Often overlooked, the filter is perhaps the most important part of any pool robot. As the first robotic pool cleaner ever with MultiMedia filtration and Nanofiltration, the Dolphin Premier marks the beginning of a new era for Maytronics as the company systematically expands its product range. The Nanofilter is a unique package offering typical Dolphin performance and comprehensive everyday usability. Given to only the Top Dolphin Pool Cleaners, these robots stand out as the best performing pool robots. Models with Nanofiltration include the Dolphin Sigma, Dolphin Premier, and Dolphin Quantum . At the leading edge, each is among the most powerful robots available in the Dolphin product range.
Advanced Filtration for the Modern Pool
In the realm of modern robotic pool cleaners, there are two types of cartridge filters. Yet, the significance of the filter is often overlooked by casual pool enthusiasts. Let me shed some light on this vital component. Filters operate through a mechanical process known as sieving, determining which particles are trapped and which flow through. The traditional filter, commonly seen in most pool robots, employs a large-pored plastic mesh, a relic of the past. However, as technology progresses, so does filtration.
Now, let's delve into the exciting second generation of filters—the Nanofilter™ cartridge. This marvel of engineering redefines pool filtration with its highly efficient particulate filter, ensuring that contaminants are kept at bay and your swimming experience remains pristine.
Under the lens of a powerful microscope, the Nanofilter's micro-pore spun-bonded polyester fabric reveals a captivating tapestry of intersecting fibers. This intricate mesh allows water to flow freely while effectively trapping minuscule particles. With its deep pleats and impressive gunk-trapping capabilities, the Nanofilter stands out from the crowd. Furthermore, its pleated design offers a significant advantage—a larger surface area for capturing a greater volume of waterborne impurities, all while maintaining optimal water flow.
NanoFilter™ Up Close
When it comes to filtration prowess, pleated filters reign supreme. These advanced filters outperform their non-pleated counterparts in capturing even the tiniest waterborne particles. While both filter types can handle leaves, sediment, and insects, it's the pleated Nanofilter that truly shines. Its superior design allows it to trap pollen, algae, bacteria, pet dander, and other microscopic debris with ease. Thanks to its increased pleated surface area, the Nanofilter boasts an impressive capacity to capture contaminants. Say goodbye to turbidity—a cloudy pool appearance caused by suspended particles—and embrace the crystal-clear, immaculate water that every pool owner dreams of.
More than just dirt.
Not only does NanoFilter capture ultrafine material such as algae and microscopic particulate, but it also effectively picks up leaves, debris, and even acorns at the same time. It's remarkable ability to capture nearly everything is why so many pool owners make the switch to a ProLine™ unit.
Unlocking the Nanofilter Advantage
Imagine the Nanofilter cartridge as the guardian of your pool's water quality, eliminating a significant portion of contaminants even before they reach your pool's primary filter. This innovative filtration solution has earned the trust and admiration of pool owners who value cleanliness and convenience. Join the ranks of satisfied pool enthusiasts and experience the Nanofilter advantage firsthand.
MultiMedia™: Designed to Tackle Leaves
Tailored exclusively for the Dolphin Premier Robotic Pool Cleaner, MultiMedia™ offers a comprehensive filtration solution that leaves no debris unaddressed. Equipped with three filter sets and an optional disposable debris bag, the Premier ensures that no matter the type of debris, from leaves to microscopic particles, your pool will be flawlessly cleaned.
Which robots have NanoFilters?
Only the newest 2025 models include these Gen-2 filters. These robots are all from the Dolphin ProLine™ or Dolphin Max-Series™. With robot for every budget, here are all robots with NanoFilter capability.
Robots with Included NanoFilters
Dolphin Premier
Pros
- Built on the Dolphin Commercial Platform – Engineered with the durability and performance of Dolphin’s top commercial models.
- Multi-Media™ Filtration System – Switch between multiple filter types for optimal cleaning tailored to your pool’s needs.
- Automation Plus with Media-Alert™ – Smart weekly timer and media alert system for effortless, hands-free maintenance.
- NanoFiltration™ Technology – Captures even the tiniest particles for exceptionally clear water.
- Full Waterline Cleaning – Cleans from floor to waterline, tackling tough buildup and scum lines.
- Risk-Free 30-Day Trial – Experience the Dolphin difference with a worry-free trial period.
- No Restocking Fee – Return with confidence if it’s not the right fit for you, free of hidden fees.
Cons
- Pricey – Still, it’s the lowest price in its class.
The Dolphin Premier doesn't just included NanoFilters, but has Multi-Media™. This means the Dolphin Premier includes:
- An Oversized Leaf Bag (only Dolphin with a Leaf Bag)
- NanoFilters
- Standard Filters
- (Optional) Disposable Debris Bags
With dual commercial-grade motors, the Premier's ProLine™ power sets it above the rest. Rated best robotic pool cleaner for 2023 by USA Today and best pool robot for leaves, the Premier is a top choice and the flagship Dolphin pool robot.
Dolphin Sigma
Pros
- Built on a Commercial-Grade Platform – Designed with the same durability and power as Dolphin’s commercial model.
- myDolphin™ Plus App – Stay connected and control your Sigma from anywhere with app-based functionality.
- Smart Weekly Timer with Custom Scheduling – Set advanced cleaning schedules for hands-free maintenance throughout the week.
- Precision Gyroscope Navigation – Enhanced mobility and efficiency with advanced gyroscopic technology.
- NanoFiltration™ Technology – Captures ultra-small particles for crystal-clear water.
