You’ve just finished a long week, and all you want is a refreshing dip in your inground pool. But instead of crystal-clear water, you’re greeted by a layer of debris on the floor and a grimy waterline. Sound familiar? Keeping an inground pool pristine can feel like a part-time job, but the right robotic cleaner can give you back your weekends. In this guide, we’ve reviewed the best Dolphin S Series cleaners for inground pools to help you find a model that tackles your pool’s unique needs, whether you have a small lap pool or a sprawling oasis.
Dolphin has been a trusted name in pool care for over 40 years, and their S Series includes some of the most advanced robotic cleaners on the market. We’ve evaluated ten top models across key criteria like wall climbing, filtration, and navigation to bring you a focused, no-nonsense comparison. For more on the broader Dolphin lineup, check out our category page on Dolphin robotic pool cleaners to see how these models fit into the bigger picture.
Pros
- Powerful wall climbing and scrubbing on all pool surfaces.
- Simple plug-and-play setup with no complicated installation.
- Top-load filter basket for convenient maintenance.
- Proven brand with three decades of pool cleaning expertise.
- Two-hour cleaning cycle for a fast turnaround.
Cons
- No smart app or Wi-Fi connectivity for remote control or scheduling.
- May be pricey for budget-conscious buyers, though the quality justifies the cost.
- Not designed for above-ground pools (in-ground pool focus).
The Dolphin Premium 20 is a robotic pool vacuum cleaner designed for in-ground pools of all shapes and surface types. It targets pool owners who want a reliable, hands-off cleaning solution that delivers spotless results without daily effort. With its powerful wall-climbing capability and active scrubbing brush, this unit cleans both floors and walls thoroughly.
Standout features include a top-load filter basket that makes debris removal quick and easy, plus a plug-and-play system that removes the need for complex setup. Just activate the power supply, drop the robot in, and it runs a full cleaning cycle in two hours. The active scrubbing brush ensures sticky dirt and algae are lifted, leaving surfaces pristine.
Build quality is consistent with Dolphin's reputation for durability. The unit weighs about 23 pounds and has a compact footprint, making it easy to carry and store. The gray color is neutral and fits most pool environments. While it lacks smart connectivity features such as app control or programmable schedules, its straightforward operation is a plus for those who prefer simplicity.
One potential drawback is the absence of Wi-Fi or Bluetooth, which limits automation. Additionally, the price point may be higher than some entry-level cleaners, but the robust construction and performance justify the investment for serious pool owners. The lack of customer reviews at launch means early adopters should rely on Dolphin's established brand history.
Overall, the Dolphin Premium 20 is an excellent choice for homeowners seeking a dependable, easy-to-use robotic pool cleaner. It delivers strong cleaning performance, requires minimal maintenance, and is backed by decades of expertise. If you value a no-fuss, efficient cleaning solution, this model is well worth considering.
Pros
- Wall climbing feature cleans both floors and walls, reducing manual scrubbing.
- Active scrubbing brush provides deep cleaning without damaging pool surfaces.
- Easy top-load filter basket simplifies maintenance.
- Plug and play operation makes it user friendly, no complicated installation.
- Dolphin brand reputation for reliability and performance.
Cons
- Designed for in-ground pools only, not suitable for above-ground pools.
- No remote control or smartphone app for manual direction, relies on autonomous navigation.
- Initial investment may be higher compared to manual pool cleaning tools.
The Dolphin Nautilus CC Plus is a fully automatic robotic pool cleaner specifically engineered for in-ground pools up to 40 feet in length. It is best suited for pool owners who want a hands free cleaning solution that handles both floors and walls with minimal intervention.
Standout features include its active scrubbing brush which combines wall climbing power with a continuous scrub action. This means it loosens and removes stubborn dirt, algae, and debris from pool surfaces without the need for manual brushing. The top load filter basket is another highlight, allowing quick removal of captured debris for consistently clear water.
In real world performance, the plug and play design truly simplifies pool maintenance. Simply connect the power supply, drop the unit into the water, and let it run for about two hours. Its smart navigation ensures thorough coverage even around obstacles and irregular shapes. The build quality reflects Dolphin's40 plus year legacy in pool care, using durable materials to withstand constant submersion and chemical exposure.
