Part of the Dolphin ProLine™ lineup · compare all 3 models
Dolphin Quantum Robotic Pool Cleaner — Certified Open Box
- Certified Open Box: like-new condition, Maytronics-software verified
- Full 2-year warranty coverage starting on your delivery date
- Roomy top-load XXL MaxBin™ + NanoFilter™ ultra-fine panels included
- PowerJet 3D™ waterline scrubbing & 60-ft 360° anti-tangle swivel cord
- Weekly Smart Timer + myDolphin™ Plus scheduling for pools up to 50 ft
or as low as $127.42/mo with
Make storage easier:
Dolphin Universal Caddy
$145
Why pool owners add the Universal Caddy
- Effortless Roll-to-Pool Transport – Wheel your Dolphin smoothly from patio or garage to poolside without heavy lifting
- Protects Scrubbing Brushes – Cradles the cleaner off the ground so active brushes never develop flat spots in storage
- Integrated Power Supply Mount – Locks your power supply upright off wet decks and neatly coils up to 60 ft of swivel cable
- Genuine Maytronics Fit – Engineered specifically by Maytronics to cradle residential Dolphin robotic pool cleaners
Dolphin Premium Caddy Cover
$99
Why add the Premium Caddy Cover
- All-Season UV & Rain Shield – Heavy-duty woven polyester protects plastics, tracks, and cables from harsh sun and storms
- Shields Power Supply Electronics – Keeps your caddy-mounted power supply dry, shaded, and free of dust and pollen
- Ventilated, Wind-Secure Fit – Built-in side vents prevent trapped humidity while bottom velcro straps hold firm in high winds
- Roll Without Removing – Integrated top handle slot lets you wheel your covered caddy straight into storage
*Rates from 0% APR. Subject to eligibility check. See payment terms.
Like-New Dolphin Quantum Performance—With Instant Savings
Diagnostic-Verified Like New
Inspected using Maytronics diagnostic software and verified complete with XXL MaxBin™, NanoFilters™, and smart power supply.
Full 2-Year Warranty
Carries the exact same 2-year warranty duration as a factory-sealed Quantum, starting the day your box arrives.
Roomy top-load XXL MaxBin™
Lift from the top, unclip SnapLoc™ panels, and rinse leaves, sand, and 2-micron silt in under a minute.
PowerJet 3D™ Waterline Grip
Vectored water jets hold vertical walls and glide laterally across the tile line to remove scum buildup.
60-Ft Anti-Tangle Swivel
Patented 360° swivel prevents twisted cords across inground pools up to 50 feet.
Weekly Timer Scheduling
Automate cleanings daily, every 2nd day, or every 3rd day at roughly 5 cents of electricity per run.
ProLine™ Power at the Right Price
The Dolphin Quantum pairs a roomy top-load XXL MaxBin™ basket, NanoFilter™ pleated panels, PowerJet 3D™ waterline mobility, and SmartNav 2.0™ scanning—delivering flagship inground cleaning while cutting energy use by up to 87% compared to booster-pump cleaners.
PowerJet 3D™ Lateral Waterline Scrubbing
Multi-directional water-jet thrust holds the Quantum tightly against vertical pool walls and propels it laterally along the tile line—scrubbing away stubborn oils, sunscreen buildup, and algae instead of slipping back down to the floor.
Roomy XXL MaxBin™ with SnapLoc™ Access
Lift the oversized top-load MaxBin™ out with one hand—no flipping the robot upside down. All four SnapLoc™ sides unclip and the hinged bottom drops open so leaves, acorns, sand, and ultra-fine NanoFilter™ silt rinse away cleanly in seconds.
HyperBrush™ 2× Speed Active Scrubbing
Spinning at twice the speed of the cleaner's travel rate, the Quantum's active HyperBrush™ system agitates plaster, pebble, tile, fiberglass, and vinyl surfaces to break loose clung-on algae and fine dust before vacuuming it into the MaxBin™.
SmartNav 2.0™ Systematic Coverage
SmartNav 2.0™ maps your pool's geometry to clean floor, walls, and waterline in a crisp 2-hour cycle without getting hung up on main drains, corners, or sloped transitions—assisted by a 60-foot anti-tangle swivel cable.
