Help me choose
A stronger Pool Express option
Dolphin Liberty 400 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.
Liberty
Dolphin Liberty 400
Inground and above-ground pools up to 33 ft that need floor, wall and waterline cleaning without a cord.
Triton
Dolphin Triton PS
Inground pools up to 50 ft that need floor, wall and waterline cleaning.
What we recommend instead
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumDolphin Liberty 400 or Dolphin Triton PS: our take
Dolphin Liberty 400 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 Liberty 400 is intended for inground and above-ground pools, while Dolphin Triton PS is intended for inground pools. Dolphin Liberty 400 is rated for pools up to 33 ft; Dolphin Triton PS is rated up to 50 ft. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Triton PS's documented cleaning system includes 1 active brush.
Filtration and debris
Dolphin Liberty 400 includes Basket and UltraFilter; Dolphin Triton PS includes Basket. That gives Dolphin Liberty 400 the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Liberty 400 provides a weekly timer and smartphone control; Dolphin Triton PS provides a weekly timer and power-supply controls. Dolphin Liberty 400 uses cordless battery power, while Dolphin Triton PS uses a 60 ft corded cable with an anti-tangle swivel.
Price, warranty and the decision
Dolphin Liberty 400 is listed at $1,429 and Dolphin Triton PS at $1,099; Dolphin Triton PS is $330 less. Dolphin Liberty 400 lists a 3-year warranty compared with 2 years for Dolphin Triton PS. Dolphin Liberty 400 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 Liberty 400 | Dolphin Triton PS |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | YesEdge | No |
| Anti-tangle swivel | Not listed | Yes |
| 3-year warranty | YesEdge | No |
| No recharging between cycles | No | YesEdge |
| 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 Liberty 400 stands out
Dolphin Liberty 400 is the better fit for owners who value cordless handling more than automatic scheduling and continuous power.
- Includes filtration for sand, pollen and other fine debris
- Adds smartphone control
- Carries a 3-year warranty instead of 2 years
Where Dolphin Triton PS stands out
Dolphin Triton PS is the better fit for shoppers prioritizing the lower $1,099 starting price.
- Is rated for pools up to 50 ft
- Runs from continuous plug-in power without a recharge between cycles
- Is listed $330 lower
Dolphin Liberty 400 vs Dolphin Triton PS 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 Liberty 400 | Dolphin Triton PS |
|---|---|---|
| Best fit | Inground and above-ground pools up to 33 ft that need floor, wall and waterline cleaning without a cord. | Inground pools up to 50 ft that need floor, wall and waterline cleaning. |
| Starting price | $1,429 | $1,099 |
| Pool type | Inground, Above-ground | Inground |
| Maximum pool length | Up to 33 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Cordless | Corded |
| Filtration | Basket, UltraFilter | Basket |
| Scheduling | Weekly schedule + app | Weekly schedule |
| App and remote | App control | Power-supply controls |
| Cable | Cordless | 60 ft with anti-tangle swivel |
| Robot weight | 17.9 lb | Not listed |
| Warranty | 3 years | 2 years |
Consider the stronger Pool Express option
Dolphin Liberty 400 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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