One potential drawback is its limitation to in ground pools only, so owners of above ground pools will need a different model. Also, there is no manual remote control, but the autonomous navigation is generally effective. At just over20 pounds, it is easy to lift but may be heavy for some users. Overall, the NautilusCC Plus offers exceptional value for those seeking a reliable, low maintenance robotic cleaner.Final verdict: For in ground pool owners who value convenience and thorough cleaning, the Dolphin Nautilus CC Plus is a top choice. Its wall climbing scrubbing action, easy filter access, and set and forget operation make it a worthwhile investment that saves time and effort.
Brand: Dolphin
Model: Nautilus CC Plus
Color: Black
Dimensions: 16 x 10 x 16 inches
Weight: 20.8 pounds
Compatibility: In ground pools up to 40 feet in length
Cleaning Cycle: Approximately 2 hours
Pros
- Fully cordless design eliminates cable tangles and simplifies setup.
- Wi-Fi app control offers convenient scheduling and mode customization.
- Effective wall climbing and waterline scrubbing for a thorough clean.
- Large top-load filter basket is easy to clean and maintain.
Cons
- Battery runtime of 2.5 hours may not be sufficient for very large or heavily soiled pools.
- Requires Wi-Fi connection for full app functionality; offline operation limited to manual start.
- No included charging dock or caddy for storage; must place on a flat surface to charge.
The Dolphin Nautilus EON 100 is a cordless robotic pool cleaner designed for in-ground pools up to 50 feet. It is ideal for pool owners who want a tangle-free cleaning experience with the convenience of smartphone control. This model combines the reliability of Dolphin's cleaning technology with a rechargeable battery and smart navigation.
Its cordless design eliminates the hassle of cords, while the Wi-Fi app lets you schedule cleanings from anywhere. The robot actively climbs walls and scrubs the waterline, ensuring every surface is clean. With up to 2.5 hours of runtime, it can handle most residential pools in a single cycle.
The Nautilus EON 100 features a robust build with a top-load filter basket that is easy to access and clean. Its smart navigation system reduces missed spots, moving efficiently across the pool floor and walls. The blue and black color scheme is sleek and modern.
One potential drawback is the 2.5-hour battery life, which might not be enough for very large pools or heavy debris. Additionally, the robot requires Wi-Fi for full app features, and it does not come with a charging stand. However, these are minor trade-offs for the convenience of cordless operation.
Overall, the Dolphin Nautilus EON 100 is an excellent choice for pool owners seeking a cordless, app-controlled cleaner with strong performance. Its ability to scrub walls and waterline, combined with easy maintenance, makes it a solid investment for keeping your pool swim-ready.
Color: Blue/Black
Dimensions: 6.96 x 6.38 x 4.39 inches
Product Group: Lawn & Patio
Battery Runtime: Up to 2.5 hours
Pool Size: Up to 50 feet
Pros
- Wall-climbing capability ensures comprehensive cleaning of floors and walls
- Active scrubbing brush is gentle on surfaces yet tough on debris
- Simple plug-and-play setup requires no complex installation
- Cuts down manual brushing and vacuuming time significantly
- Trusted Dolphin brand with four decades of pool cleaning expertise
Cons
- Optimized for pools up to 26 feet, so larger pools may require a more powerful model
- Full cleaning cycle takes about 2 hours, which may feel long for quick touch-ups
- No built-in scheduling or remote control features are mentioned, limiting automation options
The Dolphin Nautilus Pool-Up is a robotic pool vacuum designed for small above-ground and in-ground pools up to 26 feet. It combines one-touch automation with active scrubbing and wall-climbing performance to keep your pool clean with minimal effort. Ideal for pool owners who want a reliable, hands-free solution.
Standout features include the efficient wall-climbing scrubber brush, which works on a variety of pool surfaces and shapes. The plug-and-play system makes setup incredibly simple: plug it in, place it in the pool, and power on. Within two hours, it lifts dirt, debris, and algae from both floors and walls, freeing you from manual brushing.
