RELEASED 2013REASSESSED 2026.08.25

Polaris

Polaris 9550 Sport

Name: Polaris 9550 Sport
Brand: Polaris

A mains-powered in-ground cleaner that climbs walls and steps, vacuums to a 5 L canister and runs unattended on a 7-day timer. The 70 ft cable and the caddy are the ownership overhead; there is no app, no network and no battery.

Superseded byPolaris EPIC 8520

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

Polaris 9550 Sport runs preset routines on its own, and the owner is its recovery system.

Navigation and control

Gyroscopic stabilization with pre-programmed cleaning patterns and five selectable cleaning modes. The cable is a power tether with an anti-tangle swivel; it does not guide or bound the route. A motion-sensing handheld remote provides an operator steering override.
Why this level
- 4WD drive and gyroscopic navigation run pre-programmed cleaning patterns, and an onboard 7-day timer starts cycles with no operator present.
- The motion-sensing handheld remote is an optional override rather than a requirement, so its availability does not reduce what the unit does unattended.
- Level II is the ceiling because the unit runs a fixed pattern repertoire rather than a mapped, adaptive route, and reports nothing back.
Autonomy dimension 47 / 100 · 2 sources reviewed
IManual AutomationOne action on command; no independent operation.

How we assign a level →

Behind the classification

Sources we reviewed.

Pending2 sources reviewed

Evidence is still being collected for this product.

Sources reviewed

Specification sources1 sourceReviewed

Pages the published specifications were read from.

polarispool.compolarispool.com

Monitoring record1 sourceReviewed

Sources behind the tracker entries following this robot.

WaterShapesWaterShapes

Also monitored, nothing listed yet

Manufacturer documentationReviewed

Product manual and technical specifications covering 4WD drive system, dual-brush design, remote control range, cable storage, and dock integration architecture.

Owner reportsReviewed

Aggregate owner forum posts and retailer reviews spanning 8-11 years of cumulative deployment. Cable durability, motor longevity, seasonal maintenance patterns, and comparison to newer cordless models documented.

Press & video reviewsReviewed

Industry publications and specialty pool publications covering 9550 Sport design and performance. Reviews focus on premium positioning and cable infrastructure trade-offs.

Longitudinal signalOngoing

Multi-season ownership tracking across northern and southern climates documenting winterization, seasonal storage, and multi-year operational consistency.

Firmware release notesOngoing

Polaris publishes firmware releases and software notes through its support portal; reviewed on an ongoing basis.

How we evaluate evidence →

Human Readiness

Discontinued.

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

DiscontinuedThis robot

Polaris 9550 Sport is discontinued. Remaining listings are old stock at uncertain prices, which no buying-today tier describes.

Listings under Availability are shown for reference, not as a purchase path.

On the record

Released January 2013; since discontinued
Succeeded by Polaris EPIC 8520
2 sources reviewed

The scale, for reference

Ready NowAssessed, with a clean record on file. A successor may be shipping; the page says so when it is.
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

63of 100

CapableAt or above 30% of the 436 robots we scoreand 39% of the 64 scored robot pool cleaners

DeficientLimitedCapableStrongExemplary

What moved itpoints gained or lost against a typical robot

Carried by

Field failure rate100+4.8
Support longevity73+1.1

Held back by

Software stability33−4.5
Coverage and navigation50−2.0
Routine maintenance59−1.0

Capability40% of the score59What it does without you.

Task completion16% of the score70

Evidence

PCMag ran a seeded test in its own 16-by-32-foot gunite pool (sand, grass clippings, acorns): after the default 90-minute floor cycle 'the bottom of my pool was spotless with a few exceptions; one acorn and several blades of grass remained', and the reviewer had to steer it back with the remote and make three passes before the acorn was picked up. It finishes most of the work area with an occasional human closing the loop.

Coverage and navigation10% of the score50

Evidence

PCMag watched it run a fixed 'serpentine-like cleaning pattern' set by the pool-shape option chosen before the run, shallow end to deep on one pass and then side to side back, with debris still left at the end. The Pool Nerd, reviewing it with his own photos, calls the 9550's navigation and filtration 'disappointing'. The pattern is re-established from a setting on every run, with nothing retained.

Edge-case recovery10% of the score45

Evidence

PoolCleanerGuides notes the 70-foot floating cable 'does not have a swivel device', so 'the cable tends to tangle itself' and must be untangled by hand before storage, and warns that 'if the floating cable tangles up on day two, then the robot will not clean properly on any of the other days'. The machine neither reports nor resolves the condition; PoolBuyerAdvice's curated owner feedback names 'constant tangling of the cord' as the main issue. It degrades silently rather than halting cleanly.

