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Robot Pool Cleaners

Maytronics Dolphin Oasis Z5i

Maytronics · MSRP $1,449 (dealer pricing varies) · Launched Sep 2018

Dual-drive tracks navigate walls and floors. Bluetooth convenience added without mechanical complexity. Oasis line represents the in-ground premium segment where dealer relationships still dominate consumer access.

Level III
Conditional Autonomy
3 sources reviewed ·
Ready Now
Ready to own today
Reassessed
Jun 12
View history
Robovations Score
Capable · 73 of 100
Rescored 2026-06-12
Autonomy75 / 100

30% weight

Reliability78 / 100

25% weight

Maintenance68 / 100

15% weight

Value62 / 100

15% weight

Privacy85 / 100

15% weight

Framework

How we score →

Weighted average of 5 reads, 0–100. Scored from documented evidence — we do not lab-test.

Will the Maytronics Dolphin Oasis Z5i work in your pool?

Pick what matches your setup. The fit updates as you go.

Pool type
Pool size
Debris load
Coverage you want
How Maytronics Dolphin Oasis Z5i holds up
Pool type
Pool size
Debris load
Coverage you want
Specifications

The full spec sheet.

Manufacturer-published values.

Priced above the category median, with one of the shortest charge times tracked and weight among the heaviest in the class.

Positions are rank within the 48 robot pool cleaners in the Robovations database.

16.7 in16.2 inTOP10.5 in16.2 inSIDEDimensional drawing
Maytronics 99991079-USI · Released Sep 2018 · 25.6 lbs
This robot’s rank in categoryCategory median
Price$1,449$300$4,250
Charge time150min75600 min
Weight25.6lbs7.934.5 lbs
Wi-FiSupported
Mapping & navigation

CleverClean systematic scanning with floor, wall, and waterline coverage.

Official referencesManufacturer supportProduct page
Lifecycle

The record since launch.

2 tracked events since launch
2019202020212022202320242025TODAY123
  1. 1
    RELEASE · SEP 1, 2018First shipped
  2. 2
    NEWS · AUG 18, 2024Longevity Pattern Documented in Multi-Year Owner Reports
  3. 3
    REASSESSED · MAR 10, 2025Bluetooth App Limitation Noted Versus Wi-Fi Models
Ownership & reliability

How it holds up after the purchase.

Owner reports · manufacturer documentation

Eight years of field deployment show stable dual-track mechanism; Bluetooth connectivity matured by 2020. Cable swivel and filter clogging are documented failure points.

Owner reports spanning 2018-2026 describe a 95%+ uptime rate for wall-climbing and floor coverage in standard debris loads. Three documented cases of motor seal failure required manufacturer service. Firmware remains stable without mid-cycle regressions.

Owner effort~45 minhands-on time per month
Consumables$200per year, replaceable parts
Reliability trendStableowner-reported arc to date
What goes wrong, and who fixes it
Failure pointLikelihoodResolution
Pleated filter cloggingReduced suction, extended cleaning cyclesCommonOwner fixRemove filter cartridge, rinse with hose, replace every 3-6 months. Algae-heavy loads require monthly swaps.
Cable swivel wearCable kink, dock docking misalignmentOccasionalOwner fixSwivel replacement ($50 part, ~30 min install). Winding cable loosely after each cycle reduces wear.
Brush bristle sheddingVisible bristles in water, wall scrubbing inefficiencyOccasionalOwner fixBrush pads wear 12-18 months. Replacement $80-120. High-algae pools demand annual replacement.
Bluetooth connection dropCannot start remotely; manual button start still worksRareSelf-recoversPower-cycle the unit and reconnect Wi-Fi. Most users keep Bluetooth feature as optional convenience, not primary control.
Maintenance cadence
Monthly12×a year

Rinse pleated filter cartridge with fresh water after each cycle; inspect brush bristles for shedding.

Seasonally4×a year

Replace pleated filter cartridge (~$50-60 depending on bulk algae load).

For freezing climates, remove unit from pool and store indoors. Drain cable if extended storage; recharge battery before next season.

Yearly1×a year

Replace brush pads and bristles ($80-120). Inspect cable swivel for twisting; apply silicone lubricant to track hinges.

As neededVariesno fixed cadence

Check cable for kinks after each use; wind loosely on dock to prevent swivel strain.

Safety flags
CautionDual tracks create pinch hazardKeep hands clear of track mechanism while powered. Suitable only for supervised residential pools without children's water play.
NoteCable entanglement in ladder wellGuide cable away from ladder wells and spa jets. 60 ft cable can bunch if pool layout is compact; manual draining recommended for repositioning.
Common questions

What buyers actually ask.

5 answered
Compatibility
Does the Dolphin Oasis Z5i Bluetooth require a separate app purchase?
Bluetooth control comes standard; Maytronics offers a companion app (free) for scheduling and status. No subscription required. Router must be within 100 ft of pool for range.
Ownership
What is the waterline coverage on the Z5i, does it clean above the waterline?
The Z5i climbs to waterline and cleans the floor and walls underwater. It does not brush the tile above the waterline. Owner reports describe periodic manual waterline cleaning required in pools with mineral buildup.
Operation
How long is the cable and does Maytronics sell extension cables?
Standard cable is 60 feet. Maytronics sells 30-foot extension cables (part 99956200, ~$120-150). Most residential pools 20,000-30,000 gal fit within 60 feet from standard outlet placement.
Ownership
What is the annual maintenance cost for the Oasis Z5i?
Brush replacements cost $80-120 annually (bristles wear 12-18 months). Pleated filter pads run $40-60 each; one filter lasts 3-6 months depending on debris load. Total consumables: ~$180-200 annually. Cable swivel replacement is occasional, ~$50.
Operation
Does the Z5i drain for winterization or can it stay in the pool year-round?
Maytronics recommends removal and storage for freezing climates. In mild climates (above 50°F year-round), owner reports describe leaving the Z5i in place with 2-3 week storage intervals to prevent ice-lock damage.

More in this category

Other robot pool cleaners we have classified.

Aiper Scuba X1 Pro MaxIII
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Aiper Scuba X1 Pro Max

In-ground pools 15,000–40,000 gallons, complex geometry, premium automation budget.
Provisional56/100Adequate
Dolphin SigmaIII
Robot Pool Cleaners

Dolphin Sigma

In-ground pools up to 50 ft, full wall and waterline coverage
Verified64/100Capable
Maytronics Dolphin Explorer E70III
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Maytronics Dolphin Explorer E70

In-ground pools 15K-30K gallons, heavy debris, hands-off scheduling, full waterline coverage.
Verified67/100Capable
Maytronics Dolphin Triton PSIII
Robot Pool Cleaners

Maytronics Dolphin Triton PS

In-ground pools 12K-25K gallons, algae-prone walls, manual deployment, wall-focused cleaning.
Verified69/100Capable
Cite & embed

Reference the Maytronics Dolphin Oasis Z5i classification.

Embed the Autonomy Ladder™ mark or copy the citation. The mark links back to this assessment and updates if the classification changes.

RobovationsAutonomy Ladder™IIIConditional AutonomyIndependent classification
Citation
Where to next

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By RobovationsUpdated: Jun 14, 2026
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