Design and build quality benefit from Dolphin's four decades of pool cleaning expertise. The unit is lightweight at 18.2 pounds and measures 18 x 16 x 10 inches, making it compact enough to store and easy to handle. Colors are clean white and the construction feels durable, though long-term reliability is yet to be verified with use.
One limitation is that this model is best for smaller pools, so owners of very large pools may need a bigger unit. The two-hour cycle is also not the fastest on the market, and there is no remote control or scheduling feature as part of this package.
Overall, the Dolphin Nautilus Pool-Up delivers dependable, automated cleaning for small to mid-sized pools. It is a smart investment for anyone seeking convenience, solid scrubbing power, and a reputable brand at a reasonable price.
Pros
- Exceptional debris capacity with top-loading, easy-to-empty filter.
- Powerful scrubbing action removes tough algae and stuck-on grime.
- Intelligent navigation reduces cleaning time and covers the pool thoroughly.
- Lightweight handling and quick water release simplify maintenance.
- Two-year warranty provides confidence in build quality.
Cons
- Weight listed as 14 lbs in description but specifications show 24 lbs, which may be confusing.
- Lacks remote control or app connectivity for manual control or scheduling.
- Maximum pool length of 33 feet limits use for larger pools.
The Dolphin Escape robotic pool cleaner is designed for both above ground and in-ground pools up to 33 feet, making it a versatile option for many homeowners. It targets vinyl, fiberglass, and gunite surfaces, and its affordable price point offers professional-grade cleaning without the high cost.
Standout features include a massive top-loading cartridge filter that holds 60% more debris than standard models, reducing the need for frequent emptying. The HyperBrush, driven by dual motors, aggressively scrubs and vacuums away algae, sand, and leaves, while HyperGrip continuous tracks ensure steady movement on all pool floors and walls.
SmartNav 2.0 navigation scans the pool and maps an efficient cleaning route, avoiding obstacles and ensuring complete coverage. The cleaner weighs only 14 pounds (as per description) and features a quick water release system, making it easy to lift and rinse after each use. The build quality feels solid, backed by a two-year warranty.
Potential drawbacks include a weight discrepancy: the listed weight is 14 lbs, but the shipping weight is 24 lbs, which may imply the unit is heavier than expected. It also lacks smart connectivity features like remote control or app scheduling, which some competitors offer. Additionally, it is not suitable for pools larger than 33 feet.
Overall, the Dolphin Escape is a strong performer for medium-sized pools, delivering excellent cleaning power and easy maintenance at a reasonable price. Its top-loading filter and intelligent navigation make it a reliable choice for pool owners who want a hassle-free cleaning experience.
Pros
- Active scrubber brush provides thorough cleaning without manual effort.
- Top-load filter access simplifies maintenance and reduces mess.
- Smart navigation ensures efficient coverage of various pool shapes.
- Plug-and-play operation makes it extremely user-friendly.
- Trusted brand with decades of experience in pool cleaning technology.
Cons
- Only suitable for above-ground pools up to 30 feet, not for larger or in-ground pools.
- No reviews available yet, so long-term reliability is unproven.
- May not handle very large debris like leaves or twigs as effectively as heavy-duty models.
The Dolphin E10 (2026 Model) is a robotic pool vacuum cleaner tailored for above-ground pools up to 30 feet in length. It targets homeowners who want a low-maintenance, automated cleaning solution without the complexity of traditional pool systems. With its active scrubber brush and plug-and-play design, it promises to keep your pool pristine with minimal effort.
Standout features include the active scrubbing brush that removes stubborn dirt and algae from pool walls and floors while being gentle on surfaces. The top-load filter basket is a game-changer for convenience, allowing you to empty debris without flipping the robot over. Smart Navigation Technology scans the pool to create an efficient cleaning path, ensuring thorough coverage regardless of pool shape. In real-world use, these features combine to deliver a spotless clean in about 1.5 hours per cycle.
Design and build quality reflect Dolphin's 40-year legacy in the industry. The unit is compact at 17.19 x 15.78 x 10.39 inches and lightweight at 14.6 pounds, making it easy to deploy and store. The gray finish is practical and blends well with pool surroundings. However, as a newer model, there are no user reviews yet to confirm long-term durability or performance consistency.
