Robotic pool cleaner comparison

Dolphin EON 120d vs Dolphin Explorer E40

A side-by-side comparison of pool fit, cleaning coverage, filtration, controls and the better Pool Express option.

By Brian Williamson, Pool Express product specialist
Updated November 9, 2026

Better alternative

A stronger Pool Express option

Dolphin EON 120d and Dolphin Explorer E40 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

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EON

Dolphin EON 120d

Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with minimal filter maintenance and a three-year warranty.

Listed price See product

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Explorer

Dolphin Explorer E40

Inground pools up to 50 ft that need floor cleaning.

Listed price $1,599

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A better alternative

What we recommend instead

Pool Express pick

Dolphin Quantum

Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

$1,649

Buy Dolphin Quantum

Buying guidance

Dolphin EON 120d or Dolphin Explorer E40: our take

Dolphin EON 120d and Dolphin Explorer E40 are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.

Pool fit and cleaning reach

Dolphin EON 120d is intended for inground and above-ground pools, while Dolphin Explorer E40 is intended for inground pools. Both are rated for pools up to 50 ft. Dolphin EON 120d cleans floor, walls, and waterline; Dolphin Explorer E40 cleans floor. Dolphin EON 120d's documented cleaning system includes SmartMap navigation.

Filtration and debris

Dolphin EON 120d has documented included filtration—Basket and UltraFilter—while the other model's included media is not fully published. That gives Dolphin EON 120d the clearer documented edge for fine silt, pollen and sand. Dolphin EON 120d also has the better documented path for bulky leaves and larger debris.

Controls and day-to-day ownership

Dolphin EON 120d provides a weekly timer and smartphone control; Dolphin Explorer E40 provides no fully published timer, app or remote specification.

Price, warranty and the decision

Each lists a 3-year manufacturer warranty. Dolphin EON 120d and Dolphin Explorer E40 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

Feature check: what each robot actually has

A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.

Feature	Dolphin EON 120d	Dolphin Explorer E40
Cleans the pool floor	Yes	Yes
Climbs and cleans walls	YesEdge	No
Scrubs the waterline	YesEdge	No
Fine-debris filter included	YesEdge	No
Large-debris filter	YesEdge	No
Automatic scheduling	Yes	Not listed
Smartphone app	Yes	Not listed
Anti-tangle swivel	Not listed	Not listed
3-year warranty	Yes	Yes
No recharging between cycles	No	Not listed
Built-in UV-C water treatment	No	No

Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.

Where Dolphin EON 120d stands out

Dolphin EON 120d is the better fit for owners who value cordless handling more than automatic scheduling and continuous power.

Cleans the floor, walls and waterline instead of stopping below the tile line
Includes filtration for sand, pollen and other fine debris
Includes a large-debris bin or bag for leaves
Has documented smartphone control

Where Dolphin Explorer E40 stands out

Dolphin Explorer E40 is the better fit for inground pools up to 50 ft that need floor cleaning.

Cleans the pool floor
3-year warranty