Help me choose
A stronger Pool Express option
Dolphin Explorer E40 and Dolphin Premium 30 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.
Premium
Dolphin Premium 30
Inground and above-ground pools up to 50 ft that need floor, wall and waterline cleaning on a weekly timer.
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 Premium 30: our take
Dolphin Explorer E40 and Dolphin Premium 30 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 Premium 30 is intended for inground and above-ground pools. Both are rated for pools up to 50 ft. Dolphin Explorer E40 cleans floor; Dolphin Premium 30 cleans floor, walls, and waterline. Dolphin Premium 30's documented cleaning system includes 2 active brushes and CleverClean navigation.
Filtration and debris
Dolphin Premium 30 has documented included filtration—Basket and UltraFilter—while the other model's included media is not fully published. Dolphin Premium 30 has the clearer documented edge for fine silt, pollen and sand. Dolphin Premium 30 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 Premium 30 provides a weekly timer and power-supply controls.
Price, warranty and the decision
Dolphin Explorer E40 is listed at $1,599 and Dolphin Premium 30 at $1,279; Dolphin Premium 30 is $320 less. Dolphin Explorer E40 lists a 3-year warranty compared with 2 years for Dolphin Premium 30. Dolphin Explorer E40 and Dolphin Premium 30 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 Premium 30 |
|---|---|---|
| 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 | No |
| 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 inground pools up to 50 ft that need floor cleaning.
- Carries a 3-year warranty instead of 2 years
- Cleans the pool floor
Where Dolphin Premium 30 stands out
Dolphin Premium 30 is the better fit for shoppers prioritizing the lower $1,279 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
- Is listed $320 lower
Dolphin Explorer E40 vs Dolphin Premium 30 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 Premium 30 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor cleaning. | Inground and above-ground pools up to 50 ft that need floor, wall and waterline cleaning on a weekly timer. |
| Starting price | $1,599 | $1,279 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Up to 50 ft |
| Cleaning coverage | Floor | Floor, Walls, Waterline |
| Power | Not listed | Corded |
| Filtration | Not listed | Basket, UltraFilter |
| Scheduling | Not listed | Weekly schedule |
| App and remote | Not listed | Power-supply controls |
| Cable | Not listed | Not listed |
| Robot weight | Not listed | 18.4 lb |
| Warranty | 3 years | 2 years |
Consider the stronger Pool Express option
Dolphin Explorer E40 and Dolphin Premium 30 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.
More robotic pool cleaner comparisons
Keep comparing without rebuilding the same specification table yourself.
Clear UV vs Clear S
Pool Express pick: Clear UV
Dolphin Quantum vs Clear S
Pool Express pick: Dolphin Quantum
Dolphin Premier vs Dolphin Sigma
Pool Express pick: Dolphin Premier
Dolphin Premier vs Dolphin Quantum
Pool Express pick: Dolphin Quantum
Dolphin Sigma vs Dolphin Quantum
Pool Express pick: Dolphin Quantum
Dolphin Cayman vs Dolphin Escape
Pool Express pick: Dolphin Cayman