Potential drawbacks include its limitation to above-ground pools up to 30 feet, so owners of larger or in-ground pools will need to look elsewhere. Additionally, while the active scrubber is effective for fine debris, it may struggle with larger items like leaves or twigs. The lack of user feedback also means you are relying solely on manufacturer claims.
Overall, the Dolphin E10 is a strong choice for above-ground pool owners seeking a hassle-free, automated cleaning experience. Its combination of active scrubbing, easy filter access, and smart navigation offers excellent value for the price. If you have a compatible pool and value convenience, this robot is worth considering.
Pros
- Efficient wall climbing ensures full coverage cleaning
- Active scrubbing eliminates the need for manual brushing
- Easy filter maintenance with top load basket
- Hassle free plug and play operation
- Trusted brand with decades of experience
Cons
- May require periodic filter cleaning during heavy debris seasons
- No information on cord length or tangle resistance
- Higher upfront cost compared to suction side cleaners
The Dolphin Proteus DX3 is an automatic robotic pool vacuum designed for inground pools up to 33 feet in length. It targets pool owners who want a hands off cleaning solution that tackles walls and floors without manual brushing. With a 4.4 star rating from the Dolphin lineup, it promises reliable performance.
The standout feature is the active scrubber brush, which actively dislodges dirt and algae from surfaces while being gentle on vinyl, fiberglass, and concrete. The wall climbing ability ensures no area is missed, regardless of pool shape. In real world use, the two hour cleaning cycle delivers a noticeably cleaner pool with minimal effort.
Design and build quality reflect Dolphin's 40 year legacy. The top load filter basket is conveniently accessible for quick debris removal, and the plug and play system means no complex installation. The unit weighs 14.8 pounds and measures 22.2 x 17.6 x 12.8 inches, making it compact yet sturdy for daily use.
One potential drawback is that the cord length is not specified, which could be a concern for larger pool setups. Additionally, during heavy leaf seasons, you might need to empty the filter mid cycle. However, for typical residential pools, the Proteus DX3 performs admirably without constant attention.
Overall, the Dolphin Proteus DX3 is a solid investment for anyone seeking an automatic cleaner that scrubs walls and floors effectively. It combines ease of use, strong cleaning power, and brand reliability. If your pool is under 33 feet and you value convenience, this model is highly recommended.
Pros
- Wall-climbing capability cleans waterline and walls without extra work
- Active scrubber brush removes tough debris and algae
- Easy top-load filter basket simplifies maintenance
- Plug-and-play setup requires no complicated installation
- Trusted Dolphin brand with decades of pool cleaning expertise
Cons
- Higher upfront cost compared to manual pool cleaning tools
- Designed for pools up to 33 feet, so larger pools may need a different model
- No advanced scheduling or app controls, it operates with a simple plug-and-play system
The Dolphin Advantage is a robotic pool vacuum cleaner designed for in-ground pools up to 33 feet in length. It is an excellent choice for homeowners who want to automate their pool cleaning routine and avoid the effort of manual brushing and vacuuming.
The standout feature is its wall-climbing capability combined with an active scrubber brush. This allows the cleaner to scale pool walls and scrub away algae, dirt, and debris without any extra effort from you. The plug-and-play system means you simply connect it, drop it in the water, and let it work for about two hours.
Build quality is solid, with a user-friendly top-load filter basket that makes cleaning the filter quick and straightforward. The unit is designed to handle various pool shapes and surfaces, and it comes from Dolphin, a brand with over 40 years of experience in robotic pool cleaners.
One potential drawback is the price, which may be higher than simpler manual cleaners. Also, it is only recommended for pools up to 33 feet, so owners of larger pools may need a more powerful model. There are no smart app controls or programmable schedules, but the simple operation is part of its appeal.
Overall, the Dolphin Advantage is a reliable, low-maintenance pool cleaning solution for anyone with an average-sized in-ground pool. It delivers strong cleaning performance, easy maintenance, and the convenience of hands-free operation, making it a worthwhile investment for pool owners.