Operating envelope4% of the score68

Evidence

PoolCleanerGuides: it 'is not made for cleaning an above ground pool', it is built for permanently installed inground pools, and the control unit is 'water-resistant, but not waterproof' and has to be stored dry. PoolBuyerAdvice adds that the non-swivel cord 'can cause some issues for people with oddly shaped pools when it passes over itself'. It holds across common inground installations and degrades in one documented setting.

Dependability40% of the score70Whether it keeps doing it.

Field failure rate16% of the score100

Evidence

A strong failure evidence base, and the reason this sits above its siblings: eleven to thirteen years of deployment, twenty-four aggregated owner reports plus three press reviews plus multi-season longitudinal tracking across northern and southern climates, with no recall and no job-stopping pattern. This is not retail review text, so the anchor's cap does not bind. Held below the isolated-failures anchor because no warranty-handling record exists and Polaris publishes no service-life figure for the motor or 4WD drivetrain.

Software stability14% of the score33

Evidence

PCMag's review of the near-identical 9650iQ presents 'Wi-Fi connectivity and a useful mobile app' as what that sibling adds over the 9550, and The Pool Nerd describes the 9550's entire control surface as the power supply plus a tilt remote with a 'dated power supply design'. There is no network path to the machine, so no update channel exists.

Support longevity10% of the score73

Evidence

Discontinued, so new units are channel stock, but the parts commitment is real: brushes, filter media and the cable are each separately replaceable through a major brand's dealer network, and the record puts brushes at roughly $40 to $50 each. Held down because Polaris publishes no fixed replacement interval or price for the brushes and media, and no service-life figure for the drivetrain, so the back end of ownership is undocumented on a model no longer sold.

Ownership burden20% of the score60What it asks of you.

Routine maintenance12% of the score59

Evidence

The heaviest routine among the Polaris units here. Every cycle: lift 21 lb out on the EasyLift system, empty the 5 L canister and rinse the filter media, with the Dirty Canister Indicator at least telling you when it matters. Weekly means inspecting two oscillating brushes and clearing debris wrapped around them, plus inspecting and untwisting 70 ft of cable. The wheeled caddy is a genuine offset, since the unit rolls to the pool edge rather than being carried.

Consumables8% of the score61

Evidence

A genuine scheduled spend, unlike the rinse-clean designs beside it. Two brushes at roughly $40 to $50 each on a 12 to 24 month replacement cycle, plus filter media replaced as wear shows and a cable that is replaced rather than spliced when damaged. That works out near $60 a year on a machine now selling around $999, which is mid-pack, and the dual-brush design that earns the debris handling is what creates the doubled brush cost.

middle half of the databaseits medianthis robot

Reported, not scoredneither measures how well the robot works

Five-year costNot costed

mid-market for robotic pool cleaners, now discontinued and selling near $999; roughly $360 over five years for two brushes on a 12 to 24 month cycle at $40 to $50 each plus filter media, with no subscription and no app

Data postureLocal

Core function needs no account and no network.

What leaves the homeNot documented

Read the full methodology →

FIT CHECK

Will the Polaris 9550 Sport work in your pool?

Describe your pool using the controls. Each choice reads the spec sheet for you, flagging where the Polaris 9550 Sport 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: 19 × 18.5 in · 12.5 in tall
Weight: 21 lbs
Max pool length: 60 ft✓
Filter capacity: 5 L✓
Cable length: 70 ft✓
Surfaces cleaned: Floor, walls and waterline✓
Power type: Corded✓

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

Price$1,959.99

$299$4,250

Above median

Weight21lbs

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.

Eleven years of ownership data confirm motor and drivetrain durability. Cable management and dock seating are the maintenance focal points.

Owner reports and field data document average motor lifespan of 4-6 years with standard maintenance. 4WD drivetrain holds up across sandy, silty, and high-leaf load environments. Cable swivel wear and dock alignment are the primary failure modes, both resolvable through field service.

Owner effort~1.5 hrshands-on per month

Consumables$110replaceable parts / yr

Reliability trend Stableowner-reported arc

What goes wrong · not yet documented independently

The independent record is still forming. Failure modes are listed once an outside source reports them.

Upkeep routine

Each useEvery cycle

Lift the unit out, letting the EasyLift system drain the water as it rises, then empty the 5 L canister and rinse the filter media. The Dirty Canister Indicator signals when the canister needs attention.

Weekly52×/yr

Inspect the oscillating brushes for wear and clear debris wrapped around them. · Inspect the 70 ft cable for cuts, kinks and swivel wear, and untwist it. A damaged cable on a mains-powered submerged appliance is replaced, never spliced or extended.

