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A robot pool cleaner is a self-contained, battery or mains powered vacuum that drives around the floor (and often the walls and waterline) of your pool, scrubs with brushes and traps debris in its own filter. Unlike older suction or pressure cleaners, it does not rely on your pool pump, so it can lower running costs and takes load off your main filter.
The market has split into two camps. Long-established brands such as Dolphin (made by Maytronics) and Polaris (part of Fluidra) still sell mostly corded robots that plug into a power supply by the poolside. Newer brands such as Beatbot and Aiper sell cordless robots with lithium batteries, smart navigation and app control. This page compares the best of both, then points you to deeper guides.
Not sure where to start? Read our best cordless robot pool cleaners if you want no cable at all, best robot pool cleaners for above-ground pools for smaller pools, or the brand reviews for Dolphin, Polaris, Beatbot and Aiper.
Robot pool cleaners compared| Model | Price (Oct 2026) | Power | Cleans | Best for |
|---|
| Dolphin Nautilus CC Plus | around $849 | Corded | Floor, walls | Most in-ground pools |
| Dolphin Nautilus EON 100 | around $899 | Cordless | Floor, walls, waterline, ledges | Pools with shallow shelves |
| Dolphin Premier | around $2,499 | Corded | Floor, walls, waterline | Heavy leaf fall |
| Polaris ALPHA iQ+ | check retailer | Corded | Floor, walls, waterline | App control |
| Beatbot Sora 70 | around $1,199 | Cordless | Surface, floor, walls, waterline | Floating debris |
| Aiper Scuba S1 | around $529 | Cordless | Floor, walls | Budget, simple pools |
| Dolphin Escape | around $799 | Corded | Floor, lower walls | Above-ground pools |
In depth: every pick
Best overall
1. Dolphin Nautilus CC Plus
Best for: Most in-ground pools up to 50 ft that need floor and wall cleaning
- Price
- around $849 list, often discounted (Oct 2026)
- Power
- Corded
- Pool size
- Up to 50 ft
- Cleans
- Floor and walls
- Filtration
- Dual top-load filters
- Warranty
- 1 year (per retailer listings)
Pros
- Corded power means suction stays constant for the whole cycle
- Top-loading filters are easy to empty without flipping the robot
- Named best overall by Bob Vila after month-long testing in 2026
- Huge spare parts and dealer network
Cons
- Does not scrub the waterline
- App control only on some versions
- Shorter warranty than Dolphin's Cayman or Premier
Verdict: The Nautilus CC Plus is the safe, sensible choice. It does the core job of cleaning the floor and walls well, with no battery to charge and no robot to fish out after every run. If you want waterline scrubbing, step up to the Dolphin Cayman or Nautilus CC Pro.
Best cordless
2. Dolphin Nautilus EON 100
Best for: Pools with tanning ledges and owners who want no cable
- Price
- around $899 list (Oct 2026)
- Power
- Cordless (battery)
- Pool size
- Up to 50 ft
- Cleans
- Floor, walls, waterline, steps and shelves
- Filtration
- Sealed 70-micron cartridge
- Shallow water
- Works in as little as 8 inches
Pros
- Cleans shallow ledges and steps that most robots skip
- Scheduler spreads one charge across several shorter cleans
- Finer filter than many cordless rivals
- Backed by Dolphin's dealer network
Cons
- You still lift it out and recharge it
- App only connects when the robot is out of the water
- 1-year warranty on the standard retail version
Verdict: The EON 100 is the most practical cordless robot from a heritage pool brand. Its shallow-water ability is genuinely useful for modern pools with Baja shelves. See our cordless guide for alternatives.
Best for heavy debris
3. Dolphin Premier
Best for: Large pools under trees with lots of leaves
- Price
- around $2,499 list (Oct 2026)
- Power
- Corded, 60 ft anti-tangle swivel cable
- Pool size
- Up to 50 ft
- Cleans
- Floor, walls and waterline
- Filtration
- Four swappable options incl. leaf bag and ultra-fine filters
- Warranty
- 3 years
Pros
- Choice of filters for leaves or fine silt
- Built-in weekly timer so it can run on a schedule
- Anti-tangle swivel stops the cable twisting
- Long 3-year warranty
Verdict: The Premier is a workhorse for pools that collect a lot of debris. It costs a lot, but the filter choices and 3-year warranty explain why pool professionals often recommend it.