Dimensions: 22.2 x 17.6 x 12.8 inches
Weight: 24.4 pounds
Pool Type: In-ground
Max Pool Length: 33 feet
Cleaning Time: Approximately 2 hours
Filter Type: Top-load basket
Includes: Wall climbing, active scrubber brush
Pros
- Wi-Fi connectivity enables remote scheduling and control
- Wall climbing and active scrubbing provide thorough cleaning on all surfaces
- Top-load filter basket simplifies maintenance
- Trusted Dolphin brand with 40+ years of pool care expertise
- Suitable for in-ground pools up to 50 feet long
Cons
- Premium price point may be steep for budget-conscious buyers
- No customer reviews yet, so real-world long-term performance is unverified
- Requires stable Wi-Fi for full smart functionality
The Dolphin Nautilus CC Pro Wi-Fi is an automatic robotic pool cleaner built for in-ground pools up to 50 feet. It is ideal for pool owners who want a set-and-forget solution that handles floors, walls, and waterline scrubbing without manual brushing.
The integrated Wi-Fi allows you to schedule cleanings from your smartphone, so your pool is ready whenever you are. The wall-climbing design and active scrubbing brush work together to lift and remove debris from a variety of surfaces, including tile, vinyl, and plaster.
Dolphin has spent over 40 years perfecting robotic pool cleaners, and the Nautilus CC Pro reflects that expertise. The top-load filter basket simplifies debris removal, and the 16.5-pound unit is easy to lift and place into your pool. Its compact 20-inch footprint helps maneuver around ladders and corners.
The biggest hurdle is the price, which positions this as an investment rather than an impulse buy. Additionally, the smart scheduling relies on a stable Wi-Fi connection, and the lack of existing customer reviews means you are trusting the brand's reputation more than verified owner feedback.
If you are looking for a premium, feature-rich robotic cleaner and want to reduce the time you spend maintaining your pool, the Dolphin Nautilus CC Pro Wi-Fi is a compelling option. Its combination of app control, wall scrubbing, and easy maintenance makes it a standout choice for demanding in-ground pool owners.
Color: Black
Size: Nautilus CC Pro
Dimensions: 20 x 20 x 20 inches
Weight: 16.5 pounds
Product Group: Lawn & Patio
Compatibility: In-ground pools up to 50 feet in length
Pros
- Wi-Fi connectivity allows scheduling and monitoring from your phone
- Waterline scrubber eliminates manual cleaning of pool edges
- Active scrubbing brush removes dirt without damaging surfaces
- Dual drive handles tight corners and obstacles with ease
- Top load filter makes maintenance quick and mess free
Cons
- High initial investment compared to basic pool cleaners
- Requires stable Wi-Fi connection for full smart features
- May be overkill for smaller or above ground pools
The Dolphin Nautilus CC Supreme Wi-Fi is a premium robotic pool cleaner designed for in ground pools up to 50 feet. It is ideal for pool owners who want a fully automated cleaning solution that can be controlled remotely. With a 4.3 star rating, it promises reliable performance and advanced features like waterline scrubbing and dual drive navigation.
Standout features include always connected Wi Fi for scheduling cleanings from anywhere, and the active waterline scrubber that keeps the pool edges spotless. The dual drive system allows precise movement around obstacles and tight corners, while the active scrubbing brush is gentle on surfaces but tough on debris. The top load filter basket makes debris removal easy without getting into the water.
Build quality is solid, reflecting Dolphin's 40 years of experience in robotic pool cleaners. The unit weighs 24.6 pounds and measures 20x20x20 inches, making it robust but manageable. The black color is standard for pool equipment. Overall, it feels durable and well engineered for long term use.
Potential drawbacks include the high price tag, which may not suit every budget. Additionally, the Wi Fi functionality requires a stable home network, and the cleaner might be overkill for smaller or above ground pools. However, for large in ground pools, the convenience and cleaning power are hard to beat.
Verdict: The Dolphin Nautilus CC Supreme Wi Fi is a top tier choice for pool owners who value automation and thorough cleaning. Its waterline scrubbing, precise navigation, and remote control make it a standout. While costly, it delivers on its promise of hassle free pool maintenance. Recommended for those with larger in ground pools who want the best in robotic cleaning.
