For homeowners seeking an automated pool maintenance solution, two standout robotic cleaners from Maytronics lead the mid-range segment: the Dolphin Nautilus CC Plus vs Dolphin Explorer E20. Both are built with advanced engineering and backed by the trusted Dolphin legacy, but they serve different needs and offer vastly different capabilities.
From cleaning power and filter design to smart features and pool compatibility, we break down every core difference between the Nautilus CC Plus WiFi and the Explorer E20 to determine which is the superior robotic pool cleaner for your pool and lifestyle.
Contents
Differences Dolphin Nautilus CC Plus vs Dolphin Explorer E20
Below is a summary of the specifications:
Pool Coverage and Cleaning Reach
The Dolphin Nautilus CC Plus WiFi is engineered for in-ground pools up to 50 feet in length, offering full floor and wall cleaning. It can navigate deep ends, tight corners, and angled walls with precision. This makes it ideal for large residential pools with intricate shapes or varied depths.
The Dolphin Explorer E20 also offers floor and wall cleaning, but it is limited to pools up to 33 feet in length. It performs reliably in medium-sized in-ground pools, especially those with simpler layouts, but its range is insufficient for larger or more complex pool structures.
Winner: Dolphin Nautilus CC Plus WiFi
With wider pool compatibility and better reach, the Nautilus is more versatile for large or uniquely shaped in-ground pools.
Filtration System and Debris Handling
The Nautilus CC Plus WiFi is equipped with a dual-layer filtration system, allowing it to trap both large debris like leaves and twigs and fine particles such as silt, algae, and dust. The filters are top-load cartridges that are easy to remove, clean, and reinsert, offering convenience and thorough water purification.
The Explorer E20 features a single top-load fine filter basket, which does a competent job of collecting larger debris but falls short when it comes to capturing ultra-fine contaminants. Pools prone to dust, pollen, or very fine sediment may not reach the same level of clarity as with the Nautilus.
Winner: Dolphin Nautilus CC Plus WiFi
Its dual-layer cartridge filtration system delivers superior water clarity and flexibility across varying pool environments.

Brush System and Cleaning Performance
The Nautilus CC Plus WiFi incorporates two high-speed scrubbing brushes—front and rear—designed to rotate faster than the unit moves, resulting in more aggressive scrubbing action. This configuration effectively removes algae, biofilm, and stubborn grime from both the floor and vertical surfaces.
The Explorer E20 has a single active front brush, which rotates to help break up debris on the floor and walls. While it offers solid cleaning performance for basic maintenance, it lacks the dual-action power and efficiency that the Nautilus delivers.
Winner: Dolphin Nautilus CC Plus WiFi
With double the brush contact and scrubbing force, the Nautilus provides a deeper and more consistent clean.
Both models rely on CleverClean Smart Navigation, Dolphin’s intelligent mapping algorithm. The system scans the pool layout and determines the most efficient cleaning path. However, the Nautilus CC Plus WiFi leverages its software in conjunction with app connectivity, allowing users to monitor cycle progress and make real-time adjustments.
The Explorer E20, while still efficient in navigation, offers no remote access or real-time interaction. It completes its cycles independently based on preprogrammed routes and internal sensors.
Winner: Dolphin Nautilus CC Plus WiFi
The addition of app integration allows for better cycle control and visibility into the cleaning process, making it more interactive and adaptable.
Cable Length and Tangle Prevention
The Nautilus CC Plus WiFi features a 60-foot anti-tangle swivel cable, crucial for large pools where movement can easily lead to cable twisting or entanglement. The swivel design allows the cleaner to rotate freely, covering more surface area without interruption.
The Explorer E20 includes a 50-foot standard cable without a swivel mechanism. While functional for smaller pools, the lack of swivel increases the risk of tangling during longer or repeated cleaning cycles, particularly in irregularly shaped pools.
Winner: Dolphin Nautilus CC Plus WiFi
Its longer swivel cable ensures hassle-free operation and uninterrupted performance across broader cleaning zones.

Smart Features and App Control
The Nautilus CC Plus WiFi includes full WiFi connectivity via the MyDolphin Plus app. Users can schedule cleaning sessions, start and stop the cleaner remotely, monitor status, and receive alerts—all from their smartphone. This offers true modern automation and removes the need for manual intervention.
The Explorer E20, while equipped with a basic weekly scheduler, lacks app control. Scheduling must be done directly on the unit using a single physical button, offering minimal flexibility.
Winner: Dolphin Nautilus CC Plus WiFi
Its smart control via app adds enormous value for users seeking convenience, remote operation, and flexible scheduling.
Cycle Time and Efficiency
Both the Nautilus CC Plus WiFi and the Explorer E20 feature 2-hour cleaning cycles. However, the Nautilus is built for faster, more deliberate movement patterns due to its optimized brush system and software control. Users can also start cleaning remotely to maximize time efficiency.
The Explorer E20 completes a thorough clean within the same cycle length but lacks optimization options or adaptive cleaning modes that respond to specific dirt levels or real-time inputs.
Winner: Dolphin Nautilus CC Plus WiFi
Though identical in runtime, the Nautilus uses its time more efficiently with smarter control and dual-action mechanics.
Weight and Handling
The Nautilus CC Plus WiFi weighs 19 pounds, offering robust performance while remaining manageable for most users. It includes a handle for easy removal from the pool, although the weight may feel substantial for users who need to remove the unit frequently.
The Explorer E20 is lighter at 16.5 pounds, making it easier to carry, deploy, and store. For users prioritizing portability or dealing with physical limitations, this weight difference is noticeable.
Winner: Dolphin Explorer E20
Its lighter frame makes it easier to handle, especially for seasonal.
Durability and Long-Term Reliability
Both models are backed by a 2-year warranty, but the Nautilus CC Plus WiFi features a more rugged shell, higher-powered internal components, and a stronger reputation for long-term durability in high-use environments. Its upgraded parts are built for regular operation, even in challenging pool conditions.
The Explorer E20, while reliable and well-built, is optimized for light-to-moderate use. It is best suited for users with seasonal cleaning schedules or relatively low debris loads.
Winner: Dolphin Nautilus CC Plus WiFi
With premium construction and high-end components, the Nautilus offers better durability and performance longevity.
Quick Rundown Of Dolphin Nautilus CC Plus
Quick Rundown Of Dolphin Explorer E20
Conclusion
Choose Dolphin Nautilus CC Plus WiFi if you want maximum automation, powerful scrubbing, ultra-fine filtration, and full smart control through your phone. It’s the ideal solution for larger or more complex in-ground pools, and for users who want a cleaner that can handle serious debris and operate with minimal oversight.
Choose Dolphin Explorer E20 if you need a lightweight, straightforward cleaner for a medium-sized in-ground pool, and you’re content with manual control and basic scheduling. It’s an excellent choice for seasonal use or users prioritizing simplicity and portability.
Overall Winner: Dolphin Nautilus CC Plus WiFi
With better filtration, dual scrubbing, app-enabled control, longer reach, and enhanced navigation, the Nautilus CC Plus WiFi offers a complete and future-proof robotic cleaning experience that outclasses the Explorer E20 in almost every category.