Best smart corded robot
4. Polaris ALPHA iQ+
Best for: Owners who want app scheduling and spot cleaning
- Power
- Corded, 70 ft cable with swivel
- Cleans
- Floor, walls and waterline modes
- Filtration
- 5 L illuminated canister with full indicator
- App
- iAquaLink: scheduling, remote spot cleaning, updates
- Extras
- Transport caddy included
Pros
- SMART Cycle works out the cleaning time from your pool's shape and size
- Canister lights up when it needs emptying
- Long 70 ft cable suits big pools
- Rated 4.7 out of 5 from 319 owner reviews on the Polaris site (Oct 2026)
Cons
- Premium price
- Check pool size limits with your dealer, as Polaris does not publish them on the product page
Verdict: If you want a corded robot with a proper app, the ALPHA iQ+ is the most complete Polaris. The illuminated canister and swivel cable are thoughtful touches.
Best all-in-one (includes surface skimming)
5. Beatbot Sora 70
Best for: Pools that collect floating leaves and insects
- Price
- around $1,199 (Beatbot store, Oct 2026)
- Power
- Cordless, 10,000 mAh
- Runtime
- Up to 5 h floor or 7 h surface (manufacturer)
- Coverage
- Up to 300 m2 / 3,229 sq ft
- Filtration
- 6 L basket, 150 micron
- Warranty
- 3 years
Pros
- Cleans the water surface as well as floor, walls and waterline
- Parks at the surface when done, so retrieval is easier
- Large 6 L basket
- 3-year warranty
Cons
- Standard filter is coarse (150 micron); finer filter sold separately
- Some independent reviewers still prefer corded robots at this price
Verdict: The Sora 70 can replace a separate skimmer, which is why Bob Vila named it best all-in-one. It is a strong buy if surface debris is your main problem.
Best value cordless
6. Aiper Scuba S1
Best for: Simple in-ground pools on a budget
- Price
- around $529 (Aiper store, Oct 2026)
- Power
- Cordless
- Cleans
- Floor and walls
- Filtration
- Dual filtration
- Warranty
- 2 years
- Navigation
- Dual-path planned navigation
Pros
- Cheapest cordless robot here that climbs walls
- Light to lift out
- 2-year warranty
Cons
- No waterline scrubbing
- Independent testers report shorter real runtimes than advertised
- Aiper has had two US fire-hazard recalls on older models (2023 and 2025)
Verdict: A fair budget choice for a simple rectangular pool. Read our Aiper review for the full safety history before you buy.
Best for above-ground pools
7. Dolphin Escape
Best for: Above-ground and small in-ground pools
- Price
- around $799 list (Oct 2026)
- Power
- Corded
- Pool size
- Up to 33 ft
- Cleans
- Floor and lower walls
- Flow
- Up to 4,000 gallons per hour (manufacturer)
- Warranty
- 2 years
Pros
- Strong, steady suction from a plug-in robot
- Large top-load filter basket
- Low running power (about 180 W)
Cons
- Does not clean the waterline
- Weekly timer costs extra
Verdict: The Escape is the above-ground pick most often recommended by pool specialists. See our above-ground guide for cheaper options.
How we chose
We have not tested these robots ourselves. Instead, we built this shortlist from four kinds of evidence:
- Manufacturer specifications from Maytronics (Dolphin), Polaris, Beatbot and Aiper product pages, checked in October 2026.
- Independent long-term testing published by specialist and mainstream reviewers, including Bob Vila (which tested 20 models for at least a month each) and The Pool Nerd (which tests in its own pools).
- Patterns in owner reviews, looking for repeated complaints such as fading suction, failed batteries or tangled cables.