Buying Guide: How to Choose the Best Dolphin S Series Cleaner for Your Inground Pool
Selecting the right robotic pool cleaner goes beyond just picking a popular model. You need to consider your pool’s size, shape, and the type of debris you typically encounter. Here are the key factors we considered when evaluating these Dolphin S Series models.
Pool Size and Compatibility
Not all Dolphin cleaners are built for the same pool dimensions. Models like the Nautilus Pool-Up are designed for smaller inground pools up to 26 feet, while the Nautilus CC Pro can handle pools up to 50 feet. Choosing a cleaner that matches your pool’s length ensures efficient coverage without wasted time or energy. Always check the manufacturer’s recommended pool size before making a decision.
For above ground options, you might want to explore our guide on best above ground robotic pool cleaners for a different set of recommendations.
Cleaning Performance: Walls, Waterline, and Scrubbing
A robotic cleaner should do more than just vacuum the floor. Look for models with wall-climbing capabilities, like the Dolphin Premium 20, which actively scrub walls and the waterline. The active scrubbing brush design is a standout feature on many Dolphin models, as it eliminates manual scrubbing and is gentle on all pool surfaces, including vinyl and fiberglass.
Filtration and Maintenance
Easy filter maintenance is a game-changer. The top-load filter basket found on models like the Nautilus CC Plus allows you to quickly remove and rinse the filter without getting your hands dirty. Some models, like the Escape, feature a larger debris cartridge that holds up to 60 percent more debris, which is ideal for pools surrounded by trees or gardens. A fine filter also captures small particles, keeping your water crystal clear.
Navigation and Smart Features
Smart navigation ensures your cleaner covers the entire pool without missing spots. Models like the Nautilus EON 100 offer Wi-Fi connectivity for app control, allowing you to schedule cleanings from your phone. Others, like the Classic CC Plus, use reliable plug-and-play simplicity. Consider whether you value smart features for convenience or prefer a straightforward, set-and-forget operation.
Final Thoughts
After reviewing the top Dolphin S Series cleaners for inground pools, we believe the best choice depends on your specific needs. For most homeowners with standard inground pools, the Dolphin Automatic Robotic Pool Vacuum Cleaner delivers an exceptional balance of wall scrubbing power and easy maintenance, making it our top pick for versatile performance. If you have a larger pool and want the latest cordless convenience with Wi-Fi control, the Dolphin Nautilus EON 100 Cordless Robotic Pool is an excellent upgrade that offers flexibility and smart scheduling. Both models uphold the trusted Dolphin legacy, so you can enjoy a cleaner pool with less effort.
Related Guides
- Top Polaris Pool Robots for Inground Pools in 2026
- Beatbot Inground Pool Cleaners
- Inground Pool Vacuum Black Friday Deals 2026
Frequently Asked Questions
How long does a Dolphin S Series robotic cleaner take to clean an inground pool?
Most Dolphin S Series models complete a full cleaning cycle in about two hours. Some newer models, like the Dolphin Nautilus EON 100, offer a cordless runtime of up to 2.5 hours, making them suitable for larger inground pools up to 50 feet.
Are Dolphin S Series cleaners compatible with all inground pool surfaces?
Yes, Dolphin S Series robotic cleaners are designed to work on all common inground pool surfaces, including vinyl, fiberglass, gunite, and concrete. Their active scrubbing brushes are gentle yet effective, ensuring no damage to your pool’s finish.
Do I need to run my Dolphin every day?
It depends on your pool’s debris load. For daily maintenance, running the cleaner once a day is often sufficient. Models with Wi-Fi, like the Nautilus CC Pro, allow you to schedule cleanings, so your pool is always ready for swimming. Check out our guide on best Dolphin S200 pool cleaners for more tips on scheduling.
How do I clean the filter on my Dolphin S Series cleaner?
Most models feature a top-load filter basket that you can easily remove and rinse with a garden hose. This design reduces maintenance time and keeps debris from re-entering your pool. Always consult your model’s manual for specific instructions.