Seasonal4×/yr

Rinse the unit with fresh water and store it on its caddy out of direct sun and away from freezing temperatures.

As neededno fixed schedule

Replace brushes and filter media. Polaris publishes no fixed replacement interval or price for these parts.

Cost over time · past the sticker

PurchaseRunning cost

Year 1

$2,069

Year 3

$2,289

Year 5

$2,509

$1,959 to buy, then about $110 a year for the replaceable parts below. Over three years that is roughly $330 past the sticker price. Excludes electricity and any repairs.

What you replace

Brush

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

Safety notes

CautionHeavy cable handling and storage: 60-80 foot cables (100+ lbs coiled) require secure storage and careful handling. Trip hazard and entanglement risk for household members.

CautionDock electrical connections: Integrated dock power requirement and salt-cartridge chemistry handling demand proper grounding and periodic inspection per manufacturer.

RECORD

How the assessment has moved.

Every announcement, release and reassessment behind the current classification.

Coming soon

Just launched

Active updates

Settled

Discontinued

Aug 2026 · AssessmentRobovations Score revised 68 → 63
Aug 2026 · AssessmentRobovations Score revised 61 → 68
Aug 2026 · AssessmentRobovations Score rescored under v4.2: 60 → 61
Aug 2026 · AssessmentRobovations Score rescored under v4.0: 67 → 60
Jul 2026 · AssessmentRobovations Score revised 62 → 67
Jul 2026 · AssessmentRobovations Score recorded at 62 of 100
Aug 2014 · ReleasePolaris introduces 9550 Sport robotic pool cleaner to lineup

Common questions

What people actually ask.

5 answered

OperationWhat is the cable length for the Polaris 9550 Sport, and can it be extended?

One length: 70 ft, with a swivel that limits tangling. Polaris does not offer 40, 60 or 80 ft variants of this cable and does not endorse aftermarket extensions. The manual prohibits extension cords, the power supply must be plugged into a GFCI-protected outlet, and the cleaner is removed from the pool before anyone enters the water.

ComparisonHow does the 9550's dual-brush system compare to single-brush designs from competitors?

Dual brushes provide redundancy and more aggressive debris agitation. Trade-off is higher maintenance; each brush requires seasonal inspection and replacement every 12-24 months at approximately $40-50 per brush.

OperationCan the 9550 Sport navigate around obstacles without remote control assistance?

Gyroscopic navigation runs pre-programmed patterns rather than a map of the pool. The unit cleans the floor and climbs walls and steps on oscillating brushes. Published reviews disagree on whether it scrubs the tile line, one describing a blade brush that reaches it and another stating that waterline cleaning is not included, so waterline coverage is unverified. The handheld remote is an optional override for a spot a pattern misses.

OperationDoes the 9550 Sport dose chemicals or sanitize the water?

No. It is a filtering vacuum. Polaris’s Vortex Vacuum technology holds debris in suspension in a 5 L canister so suction does not fall away as the canister fills, and filtered water returns to the pool. Polaris sells no chlorine or salt-sanitizer cartridge for this cleaner, and the caddy it ships with is an unpowered transport cart. Sanitizer stays a separate part of pool care.

OperationWhat is the expected lifespan of the motor and drivetrain under continuous weekly operation?

Polaris publishes no service-life figure for the motor or the 4WD drivetrain, and no inspection interval for its bearings. What is documented: the unit is mains-powered, so there is no battery to degrade, and the brushes, the filter media and the cable are the wear parts. Each of the three is replaceable.

Availability

Where it's sold

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Cite / Embed

Reference the Polaris 9550 Sport classification.

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Citation

Robovations. "Polaris 9550 Sport: Autonomy Level II (Assisted Autonomy)." Autonomy Ladder™, assessed August 2026. https://robovations.com/robots/polaris-9550-sport/

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Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the Polaris 9550 Sport and Maytronics Dolphin Nautilus Titan side by side: autonomy level, Robovations Score, readiness, and price. Classification, not a verdict.

See the full comparison

Or compare with Dolphin Premier, Hayward TigerShark QC, Polaris 9450 Sport.

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.

Polaris 9550 Sport

Will the Polaris 9550 Sport work in your pool?

The full spec sheet.

Living with it.

How the assessment has moved.

What people actually ask.

Other robot pool cleaners we have classified.

Maytronics Dolphin Nautilus CC Pro

Maytronics Dolphin Nautilus Titan

Ecovacs Ultramarine P1

Wybot C2

Where it's sold

Reference the Polaris 9550 Sport classification.

Three ways to keep going.

Get the next reassessment.

Compare with a peer.

See every Level II.