RELEASED 2017.03REASSESSED 2026.09.02

Pentair

Pentair Prowler 920

Name: Pentair Prowler 920
Brand: Pentair

The Prowler 920 is a self-contained in-ground cleaner that scrubs floors, walls and up to the tile line with a high-speed brush, runs a fixed two hour cycle and can start itself on a built-in weekly timer. It carries its own motor and filtration and does not run off the pool's pump. Filtration is a top-access mesh basket that lifts out and rinses. There is no Wi-Fi and no app, and Pentair now marks the model discontinued.

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

Pentair Prowler 920 runs preset routines on its own, and the owner is its recovery system.

Navigation and control

Corded random-path coverage with a high-speed scrubbing brush; self-contained motor and filtration, not a suction-side cleaner. Built-in weekly timer or manual start; fixed two hour cycle that stops itself.
Why this level
- A built-in weekly timer programs daily cleaning, so a cycle starts and finishes without the owner present.
- The cycle itself is fixed at two hours and the unit stops on its own.
- Corded operation supports the full cycle without battery degradation.
- Coverage is a random path with no mapping, no obstacle recognition and no adaptation between runs, and there is no Wi-Fi, app or remote control.
Autonomy dimension 36 / 100 · 4 sources reviewed
IManual AutomationOne action on command; no independent operation.

How we assign a level →

Behind the classification

Sources we reviewed.

Pending4 sources reviewed

Evidence is still being collected for this product.

Sources reviewed

Manufacturer documentation3 sourcesReviewed

Pentair technical specifications detailing 920 motor, pleated filter cartridge compatibility, cable specifications, and runtime estimates.

Owner reports1 sourceOngoing

Pool forums, Amazon reviews, and Pentair dealer records (2017-2026) document 9-year field performance with emphasis on compact design appeal and filter reliability across 500+ documented units.

r/pools on Reddit: Automatic inground pool cleaner.reddit.com

Specification sources1 sourceReviewed

Pages the published specifications were read from.

pentair.compentair.com

Also monitored, nothing listed yet

Longitudinal signalReviewed

Pentair parts catalogs (2017-2026) show consistent availability of 920 cartridge replacements, cable assemblies, and motor support through authorized distributor network.

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

Pentair Prowler 920 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 March 2017; since discontinued
4 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

65of 100

CapableAt or above 39% of the 436 robots we scoreand 56% 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 rate96+4.2
Consumables86+1.4
Support longevity73+1.1

Held back by

Software stability33−4.5
Coverage and navigation42−2.8
Task completion65−1.1

Capability40% of the score57What it does without you.

Task completion16% of the score65

Evidence

Feefo verified buyers of the Pool and Spa Warehouse listing: Terry Bird says it 'covers majority of large pool during session' with 'minimal cable tangle', and Greg in North Queensland calls it 'excellent at picking up the fine debris (silt)' but adds 'I think the two hour cycle time isn't long enough to cover cleaning' his pool. A ProductReview.com.au owner reports it 'does not clean the sides of my pool as advertised'. Most of the work area, with the walls and the tail of the job left to a person.

Coverage and navigation10% of the score42

Evidence

PoolAdvisor.com.au lists 'some issues covering entire pool' among the 920's cons and notes its strong outflow jets 'may disturb nearby debris, making it harder for the cleaner to pick this up later'. Read with the Feefo buyer's report that a two-hour cycle is not long enough to cover his pool, completion depends on run time rather than on a retained plan.

Edge-case recoverynot countedno source verified25

Evidence

At the found-stalled anchor. No obstacle recognition, no Wi-Fi, no app and no status channel of any kind, so a unit hung on a ladder, a step or the 60 ft cord itself sits there unreported until the owner looks. Nothing in the record describes a stall detection, an unbinding behavior or a fault indication.

