Robotic pool cleaner comparison

Dolphin S100 vs Dolphin Triton PS

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

By Brian Williamson, Pool Express product specialist
Updated November 9, 2026

Better alternative

A stronger Pool Express option

Dolphin S100 and Dolphin Triton PS 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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S-Line

Dolphin S100

Inground and above-ground pools up to 33 ft that need floor and wall cleaning, with fine debris.

Listed price $849

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Triton

Dolphin Triton PS

Inground pools up to 50 ft that need floor, wall and waterline cleaning.

Listed price $1,099

View better alternatives

A better alternative

What we recommend instead

Pool Express pick

Dolphin Quantum

Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

$1,649

Buy Dolphin Quantum

Buying guidance

Dolphin S100 or Dolphin Triton PS: our take

Dolphin S100 and Dolphin Triton PS 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 S100 is intended for inground and above-ground pools, while Dolphin Triton PS is intended for inground pools. Dolphin S100 is rated for pools up to 33 ft; Dolphin Triton PS is rated up to 50 ft. Dolphin S100 cleans floor and walls; Dolphin Triton PS cleans floor, walls, and waterline. Dolphin S100's documented cleaning system includes 1 active brush.

Filtration and debris

Dolphin S100 includes Basket and UltraFilter; Dolphin Triton PS includes Basket. That gives Dolphin S100 the clearer documented edge for fine silt, pollen and sand.

Controls and day-to-day ownership

Both models provide a weekly timer and power-supply controls. Dolphin S100 uses a 50 ft corded cable, while Dolphin Triton PS uses a 60 ft corded cable with an anti-tangle swivel.

Price, warranty and the decision

Dolphin S100 is listed at $849 and Dolphin Triton PS at $1,099; Dolphin S100 is $250 less. Each lists a 2-year manufacturer warranty. Dolphin S100 and Dolphin Triton PS 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 S100	Dolphin Triton PS
Cleans the pool floor	Yes	Yes
Climbs and cleans walls	Yes	Yes
Scrubs the waterline	No	YesEdge
Fine-debris filter included	YesEdge	No
Large-debris filter	Yes	Yes
Automatic scheduling	Yes	Yes
Smartphone app	No	No
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 S100 stands out

Dolphin S100 is the better fit for shoppers prioritizing the lower $849 starting price.

Includes filtration for sand, pollen and other fine debris
Is listed $250 lower

Where Dolphin Triton PS stands out

Dolphin Triton PS is the better fit for pools up to 50 ft.

Cleans the floor, walls and waterline instead of stopping below the tile line
Is rated for pools up to 50 ft