- Complete Waterline Cleaning – Scrubs from pool floor to waterline, tackling the toughest scum lines.
- Risk-Free 30-Day Trial – Try the Sigma with confidence, knowing you can return it hassle-free.
- No Restocking Fee – If you’re not satisfied, return it without hidden costs.
- Extended 3-Year Warranty – Enjoy long-term peace of mind with comprehensive coverage.
Cons
- Most Expensive Option – Still lowest price in its class.
With included NanoFiltration™, a gyroscope, myDolphin Plus app, and three commercial-grade motors, the Sigma is the top Dolphin pool cleaner for 2025. The gyroscope unlocks a whole new level of cleaning performance as it vacuums and filters your pool water with power - ensuring a crystal clean pool.
Dolphin Quantum
Pros
- PowerJet 3D Mobility – Advanced navigation for efficient, thorough coverage across your entire pool.
- Automation Plus with Weekly Timer – Set and forget with a customizable weekly schedule for hands-free cleaning.
- MaxBin™ with NanoFiltration™ – High-capacity debris collection with ultra-fine filtration for crystal-clear water.
- Complete Waterline Cleaning – Reaches from floor to waterline, eliminating scum and buildup for a pristine pool.
- Risk-Free 30-Day Trial – Try it with confidence and experience the difference firsthand.
- No Restocking Fee – Easy returns with zero hidden fees if it’s not the perfect fit.
- Comprehensive 2-Year Warranty – Enjoy reliable performance with full coverage and peace of mind.
Cons
- No Leaf Bag
With an XXL MaxBin™, the Dolphin Quantum has the largest filter available. At over 400in2, the Dolphin Quantum's MaxBin is over 225% larger than standard Dolphin pool robots. With waterline cleaning and an impressive PowerJet 3D mobility, the Dolphin Quantum is a great choice for any pool.
Robots with Optional NanoFilters
Dolphin Cayman
Pros
- MaxBin™ High-Capacity Filtration – Holds more debris for less frequent emptying and a cleaner pool.
- Convenient Weekly Timer – Automate your cleaning schedule for effortless pool maintenance.
- Free NanoFilters™ at Poolbots – Redeem with code DEEPCLEAN23 for an upgrade to ultra-fine filtration.
- Advanced Wall Climbing – Reaches floors, walls, and waterline for comprehensive cleaning.
- Risk-Free 30-Day Trial – Try it with confidence, knowing you can return it if it’s not perfect for you.
- No Restocking Fee – Enjoy a hassle-free return process without extra fees.
- Reliable 2-Year Warranty – Covered for long-term performance and peace of mind.
Cons
- No Waterline Cleaning
The Dolphin Cayman is best value Dolphin robot. With a weekly timer, Maxbin™, and wall climbing, it is the best performing pool robot under $1000. With optional NanoFilters, you can upgrade the Cayman to clean your pool with more power and precision than ever before. Free with purchase at Poolbots, just use code: DEEPCLEAN23 at checkout for a limited time.
Dolphin Escape
Pros
- Ideal for Above-Ground and Smaller In-Ground Pools – Perfectly suited for compact pool spaces.
- Free NanoFilters™ Upgrade at Poolbots – Redeem with code DEEPCLEAN23 for enhanced filtration performance.
- Comprehensive Floor Coverage – Ensures every inch of your pool floor is thoroughly cleaned.
- Powerful HyperBrush™ Technology – Delivers a deep scrub to lift stubborn dirt and debris.
- Risk-Free 30-Day Trial – Experience it with zero commitment, knowing you can return it if needed.
- No Restocking Fee – Enjoy a hassle-free return process without any hidden fees.
- Reliable 2-Year Warranty – Protected for long-term performance and peace of mind.
Cons
- No Wall Climbing or Waterline Cleaning
- No Weekly Timer
Above-ground pool robots deserve NanoFilters too. Rated as the best above-ground robotic pool cleaner, the Escape provides a fantastic performance for above-ground and small in-ground pools. Unlock a deeper clean in your above-ground pool, as the Dolphin Escape utilizes these Gen-2 filters alongside its HyperBrush. These optional NanoFilters are currently free with purchase at Poolbots when using code: DEEPCLEAN23.
Why Shop Poolbots?
Your pool robot purchase is only as good as the company that sells it. Finding the right robotic pool cleaner for your pool can be a daunting task. Pool robots are one of the largest investment you’ll make for your pool. Online retailers know this, and they do not liking returning the money you’ve handed over. Many online retailers advertise easy returns but hide the fact that they charge a hefty restocking fee. One buyer wrote in to us about this exact experience, after being hit with a 20% fee, and that's why it's important to look for "No Restocking Fee" when shopping for pool cleaners. While Amazon is a popular choice for pool cleaners, it's important to read the fine print and be aware of the potential for hidden fees. About 90% of pool robots sold on Amazon have a 20% restocking fee. Don't get taken advantage of - look for "No Restocking Fee" when shopping online. This will give you confidence that you can make the purchase without worrying about hidden costs.
Which robot is best for your pool?
When looking for a pool robot, you'll want to take all of these options into consideration. With a variety of different pool robot guides, we cover the best robotic pool cleaners from the best in-ground to best above ground models.
Here at Poolbots, we will never charge a restocking fee and always offer a free 30 day trial. We know a robotic pool cleaner is the heart of your pool, choose with confidence. If you want a unit with NanoFilters, make sure to check out the Dolphin ProLine™ which includes the Dolphin Sigma, Dolphin Premier, and Dolphin Quantum models.
