Help me choose
A stronger Pool Express option
Dolphin Explorer E40 and Dolphin S2000 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.
Explorer
Dolphin Explorer E40
Inground pools up to 50 ft that need floor cleaning.
S-Line
Dolphin S2000
Inground and above-ground pools up to 40 ft with steps or a sun ledge that need full-coverage cleaning on a schedule.
What we recommend instead
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumDolphin Explorer E40 or Dolphin S2000: our take
Dolphin Explorer E40 and Dolphin S2000 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 Explorer E40 is intended for inground pools, while Dolphin S2000 is intended for inground and above-ground pools. Dolphin Explorer E40 is rated for pools up to 50 ft; Dolphin S2000 is rated up to 40 ft. Dolphin Explorer E40 cleans floor; Dolphin S2000 cleans floor, walls, and waterline. Dolphin S2000's documented cleaning system includes 2 active brushes and CleverClean navigation.
Filtration and debris
Dolphin S2000 has documented included filtration—Basket and UltraFilter—while the other model's included media is not fully published. Dolphin S2000 has the clearer documented edge for fine silt, pollen and sand. Dolphin S2000 has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Explorer E40 provides no fully published timer, app or remote specification; Dolphin S2000 provides a weekly timer and smartphone control.
Price, warranty and the decision
Dolphin Explorer E40 is listed at $1,599 and Dolphin S2000 at $1,199; Dolphin S2000 is $400 less. Dolphin Explorer E40 lists a 3-year warranty compared with 2 years for Dolphin S2000. Dolphin Explorer E40 and Dolphin S2000 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 Explorer E40 | Dolphin S2000 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | No | YesEdge |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | No | YesEdge |
| Automatic scheduling | Not listed | Yes |
| Smartphone app | Not listed | Yes |
| Anti-tangle swivel | Not listed | Yes |
| 3-year warranty | YesEdge | No |
| No recharging between cycles | Not listed | Yes |
| 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 Explorer E40 stands out
Dolphin Explorer E40 is the better fit for pools up to 50 ft.
- Carries a 3-year warranty instead of 2 years
- Is rated for pools up to 50 ft
Where Dolphin S2000 stands out
Dolphin S2000 is the better fit for shoppers prioritizing the lower $1,199 starting price.
- 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
Dolphin Explorer E40 vs Dolphin S2000 specifications
Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.
| Specification | Dolphin Explorer E40 | Dolphin S2000 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor cleaning. | Inground and above-ground pools up to 40 ft with steps or a sun ledge that need full-coverage cleaning on a schedule. |
| Starting price | $1,599 | $1,199 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Up to 40 ft |
| Cleaning coverage | Floor | Floor, Walls, Waterline |
| Power | Not listed | Corded |
| Filtration | Not listed | Basket, UltraFilter |
| Scheduling | Not listed | Weekly schedule + app |
| App and remote | Not listed | App control |
| Cable | Not listed | Not listed |
| Robot weight | Not listed | 17.9 lb |
| Warranty | 3 years | 2 years |
Consider the stronger Pool Express option
Dolphin Explorer E40 and Dolphin S2000 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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