Help me choose
A stronger Pool Express option
Dolphin Premium 10 and Dolphin T55i 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.
Premium
Dolphin Premium 10
Above-ground and small inground pools up to 30 ft that need the floor vacuumed.
T-Line
Dolphin T55i
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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 Premium 10 or Dolphin T55i: our take
Dolphin Premium 10 and Dolphin T55i 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 Premium 10 is intended for inground and above-ground pools, while Dolphin T55i is intended for inground pools. Dolphin Premium 10 is rated for pools up to 30 ft; Dolphin T55i is rated up to 50 ft. Dolphin Premium 10 cleans floor; Dolphin T55i cleans floor, walls, and waterline. Dolphin Premium 10's documented cleaning system includes 1 active brush and CleverClean navigation.
Filtration and debris
Dolphin Premium 10 includes Basket; Dolphin T55i includes Basket and UltraFilter. Dolphin T55i has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Premium 10 provides one-touch starts and power-supply controls; Dolphin T55i provides a weekly timer, smartphone control, and included remote control. Dolphin Premium 10 uses continuous corded power, while Dolphin T55i uses a 60 ft corded cable with an anti-tangle swivel.
Price, warranty and the decision
Dolphin Premium 10 is listed at $719 and Dolphin T55i at $1,699; Dolphin Premium 10 is $980 less. Each lists a 2-year manufacturer warranty. Dolphin Premium 10 and Dolphin T55i 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 Premium 10 | Dolphin T55i |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | No | YesEdge |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | No | YesEdge |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | No | YesEdge |
| 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 Premium 10 stands out
Dolphin Premium 10 is the better fit for shoppers prioritizing the lower $719 starting price.
- Is listed $980 lower
- Cleans the pool floor
Where Dolphin T55i stands out
Dolphin T55i is the better fit for pools up to 50 ft.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Includes filtration for sand, pollen and other fine debris
- Can start on a weekly schedule without a manual launch before every cycle
- Adds smartphone control
Dolphin Premium 10 vs Dolphin T55i 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 Premium 10 | Dolphin T55i |
|---|---|---|
| Best fit | Above-ground and small inground pools up to 30 ft that need the floor vacuumed. | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. |
| Starting price | $719 | $1,699 |
| Pool type | Inground, Above-ground | Inground |
| Maximum pool length | Up to 30 ft | Up to 50 ft |
| Cleaning coverage | Floor | Floor, Walls, Waterline |
| Power | Corded | Corded |
| Filtration | Basket | Basket, UltraFilter |
| Scheduling | One-touch start | Weekly schedule + app |
| App and remote | Power-supply controls | App + included remote |
| Cable | Not listed | 60 ft with anti-tangle swivel |
| Robot weight | 14.6 lb | Not listed |
| Warranty | 2 years | 2 years |
Consider the stronger Pool Express option
Dolphin Premium 10 and Dolphin T55i 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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