Help me choose
A stronger Pool Express option
Dolphin Nautilus CC Supreme and Dolphin Premium 20 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.
Nautilus
Dolphin Nautilus CC Supreme
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Premium
Dolphin Premium 20
Inground and above-ground pools up to 33 ft that need floor and wall 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 Nautilus CC Supreme or Dolphin Premium 20: our take
Dolphin Nautilus CC Supreme and Dolphin Premium 20 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 Nautilus CC Supreme is intended for inground pools, while Dolphin Premium 20 is intended for inground and above-ground pools. Dolphin Nautilus CC Supreme is rated for pools up to 50 ft; Dolphin Premium 20 is rated up to 33 ft. Dolphin Nautilus CC Supreme cleans floor, walls, and waterline; Dolphin Premium 20 cleans floor and walls. Dolphin Nautilus CC Supreme lists 2 active brushes and CleverClean navigation. Dolphin Premium 20 lists 1 active brush and CleverClean navigation.
Filtration and debris
Dolphin Nautilus CC Supreme includes Standard filter and UltraFilter; Dolphin Premium 20 includes Basket. That gives Dolphin Nautilus CC Supreme the clearer documented edge for fine silt, pollen and sand. Dolphin Premium 20 has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Nautilus CC Supreme provides a weekly timer, smartphone control, and included remote control; Dolphin Premium 20 provides one-touch starts and power-supply controls. Dolphin Nautilus CC Supreme uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin Premium 20 uses continuous corded power.
Price, warranty and the decision
Dolphin Nautilus CC Supreme is listed at $1,599 and Dolphin Premium 20 at $899; Dolphin Premium 20 is $700 less. Dolphin Nautilus CC Supreme lists a 3-year warranty compared with 2 years for Dolphin Premium 20. Dolphin Nautilus CC Supreme and Dolphin Premium 20 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 Nautilus CC Supreme | Dolphin Premium 20 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | YesEdge | No |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | No | YesEdge |
| Automatic scheduling | YesEdge | No |
| Smartphone app | YesEdge | No |
| Anti-tangle swivel | YesEdge | No |
| 3-year warranty | YesEdge | 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 Nautilus CC Supreme stands out
Dolphin Nautilus CC Supreme 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
- Uses 2 active brushes instead of 1
- Can start on a weekly schedule without a manual launch before every cycle
Where Dolphin Premium 20 stands out
Dolphin Premium 20 is the better fit for shoppers prioritizing the lower $899 starting price.
- Includes a large-debris bin or bag for leaves
- Is listed $700 lower
Dolphin Nautilus CC Supreme vs Dolphin Premium 20 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 Nautilus CC Supreme | Dolphin Premium 20 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. | Inground and above-ground pools up to 33 ft that need floor and wall cleaning. |
| Starting price | $1,599 | $899 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Up to 33 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls |
| Power | Corded | Corded |
| Filtration | Standard filter, UltraFilter | Basket |
| Scheduling | Weekly schedule + app | One-touch start |
| App and remote | App + included remote | Power-supply controls |
| Cable | 60 ft with anti-tangle swivel | Not listed |
| Robot weight | Not listed | 14.6 lb |
| Warranty | 3 years | 2 years |
Consider the stronger Pool Express option
Dolphin Nautilus CC Supreme and Dolphin Premium 20 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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