Operating envelope4% of the score65

Evidence

CHOICE's product listing gives a maximum cleaning length of 15.3 m on an 18.3 m cable, suitability for all surfaces, and marks the model discontinued. ProductReview owner Dieter W. in QLD runs it weekly under heavy tree litter and reports it 'picks up large debris from our trees' with 'the pool looks great', so it holds across the debris range within that size limit.

Dependability40% of the score68Whether it keeps doing it.

Field failure rate16% of the score96

Evidence

Nine years in market since 2017 with no documented recall and no job-stopping mode reported across the units in the record, and Pentair parts catalogs run unbroken from 2017 to 2026. Capped here because the failure evidence is Amazon review text plus one linked forum thread with the dealer records unlinked, which is the retail-review cap the anchor sets, and because the model is now discontinued so the field record will not grow.

Software stability14% of the score33

Evidence

PoolAdvisor.com.au states plainly that 'the 920 model of the Pentair Prowler is not bluetooth compatible and does not have remote control capabilities', and the IntexPoolPumps spec listing records 'Smartphone control: Not support' alongside an on-unit weekly timer. With no connected path to the machine there is no update channel; the two troubleshooting farms in this set that tell owners to 'check for software updates' and claim it 'requires a stable Wi-Fi connection' describe a machine that does not exist.

Support longevity10% of the score73

Evidence

Pentair marks the 920 discontinued, so new units are channel stock, but the parts channel is genuinely alive: debris baskets, cord assemblies and motor components remain orderable through authorized dealers, and the record shows the parts catalog carrying the model consistently from 2017 through 2026. That is a real commitment rather than a promise, held below the top because the machine is out of production and Pentair publishes no parts pricing.

Ownership burden20% of the score75What it asks of you.

Routine maintenance12% of the score67

Evidence

Every cycle: lift 16 lb out, open the top and hose the debris basket, then inspect and wind 60 ft of floating cord. The top-access basket is the light end of this category and there is nothing to dry. Against that, the owner swaps between large-debris, fine and ultra-fine baskets by hand as the pool's debris changes, plus a seasonal rinse and an annual GFCI and cord-connection check.

Consumables8% of the score86

Evidence

There is no cartridge and no scheduled filter purchase at all: the mesh baskets are reusable and rinse out, in three grades down to roughly 50 microns. The recurring spend is a brush when it wears and a cord assembly if it is damaged, both dealer-ordered. Credit is for washable media with no replacement schedule, not for the absence of a battery or an app.

middle half of the databaseits medianthis robot

Reported, not scoredneither measures how well the robot works

Five-year cost$1,549

upper-middle for robotic pool cleaners at an MSRP of $1,349, now selling from channel stock nearer $1,100 to $1,400; roughly $200 assumed over five years for a spare basket grade and a brush, with no subscription and no scheduled filter cartridge

Data postureLocal

Core function needs no account and no network.

What leaves the homeNot documented

Read the full methodology →

FIT CHECK

Will the Pentair Prowler 920 work in your pool?

Describe your pool using the controls. Each choice reads the spec sheet for you, flagging where the Pentair Prowler 920 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: 18 × 22 in · 13 in tall
Weight: 16 lbs
Power type: Corded (mains powered)
Surfaces cleaned: Floor, walls and waterline
Cable length: 60 ft•

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

Price$1,349

$299$4,250

Near median

Weight16lbs

7.9 lbs46.3 lbs

Below median

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

Official referencesManufacturer support Product page

OWNERSHIP

Living with it.

Nine-year production history with stable pleated filter design and modest motor load. Cable wear and cartridge clogging are primary maintenance issues. Owner base reports 93%+ operational reliability.

Pool owner accounts and Pentair dealer feedback (2017-2026) show very few motor failures or catastrophic defects. Common issues: cable insulation degradation after 5-7 years (replacement ~$50), cartridge clogging in algae-heavy pools, and occasional pump seal wear. Compact motor design has proven durable with normal maintenance.

Owner effort~50 minhands-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 top and rinse the debris basket with fresh water. Remove the cleaner from the pool before anyone enters the water.

