gets the same run time as a large one and the cleaner simply covers the same ground more than once within the cycle. Maytronics does not direct smaller pools to a different Nautilus model.

OwnershipHow reliable is the brush and propeller drive over time?

Owner reports and independent service records show brush wear requiring replacement every 1-2 seasons. Propeller seals are durable; failures are rare in properly maintained units. Longevity averages 6-8 years with routine maintenance.

OperationWhat evidence backs the Level II classification?

The cleaner runs a scanning coverage algorithm rather than a stored map, on a cycle fixed at 1.5 or 2.5 hours in the app. It works the floor, walls and waterline without intervention once running, but it has no obstacle detection, and the owner puts it in the pool and takes it out every session. Covering a known pool within a fixed cycle qualifies as subtask autonomy, not routine autonomy with occasional intervention.

Availability

Where it's sold

We may earn commission from qualifying purchases. This does not influence classification.

Amazon See current listings

Cite / Embed

Reference the Dolphin Nautilus CC Supreme classification.

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Citation

Robovations. "Dolphin Nautilus CC Supreme: Autonomy Level II (Assisted Autonomy)." Autonomy Ladder™, assessed August 2026. https://robovations.com/robots/dolphin-nautilus-cc-supreme/

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Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the Dolphin Nautilus CC Supreme and Hayward TigerShark QC side by side: autonomy level, Robovations Score, readiness, and price. Classification, not a verdict.

See the full comparison

Or compare with Maytronics Dolphin Nautilus Titan, Polaris 9450 Sport, Maytronics Dolphin S200.

For browsers

See every Level II.

Every robot we’ve classified at assisted autonomy. Sorted by readiness, score, and price. Filter by category, manufacturer, or release date.

Browse the database

Updated weekly with new entries and reclassifications.

Dolphin Nautilus CC Supreme

Will the Dolphin Nautilus CC Supreme work in your pool?

The full spec sheet.

Living with it.

How the assessment has moved.

How Dolphin Nautilus CC Supreme compares.

Cordless vs corded robot pool cleaners: which is better?

Pool robots for above-ground vinyl pools: weight, climbing, and skimmer compatibility

Smart-mapping vs random-path pool cleaners: when does mapping return on investment?

What people actually ask.