- Safety records, including US Consumer Product Safety Commission (CPSC) recalls.
We then weighed price against warranty length, filtration and how much effort the robot asks of you each week.
What is a robot pool cleaner and how does it work?
A robot pool cleaner is a sealed unit with its own motors. One motor drives tracks or wheels, another runs a pump that pulls water through a built-in filter. Brushes loosen dirt as it goes. Most robots follow a planned or semi-random route, and smarter ones use gyroscopes (motion sensors), cameras or sonar to map the pool.
Because the robot filters water itself, it works independently of your pool pump. That is the big difference from suction cleaners (which plug into your skimmer) and pressure cleaners (which need a booster pump).
Corded vs cordless robot pool cleaners
This is the biggest decision you will make.
- Corded robots plug into a low-voltage power supply by the pool. They run at full power for the whole cycle and many have a weekly timer, so you can leave them in and forget them. The downside is a floating cable that can tangle.
- Cordless robots run on a lithium battery. They are easier to drop in and there is nothing to tangle, but most need lifting out and recharging after every clean, and some reviewers report suction dropping as the battery drains.
Specialist reviewers such as The Pool Nerd strongly prefer corded robots on performance and value. Cordless robots are catching up fast, especially Beatbot's surface-parking models and Dolphin's EON range. Our cordless guide goes deeper.
What to look for when buying a robot pool cleaner
- Pool size rating. Buy a robot rated for at least your pool length. Most entry robots are rated to about 30 to 33 ft, and mid-range robots to 50 ft.
- Coverage. Floor-only robots are cheaper. Wall climbing matters for in-ground pools, and waterline scrubbing stops the grubby ring at the surface.
- Filtration. Measured in microns (thousandths of a millimetre). Smaller numbers catch finer dirt such as pollen and fine sand. Leaf-heavy pools need a big basket more than a fine filter.
- Top-load filters. These lift out from the top, so you do not have to flip a wet robot over.
- Weekly timer or scheduling. Lets a corded robot run automatically.
- Swivel cable. An anti-tangle swivel saves you untwisting the cable.
- Warranty. Ranges from 1 to 3 years. Longer warranties usually signal better build quality.
- Weight. Some flagship cordless robots weigh over 13 kg (29 lb) dry, which is heavy to lift from deep water.
Dolphin vs Polaris vs Beatbot vs Aiper
Dolphin (Maytronics, founded in 1983 in Israel) has the widest range of corded robots and many specialist recommendations. Polaris (part of Fluidra, around since 1973) is strong on app-connected corded robots and has a growing cordless Freedom range. Beatbot focuses on premium cordless robots with surface cleaning and AI navigation. Aiper sells a huge cordless range from about $130 upwards and says it was the best-selling smart robotic pool cleaner brand by 2025 unit sales, though it has had two US recalls. Read our full reviews of Dolphin, Polaris, Beatbot and Aiper, or see Beatbot vs Aiper on our comparison page.
How much does a robot pool cleaner cost?
Prices in October 2026 fall into rough bands:
- Under $300: cordless, floor-only robots for small above-ground pools.
- $300 to $900: entry corded robots (such as the Dolphin E10 and Escape) and mid-range cordless robots.
- $900 to $1,500: corded robots with wall and waterline cleaning, timers and apps, plus better cordless models.
- $1,500 and up: flagship robots such as the Dolphin Premier, Beatbot AquaSense 2 Ultra and AquaSense X.
Prices change often, especially around Prime Day and Black Friday, so always check the live price before you buy.
Safety and care tips
- Charge cordless robots only with the supplied charger, away from the water and out of direct sun.
- Check for recalls on the CPSC website (US) or the UK Product Safety Database before buying second-hand.
- Most manuals say not to swim while a robot is running.
- Rinse the filter after every cycle and store the robot out of direct sunlight to protect the plastics.
- Take the robot out before shock dosing (adding a large dose of chlorine), as many manuals advise.
