Part of the Dolphin ProLine™ lineup · compare all 3 models
Dolphin Quantum Robotic Pool Cleaner — Certified Refurbished
- Low-hour Certified Refurbished (<10 motor hours) — save up to $230
- Full 2-year warranty starting on your delivery date
- Choose Excellent, Good, or Fair cosmetic grade — identical cleaning power
- Includes roomy top-load XXL MaxBin™ + NanoFilter™ pleated panels
- PowerJet 3D™ waterline scrubbing & 60-ft 360° anti-tangle swivel cord
or as low as $125.75/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.
ProLine™ Top-Load Performance at Mid-Tier Pricing
Under 10 Hours on the Motors
Refurbished Quantum units come from brief 30-day trials with under 10 logged hours and pass full Maytronics software diagnostics.
Full 2-Year Warranty
Protected for two full years from your delivery date—the same warranty length as a brand-new Quantum.
Three Honest Cosmetic Grades
Pick Excellent, Good, or Fair based on exterior shell marks while getting 100% certified suction and climbing.
XXL MaxBin™ + NanoFilters™
Extra-large top-load basket with SnapLoc™ panels traps leaves and microscopic silt alike.
PowerJet 3D™ Waterline Clean
Scrubs floor, vertical walls, and tile line across inground pools up to 50 feet.
60-Ft Swivel + Weekly Timer
Tangle-free 360° cable swivel and automated weekly timer scheduling included.
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
Why Buy a Mid-Tier Robot When You Can Own a ProLine™ Quantum?
Every Certified Refurbished Dolphin Quantum logs fewer than 10 motor hours, passes Maytronics diagnostic software testing, and ships complete with the roomy XXL MaxBin™, NanoFilter™ set, standard mesh panels, 60-ft swivel cord, and Weekly Smart Timer power supply—backed by a full 2-year warranty.
- Excellent: Near-new exterior appearance with minimal handling marks.
- Good: Minor scuffs on plastic bumpers from brief pool testing; 100% mechanical spec.
- Fair: Visible cosmetic scratches on the shell—maximum savings with zero difference in cleaning or warranty.
Dolphin Quantum (Refurbished) Specs
Dolphin Quantum (Refurbished) FAQ
How many hours have been put on Refurbished Quantum units?
Each Certified Refurbished Quantum has fewer than 10 hours logged on its motors—verified via Maytronics diagnostic software before shipping.
Do all three cosmetic grades carry the 2-year warranty?
Yes—Excellent, Good, and Fair grades all include the same 2-year warranty starting on delivery day plus 30-day returns.
Are both filter sets included?
Yes, you receive the XXL MaxBin™ basket with both NanoFilter™ ultra-fine panels and standard mesh panels.
We’re Here Long After Delivery Day
2-Year Warranty (Starts on Delivery)
Low-hour units (<10 motor hours) tested with Maytronics diagnostics and backed by a full 2-year warranty from delivery. See warranty details.
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 (Refurbished) 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.