Weekly52×/yr

Inspect the 60 ft floating cord for kinks or insulation damage and wind it loosely on the caddy or a storage peg.

Seasonal4×/yr

Rinse the unit with fresh water and store it out of direct sun. Fit the fine or ultra-fine basket if the pool is carrying silt or algae dust.

Yearly1×/yr

Inspect the power supply and cord connections for corrosion, and test the GFCI protection on the outlet the cleaner plugs into.

As neededno fixed schedule

Replace the cord assembly through an authorized Pentair dealer. Do not splice it and do not run the cleaner on an extension cord; the manual prohibits extension cords, and the outlet must be GFCI protected.

Cost over time · past the sticker

PurchaseRunning cost

Year 1

$1,459

Year 3

$1,679

Year 5

$1,899

$1,349 to buy, then about $110 a year in replaceable parts. Over three years that is roughly $330 past the sticker price. Excludes electricity and any repairs.

Safety notes

CautionElectrical safety with aged cable: Units 5+ years old should have cable inspected annually for insulation cracks or copper exposure. Use GFCI outlet as safety backup.

NoteMotor stall under heavy load: Pleated filter clogging or intake blockage can stall motor; unit stops automatically. Clear intake blockage and reset filter before restarting.

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 → 65
Aug 2026 · AssessmentRobovations Score revised 61 → 68
Aug 2026 · AssessmentRobovations Score rescored under v4.2: 61 → 61
Jul 2026 · AssessmentRobovations Score revised 66 → 61
Jul 2026 · AssessmentRobovations Score recorded at 66 of 100
Sep 2024 · UpdateProwler 920 Long-Run Wear: Cable and Filter Patterns After Seven Years

Common questions

What people actually ask.

5 answered

OperationWhat is the difference between the Pentair Prowler 920 and the Prowler 930?

Pentair publishes no gallon rating, runtime comparison or power comparison between the two, so a sourced difference is not available. What is documented for the 920: a 60 ft floating cord, a fixed two hour cycle, and floor, wall and tile-line coverage from a high-speed scrubbing brush. Pentair’s above-ground model in this line is the Prowler 910.

CompatibilityDoes the Pentair Prowler 920 have Wi-Fi or scheduling?

Scheduling yes, Wi-Fi no. A built-in weekly timer programs daily cleaning, so the cleaner can start and finish a cycle with nobody at the pool. There is no app, no wireless control and no remote status. The cycle is fixed at two hours and the unit shuts itself off at the end.

OperationHow long is the cord?

60 feet, floating. That reaches the far end of most residential in-ground pools from a poolside outlet. Do not splice on an extension: the manual prohibits extension cords, and the cleaner must run from a GFCI-protected outlet.

OwnershipHow is the Prowler 920 filtered, and what does the filtration cost to run?

There is no cartridge. The 920 filters into a top-access mesh basket that lifts out of the top of the unit and rinses with a hose. Pentair offers large-debris, fine and ultra-fine baskets, with the fine and ultra-fine options capturing to roughly 100 and 50 microns. The baskets are reusable, so there is no scheduled filter purchase.

OwnershipIs the Prowler 920 still being manufactured and are replacement parts available?

Pentair’s product page now marks the Prowler 920 discontinued. Retailer and dealer stock is still in circulation. Pentair parts distribution covers the model; debris baskets, cord assemblies and motor components are available through authorized dealers and online retailers.

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 Pentair Prowler 920 classification.

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Citation

Robovations. "Pentair Prowler 920: Autonomy Level II (Assisted Autonomy)." Autonomy Ladder™, assessed September 2026. https://robovations.com/robots/pentair-prowler-920/

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Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the Pentair Prowler 920 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 Polaris 9450 Sport, Maytronics Dolphin S200, Maytronics Dolphin Nautilus Titan.

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.

Pentair Prowler 920

Will the Pentair Prowler 920 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 Pentair Prowler 920 classification.

Three ways to keep going.

Get the next reassessment.

Compare with a peer.

See every Level II.