Smart Scheduling on the Power Supply or App
Use the Weekly Smart Timer on the power supply or the myDolphin™ Plus app to run your Quantum every day, every other day, or every third day.
Fast-Drain Ergonomic Handling & 2-Year Warranty
Front-balanced carry geometry and rapid water-release vents drain pool water immediately as you lift the Quantum over the coping—backed by a 2-year Maytronics warranty and our 30-day return policy.
"Rated the Best Value ProLine Robotic Pool Cleaner"
"NanoFilters, the massive XXL MaxBin, waterline scrubbing, and a Weekly Timer combine to make the Dolphin Quantum the best value ProLine cleaner we've tested." — Kelly E., PoolPad
Read PoolPad's Dolphin Quantum ReviewIndependent Hands-On Reviews
Inspected, Complete & Fully Covered
Every Certified Open Box Dolphin Quantum undergoes multi-point Maytronics software diagnostics to make sure 100% motor, sensor, jet, and power-supply health. It ships complete with the roomy XXL MaxBin™, NanoFilter™ ultra-fine panels, standard mesh panels, 60-ft swivel cable, and a full 2-year warranty starting on delivery.
Want even bigger savings? Compare our Certified Refurbished Dolphin Quantum or view the Factory-New Dolphin Quantum.
Dolphin Quantum (Open Box) Specs
Dolphin Quantum (Open Box) FAQ
Does the Open Box Quantum include NanoFilters?
Yes—both the ultra-fine pleated NanoFilter™ panels and standard mesh panels come inside the box with the XXL MaxBin™.
Does it still get the full 2-year warranty?
Yes, your 2-year warranty starts on the date of delivery when purchased from Pool Robots.
Can I return an Open Box Quantum within 30 days?
Yes—eligible open-box cleaners qualify for our 30-day return window.
We’re Here Long After Delivery Day
2-Year Warranty (Starts on Delivery)
Maytronics-diagnostic inspected and backed by a full 2-year warranty starting on your delivery date. See the full warranty.
30-Day Returns
If it isn’t right for your pool, start a return within 30 days.
Fast, Free Shipping
Your cleaner ships fast and free on qualifying orders, ready for its first run.
Let the robot clean the pool. Let ICO watch the water.
ICO tests your water every hour and tells you exactly what to add—before cloudy water or algae ruins the weekend.
- Measures pH, ORP, and water temperature every hour
- Exact chemical amounts in the free iOS & Android app
- Warns you before heat or rain knocks the water out of balance
- Versions for chlorine/bromine and salt water pools (salt also tracks TDS)
ICO - The Smart Pool Water Monitor
Hourly water readings and exact dosing help—without another subscription.
Which type of pool do you have?
Complete Your Setup
Make poolside transport effortless and shield your cleaner and power supply between cycles.
How the Dolphin Quantum (Open Box) Stacks Up
See what spending more—or less—changes in pool size, filtration, warranty, and everyday convenience.
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|---|---|---|---|---|---|
| Best for | Best all-around inground pick | Best value wall-climber | Best all-around inground pick | Premium clean without the UV price | Cleaner, sanitised water |
| Cleaning coverage | Floor, walls & waterline | Floor, walls & waterline | Floor, walls & waterline | Floor, walls & waterline | Floor, walls & waterline |
| Filtration | XXL MaxBin™ top-load + NanoFilters™ | MaxBin™ top-load basket (NanoFilter™-ready) | XXL MaxBin™ top-load + NanoFilters™ | UltraFilter™ (1μm / 180μm) | UltraFilter™ (1μm / 180μm) |
| Warranty | 2 years | 2 years | 2 years | 3 years | 3 years |
| Climbs walls | |||||
| Scrubs waterline | |||||
| Ultra-fine filtration | — | ||||
| Wi-Fi + app control | — | ||||
| UV water clarifier | — | — | — | — |
Specs are based on manufacturer data; prices can change. Build your own comparison →
*Rates from 0% APR or 10–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers: affirm.com/licenses.