Help me choose
A stronger Pool Express option
BWT RC50 and Dolphin Explorer E20 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Explorer
Dolphin Explorer E20
Inground and above-ground pools up to 33 ft that need floor and wall cleaning.
What we recommend instead
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
$1,079
Buy Dolphin CaymanBWT RC50 or Dolphin Explorer E20: our take
BWT RC50 and Dolphin Explorer E20 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
BWT RC50 is intended for inground pools, while Dolphin Explorer E20 is intended for inground and above-ground pools. Dolphin Explorer E20 has a published maximum pool length of 33 ft; the other model does not have a verified length in our source material. BWT RC50 cleans floor; Dolphin Explorer E20 cleans floor and walls. BWT RC50 lists 2 active brushes. Dolphin Explorer E20 lists 1 active brush and Dual DC motors.
Filtration and debris
Dolphin Explorer E20 has documented included filtration—Basket—while the other model's included media is not fully published. Dolphin Explorer E20 has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
BWT RC50 provides no fully published timer, app or remote specification; Dolphin Explorer E20 provides one-touch starts and power-supply controls.
Price, warranty and the decision
BWT RC50 is listed at $1,399 and Dolphin Explorer E20 at $699; Dolphin Explorer E20 is $700 less. BWT RC50 lists a 3-year warranty compared with 2 years for Dolphin Explorer E20. BWT RC50 and Dolphin Explorer E20 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
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 | BWT RC50 | Dolphin Explorer E20 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | No | YesEdge |
| Scrubs the waterline | No | No |
| Fine-debris filter included | No | No |
| Large-debris filter | No | YesEdge |
| Automatic scheduling | Not listed | No |
| Smartphone app | Not listed | No |
| Anti-tangle swivel | Not listed | Not listed |
| 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 BWT RC50 stands out
BWT RC50 is the better fit for inground pools that need floor cleaning.
- Uses 2 active brushes instead of 1
- Carries a 3-year warranty instead of 2 years
Where Dolphin Explorer E20 stands out
Dolphin Explorer E20 is the better fit for shoppers prioritizing the lower $699 starting price.
- Adds wall climbing and scrubbing
- Includes a large-debris bin or bag for leaves
- Is listed $700 lower
BWT RC50 vs Dolphin Explorer E20 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 | BWT RC50 | Dolphin Explorer E20 |
|---|---|---|
| Best fit | Inground pools that need floor cleaning. | Inground and above-ground pools up to 33 ft that need floor and wall cleaning. |
| Starting price | $1,399 | $699 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Not listed | Up to 33 ft |
| Cleaning coverage | Floor | Floor, Walls |
| Power | Not listed | Corded |
| Filtration | Not listed | Basket |
| Scheduling | Not listed | One-touch start |
| App and remote | Not listed | Power-supply controls |
| Cable | Not listed | 40 ft |
| Robot weight | Not listed | 14.5 lb |
| Warranty | 3 years | 2 years |
Consider the stronger Pool Express option
BWT RC50 and Dolphin Explorer E20 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
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