Help me choose
A stronger Pool Express option
Dolphin Explorer E20 and Dolphin Premium 40 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 E20
Inground and above-ground pools up to 33 ft that need floor and wall cleaning.
Premium
Dolphin Premium 40
Inground pools up to 50 ft that need floor, wall and waterline cleaning with app scheduling and a caddy.
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 E20 or Dolphin Premium 40: our take
Dolphin Explorer E20 and Dolphin Premium 40 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 E20 is intended for inground and above-ground pools, while Dolphin Premium 40 is intended for inground pools. Dolphin Explorer E20 is rated for pools up to 33 ft; Dolphin Premium 40 is rated up to 50 ft. Dolphin Explorer E20 cleans floor and walls; Dolphin Premium 40 cleans floor, walls, and waterline. Dolphin Explorer E20 lists 1 active brush and Dual DC motors. Dolphin Premium 40 lists 2 active brushes and CleverClean navigation.
Filtration and debris
Dolphin Explorer E20 includes Basket; Dolphin Premium 40 includes Basket and UltraFilter. Dolphin Premium 40 has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Explorer E20 provides one-touch starts and power-supply controls; Dolphin Premium 40 provides a weekly timer and smartphone control. Dolphin Explorer E20 uses a 40 ft corded cable, while Dolphin Premium 40 uses continuous corded power. Dolphin Explorer E20 is listed at 14.5 lb versus 18.6 lb for Dolphin Premium 40; that 4.100000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Explorer E20 is listed at $699 and Dolphin Premium 40 at $1,629; Dolphin Explorer E20 is $930 less. Each lists a 2-year manufacturer warranty. Dolphin Explorer E20 and Dolphin Premium 40 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 E20 | Dolphin Premium 40 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | No | YesEdge |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | Not listed | Yes |
| 3-year warranty | No | No |
| No recharging between cycles | Yes | 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 E20 stands out
Dolphin Explorer E20 is the better fit for shoppers prioritizing the lower $699 starting price.
- Is listed $930 lower
- Weighs 14.5 lb versus 18.6 lb
Where Dolphin Premium 40 stands out
Dolphin Premium 40 is the better fit for pools up to 50 ft.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Includes filtration for sand, pollen and other fine debris
- Uses 2 active brushes instead of 1
- Can start on a weekly schedule without a manual launch before every cycle
Dolphin Explorer E20 vs Dolphin Premium 40 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 E20 | Dolphin Premium 40 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 33 ft that need floor and wall cleaning. | Inground pools up to 50 ft that need floor, wall and waterline cleaning with app scheduling and a caddy. |
| Starting price | $699 | $1,629 |
| Pool type | Inground, Above-ground | Inground |
| Maximum pool length | Up to 33 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls | Floor, Walls, Waterline |
| Power | Corded | Corded |
| Filtration | Basket | Basket, UltraFilter |
| Scheduling | One-touch start | Weekly schedule + app |
| App and remote | Power-supply controls | App control |
| Cable | 40 ft | Not listed |
| Robot weight | 14.5 lb | 18.6 lb |
| Warranty | 2 years | 2 years |
Consider the stronger Pool Express option
Dolphin Explorer E20 and Dolphin Premium 40 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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