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Robotic pool cleaner comparison

Dolphin Explorer E40 vs Dolphin W20

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

Dolphin Explorer E40 Dolphin W20
Choose by pool type

Residential and commercial pools need different robots

Dolphin Explorer E40 and Dolphin W20 serve different kinds of pools, so there is no honest one-size-fits-all winner. Choose Dolphin Cayman for residential use. Choose Dolphin Wave 60 for commercial use.

Right robot for each job

Choose residential and commercial cleaners separately

Buying guidance

Dolphin Explorer E40 or Dolphin W20: our take

Dolphin Explorer E40 and Dolphin W20 can be compared on specifications, but they are designed for different jobs. Start with residential versus commercial use, then use the details below to understand the tradeoffs.

Pool fit and cleaning reach

Dolphin Explorer E40 is intended for inground pools, while Dolphin W20 is intended for commercial pools. Dolphin Explorer E40 has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Dolphin Explorer E40 cleans floor; Dolphin W20 cleans floor, walls, and waterline. Dolphin W20's documented cleaning system includes Commercial-grade motors.

Filtration and debris

The available manufacturer records do not fully identify the filter media supplied with either robot, so filtration should be confirmed before ordering.

Controls and day-to-day ownership

Both models provide no fully published timer, app or remote specification.

Price, warranty and the decision

Dolphin Explorer E40 is listed at $1,599 and Dolphin W20 at $1,999; Dolphin Explorer E40 is $400 less. Each lists a 3-year manufacturer warranty. These robots are built for different jobs, so pool type and facility capacity decide the comparison before individual features do. For a residential pool, the Pool Express pick is Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning. For a commercial facility, the Pool Express pick is Dolphin Wave 60. Commercial pools up to 50 ft that need floor, wall and waterline 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 Dolphin Explorer E40 Dolphin W20
Cleans the pool floor Yes Yes
Climbs and cleans walls No YesEdge
Scrubs the waterline No YesEdge
Fine-debris filter included No No
Large-debris filter No No
Automatic scheduling Not listed Not listed
Smartphone app Not listed Not listed
Anti-tangle swivel Not listed Not listed
3-year warranty Yes Yes
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 shoppers prioritizing the lower $1,599 starting price.

  • Is listed $400 lower
  • Cleans the pool floor

Where Dolphin W20 stands out

Dolphin W20 is the better fit for commercial pools that need floor, wall and waterline cleaning.

  • Cleans the floor, walls and waterline instead of stopping below the tile line
  • Cleans floor, walls and waterline

Dolphin Explorer E40 vs Dolphin W20 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 W20
Best fit Inground pools up to 50 ft that need floor cleaning. Commercial pools that need floor, wall and waterline cleaning.
Starting price $1,599 $1,999
Pool type Inground Commercial
Maximum pool length Up to 50 ft Not listed
Cleaning coverage Floor Floor, Walls, Waterline
Power Not listed Corded
Filtration Not listed Not listed
Scheduling Not listed Not listed
App and remote Not listed Not listed
Cable Not listed Not listed
Robot weight Not listed Not listed
Warranty 3 years 3 years
Final call

Choose for the pool you operate

Dolphin Explorer E40 and Dolphin W20 serve different kinds of pools, so there is no honest one-size-fits-all winner. Choose Dolphin Cayman for residential use. Choose Dolphin Wave 60 for commercial use.

Keep comparing without rebuilding the same specification table yourself.