Robotic pool cleaner comparison

Blue Helix One vs Dolphin Echo

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 Echo 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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Echo

Dolphin Echo

Inground and above-ground pools up to 33 ft that need floor and wall cleaning with the least fuss.

Listed price $749

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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

Blue Helix One or Dolphin Echo: our take

Blue Helix One and Dolphin Echo 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

Blue Helix One is intended for inground pools, while Dolphin Echo is intended for inground and above-ground pools. Dolphin Echo has a published maximum pool length of 33 ft; the other model does not have a verified length in our source material. Blue Helix One cleans floor, walls, and waterline; Dolphin Echo cleans floor and walls. Dolphin Echo's documented cleaning system includes 1 active brush and CleverClean navigation.

Filtration and debris

Both models include Basket.

Controls and day-to-day ownership

Blue Helix One provides a weekly timer and smartphone control; Dolphin Echo provides one-touch starts and power-supply controls. Both use continuous corded power.

Price, warranty and the decision

Blue Helix One is listed at $579 and Dolphin Echo at $749; Blue Helix One is $170 less. Each lists a 2-year manufacturer warranty. Blue Helix One and Dolphin Echo 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 Echo
Cleans the pool floor	Yes	Yes
Climbs and cleans walls	Yes	Yes
Scrubs the waterline	YesEdge	No
Fine-debris filter included	No	No
Large-debris filter	Yes	Yes
Automatic scheduling	YesEdge	No
Smartphone app	YesEdge	No
Anti-tangle swivel	Not listed	No
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.

Cleans the floor, walls and waterline instead of stopping below the tile line
Can start on a weekly schedule without a manual launch before every cycle
Adds smartphone control
Is listed $170 lower

Where Dolphin Echo stands out

Dolphin Echo is the better fit for inground and above-ground pools up to 33 ft that need floor and wall cleaning with the least fuss.

Cleans floor and walls
2-hour cycle, 33 ft pools