Buying guides
Best Cordless Robot Pool CleanerFind the best cordless robot pool cleaner: runtime, charging, filters, retrieval and warranty compared across Dolphin, BBest Above Ground Pool Cleaner RobotThe best above ground pool cleaner robot for soft-sided, steel-wall and small pools: corded and cordless picks from DolpDolphin Pool Cleaner Review 2026Our Dolphin pool cleaner review: every key Maytronics range explained, from the E10 to the Premier and cordless EON, witPolaris Robotic Pool Cleaner Review 2026Polaris robotic pool cleaner review: corded iQ+ and Sport models vs cordless Freedom robots, with prices, canister sizesBeatbot Review 2026Beatbot review: the AquaSense and Sora cordless pool robots and iSkim skimmer compared on price, runtime, filtration andAiper Review 2026Aiper review: the Scuba S1, S3, X1, V3 and X1 Pro Max cordless pool robots compared on price, runtime and filters, plus Frequently asked questions
Is it worth getting a robot pool cleaner?
For most pool owners, yes. A robot cleans the floor and walls without using your pool pump, which can cut energy use and save hours of manual vacuuming each week. The main costs are the upfront price and, for cordless models, the routine of lifting and charging.
Is Dolphin or Polaris better?
Both are long-established brands with good dealer support. Dolphin has the larger range of corded robots and more specialist recommendations, while Polaris is strong on app-connected models with long 70 ft cables. Compare specific models by pool size, coverage and warranty rather than brand alone.
Are corded or cordless robot pool cleaners better?
Corded robots usually clean more consistently because power never runs down, and many have weekly timers. Cordless robots are more convenient to drop in but need charging and lifting out after each clean. Choose cordless if the cable really bothers you.
How long do robot pool cleaners last?
Lifespan depends heavily on care, water chemistry and how often the robot runs. Warranties of 1 to 3 years are the only firm guarantee. For cordless robots, the battery is the weak point: The Pool Nerd notes many batteries are not user-replaceable and may need a paid replacement after 2 to 3 years.
Can I leave a robot pool cleaner in the pool all the time?
Most manufacturers advise taking the robot out between cycles to protect it from chemicals and sunlight. Corded robots with weekly timers are designed to stay in for scheduled runs, but check your manual.
Where can I find deals on robotic pool cleaners?
The biggest discounts usually appear around Amazon Prime Day, Black Friday and end-of-season sales in late summer. Brand stores such as Beatbot and Aiper also run frequent promotions, and Dolphin sells certified refurbished units.
ET
Written by our editorial team. We compare robots using manufacturer specifications, independent lab results and owner reviews, and we update guides when prices or models change. We do not accept payment for placement.
Our research method.
Related guides
Best Cordless Robot Pool CleanerFind the best cordless robot pool cleaner: runtime, charging, filters, retrieval and warranty compared across Dolphin, BBest Above Ground Pool Cleaner RobotThe best above ground pool cleaner robot for soft-sided, steel-wall and small pools: corded and cordless picks from DolpDolphin Pool Cleaner Review 2026Our Dolphin pool cleaner review: every key Maytronics range explained, from the E10 to the Premier and cordless EON, witPolaris Robotic Pool Cleaner Review 2026Polaris robotic pool cleaner review: corded iQ+ and Sport models vs cordless Freedom robots, with prices, canister sizesBeatbot Review 2026Beatbot review: the AquaSense and Sora cordless pool robots and iSkim skimmer compared on price, runtime, filtration andAiper Review 2026Aiper review: the Scuba S1, S3, X1, V3 and X1 Pro Max cordless pool robots compared on price, runtime and filters, plus Sources
- Maytronics Dolphin residential robots
- Maytronics corporate timeline
- Polaris robotic pool cleaners
- Polaris ALPHA iQ+ product page
- Fluidra: Polaris celebrates 50 years
- Beatbot Sora 70 product page
- Aiper Scuba S1 product page
- Bob Vila: best robotic pool cleaners (updated July 2026)
- The Pool Nerd: compare Dolphin robotic pool cleaners
- CPSC: Aiper Seagull Pro recall (2025)