Robotic pool cleaner comparison

Dolphin Echo vs Dolphin Nautilus AG

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 Echo and Dolphin Nautilus AG 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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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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Nautilus

Dolphin Nautilus AG

Above-ground and small inground pools up to 30 ft that need the floor vacuumed.

Listed price $568

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A better alternative

What we recommend instead

Pool Express pick

Dolphin Cayman

Inground and above-ground pools up to 40 ft that need floor and wall cleaning.

$1,079

Buy Dolphin Cayman

Buying guidance

Dolphin Echo or Dolphin Nautilus AG: our take

Dolphin Echo and Dolphin Nautilus AG 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 Echo is intended for inground and above-ground pools, while Dolphin Nautilus AG is intended for above-ground pools. Dolphin Echo is rated for pools up to 33 ft; Dolphin Nautilus AG is rated up to 30 ft. Dolphin Echo cleans floor and walls; Dolphin Nautilus AG cleans floor. 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

Both models provide one-touch starts and power-supply controls. Both use continuous corded power. Dolphin Echo is listed at 14.8 lb versus 14.6 lb for Dolphin Nautilus AG; that 0.20000000000000107 lb difference matters when lifting the robot from the pool.

Price, warranty and the decision

Dolphin Echo is listed at $749 and Dolphin Nautilus AG at $568; Dolphin Nautilus AG is $181 less. Dolphin Echo lists a 2-year warranty compared with 1 years for Dolphin Nautilus AG. Dolphin Echo and Dolphin Nautilus AG 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	Dolphin Echo	Dolphin Nautilus AG
Cleans the pool floor	Yes	Yes
Climbs and cleans walls	YesEdge	No
Scrubs the waterline	No	No
Fine-debris filter included	No	No
Large-debris filter	Yes	Yes
Automatic scheduling	No	No
Smartphone app	No	No
Anti-tangle swivel	No	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 Dolphin Echo stands out

Dolphin Echo is the better fit for pools up to 33 ft.

Adds wall climbing and scrubbing
Carries a 2-year warranty instead of 1 years
Is rated for pools up to 33 ft

Where Dolphin Nautilus AG stands out

Dolphin Nautilus AG is the better fit for shoppers prioritizing the lower $568 starting price.

Is listed $181 lower
Weighs 14.6 lb versus 14.8 lb