Robotic pool cleaner comparison

Blue Helix One vs Dolphin Premium 40

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

Blue Helix One 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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Blue Helix

Blue Helix One

Inground pools that need floor, wall and waterline cleaning.

Listed price $579

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Premium

Dolphin Premium 40

Inground pools up to 50 ft that need floor, wall and waterline cleaning with app scheduling and a caddy.

Listed price $1,629

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

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Buying guidance

Blue Helix One or Dolphin Premium 40: our take

Blue Helix One 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

Both robots are intended for inground pools. Dolphin Premium 40 has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Premium 40's documented cleaning system includes 2 active brushes and CleverClean navigation.

Filtration and debris

Blue Helix One 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

Both models provide a weekly timer and smartphone control. Both use continuous corded power.

Price, warranty and the decision

Blue Helix One is listed at $579 and Dolphin Premium 40 at $1,629; Blue Helix One is $1,050 less. Each lists a 2-year manufacturer warranty. Blue Helix One 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	Blue Helix One	Dolphin Premium 40
Cleans the pool floor	Yes	Yes
Climbs and cleans walls	Yes	Yes
Scrubs the waterline	Yes	Yes
Fine-debris filter included	No	YesEdge
Large-debris filter	Yes	Yes
Automatic scheduling	Yes	Yes
Smartphone app	Yes	Yes
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 Blue Helix One stands out

Blue Helix One is the better fit for shoppers prioritizing the lower $579 starting price.

Is listed $1,050 lower
Corded, plug-in power supply

Where Dolphin Premium 40 stands out

Dolphin Premium 40 is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning with app scheduling and a caddy.

Includes filtration for sand, pollen and other fine debris
2-hour cycle, pools up to 50 ft