Maytronics
Maytronics Dolphin EON 120d
- Autonomy
- III Conditional Autonomy
- Score
- 71/100 Strong
- Readiness
- Promising Progress
- Price
- $1,199confirmed
Comparison · 2 robots
Maytronics Dolphin EON 120d · Pentair Prowler 930W
All robot pool cleaners. Every measure below is plotted against the full class, so a difference can be read against how much the class itself varies.
- Maytronics Dolphin EON 120d
- Pentair Prowler 930W
Pentair
Pentair Prowler 930W
- Autonomy
- III Conditional Autonomy
- Score
- Not scored
- Readiness
- Ready Now
- Price
- $937.29confirmed
Up to three
01 Classification
What each one does on its own.
The Autonomy Ladder is the same five rungs for every robot on the site. A rung describes the conditions a robot handles without you, not how good it is.
V
Generalized
Any task, any setting
IV
Environmental
Handles new obstacles without help
III
Conditional
Finishes familiar jobs on its own
Maytronics Dolphin EON 120dPentair Prowler 930W
II
Assisted
Runs preset routines, needs rescue
I
Manual
One action, on command
02 Assessment
Where they actually differ.
The Robovations Score is nine inputs across three pillars, each weighted as shown and each scored so that more is better. A robot can lead on one and trail on another, which is the point of showing them apart. Cost of ownership and data handling are reported on each robot's own page and are never averaged into the score.
Capability
Task completion16% of score
Does it finish the job it is sold to do, unattended
75
- Maytronics Dolphin EON 120d75
18median 72 across 354 scored robots100
Not scored: Pentair Prowler 930W
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
70
- Maytronics Dolphin EON 120d70
15median 70 across 344 scored robots100
Not scored: Pentair Prowler 930W
Edge-case recovery10% of score
Does it recover from the failures its category presents
50
- Maytronics Dolphin EON 120d50
18median 50 across 261 scored robots100
Not scored: Pentair Prowler 930W
Operating envelope4% of score
How far conditions can vary before performance drops
100
- Maytronics Dolphin EON 120d100
25median 70 across 320 scored robots100
Not scored: Pentair Prowler 930W
Dependability
Field failure rate16% of score
Documented hardware failures per owner-year
56
- Maytronics Dolphin EON 120d56
6median 70 across 344 scored robots100
Not scored: Pentair Prowler 930W
Software stability14% of score
Whether updates fix more than they break
65
- Maytronics Dolphin EON 120d65
15median 65 across 275 scored robots100
Not scored: Pentair Prowler 930W
Support longevity10% of score
Committed parts, service and updates, with dates
79
- Maytronics Dolphin EON 120d79
0median 63 across 354 scored robots100
Not scored: Pentair Prowler 930W
Ownership burden
Routine maintenance12% of score
Hands-on time it asks for in normal operation
84
- Maytronics Dolphin EON 120d84
22median 68 across 355 scored robots100
Not scored: Pentair Prowler 930W
Consumables8% of score
Parts that must be bought to keep it working
69
- Maytronics Dolphin EON 120d69
30median 69 across 354 scored robots100
Not scored: Pentair Prowler 930W
03 Measured against the class
How far apart is a long way?
A number only means something next to the spread it sits in. Each track below is the real range across every classified robot in the class, with the median marked.
Price62 with a published figure
$1,199$937.29
- Maytronics Dolphin EON 120d$1,199
- Pentair Prowler 930W$937.29
$249median $1,194$4,250
Not compared, because fewer than two of these robots carry a published figure: Suction, Runtime, Charge time, Noise, Weight, Height.
04 Ownership
What the numbers leave out.
The trade-off
What each design gives up to be good at what it is good at.
Maytronics Dolphin EON 120d
DebrisLock backwashes in the water the moment the filter starts to clog, but it reduces filter handling rather than removing it: early press testing still found clearing a leaf-packed filter an awkward job.
Cordless operation removes the tether, but the run is bounded by the pack: 1.5, 2 or 2.5 hours per cycle and a lift-out to recharge, against a mains cleaner that keeps going from the outlet.
Pentair Prowler 930W
Corded power eliminates the battery but adds tether management. There is no charging dock to maintain and no runtime ceiling, but the cable becomes a season-long fixture that needs untangling before a run, and the cleaner has to come out of the pool before anyone swims.
Who each one is wrong for
Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.
Maytronics Dolphin EON 120d
- Owners who want no battery routine at all
- Cordless operation means lifting the robot out to its caddy and charging it off-pool, and keeping the pack topped up through the off-season. Mains-powered cleaners run from an outlet and skip both steps.
- Pools under heavy leaf fall where nobody wants to handle the filter
- DebrisLock backwashes in the water and cuts how often the filter needs service, but early press testing still found clearing a leaf-packed filter an awkward job. The work is reduced, not removed.
- Buyers who want a multi-season service record
- The EON line was introduced in January 2026. Battery longevity and long-run reliability data for this generation does not exist yet.
Pentair Prowler 930W
- Pools farther than 60 feet from a power outlet
- The cable is 60 feet, about 18.3 metres, and that is the whole working radius. The power supply must sit within reach of a GFCI-protected outlet; an extension cord is not a workaround on a mains-powered cleaner.
- Owners prioritizing hands-off operation
- Requires rinsing the filtration basket after runs, seasonal brush and track inspection, and winterization. The cleaner also has to come out of the pool before anyone swims. Not a set-it-and-forget-it system.
- Homes with 5 GHz-only WiFi or poor signal
- App-based scheduling depends on reliable 2.4 GHz WiFi. Weak coverage leads to connection drops and delayed operation.
What stays your job
The upkeep ownership hands back to you, whatever the autonomy level says.
Maytronics Dolphin EON 120d
- Weekly: Lift the robot out, open the filter compartment, empty it and rinse with a hose. Maytronics states DebrisLock’s in-water backwash moves this from a daily job to a weekly one, though heavy leaf fall shortens the interval.
- Monthly: Brush wear check; replace bristles if splayed.
- Every 3-6 months: Deep rinse the filter assembly.
- Seasonally: Store the battery charged, not drained, and top it up periodically through the off-season; keep the robot and charger in a dry location.
Pentair Prowler 930W
- Every use: Remove the cleaner and its cable from the pool before anyone enters the water; inspect the cable for damage and tangles.
- After each run: Rinse the top filtration basket with hose water; inspect drive tracks and brushes.
- Monthly: Check cable swivel connector for corrosion.
- Seasonally: Inspect brush bristles for wear; winterize motor and cable connections; drain and store upright.
- Annually: Full cable and connector inspection per the manual.
05 Evidence
How much each of these is standing on.
Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.
| Robot | Evidence status | Sources reviewed | Last assessed |
|---|---|---|---|
| Maytronics Dolphin EON 120d | Verified | 5 | Aug 2026 |
| Pentair Prowler 930W | Discontinued | 7 | Aug 2026 |
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