Help me choose
A stronger Pool Express option
Dolphin Nautilus EON 100 and Dolphin T15 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.
EON
Dolphin Nautilus EON 100
Inground and above-ground pools up to 50 ft with steps, benches or tanning ledges that need whole-pool cordless cleaning.
What we recommend instead
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
$1,079
Buy Dolphin CaymanDolphin Nautilus EON 100 or Dolphin T15: our take
Dolphin Nautilus EON 100 and Dolphin T15 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 EON 100 is intended for inground and above-ground pools, while Dolphin T15 is intended for above-ground pools. Dolphin Nautilus EON 100 is rated for pools up to 50 ft; Dolphin T15 is rated up to 30 ft. Dolphin Nautilus EON 100 cleans floor, walls, and waterline; Dolphin T15 cleans floor. Dolphin Nautilus EON 100 lists 2 active brushes and SmartMap navigation. Dolphin T15 lists 1 active brush.
Filtration and debris
Both models include Basket.
Controls and day-to-day ownership
Dolphin Nautilus EON 100 provides a weekly timer and smartphone control; Dolphin T15 provides one-touch starts and power-supply controls. Dolphin Nautilus EON 100 uses cordless battery power, while Dolphin T15 uses a 40 ft corded cable. Dolphin Nautilus EON 100 is listed at 22.1 lb versus 14 lb for Dolphin T15; that 8.100000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Nautilus EON 100 is listed at $899 and Dolphin T15 at $649; Dolphin T15 is $250 less. Dolphin Nautilus EON 100 lists a 1-year warranty compared with 2 years for Dolphin T15. Dolphin Nautilus EON 100 and Dolphin T15 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 Nautilus EON 100 | Dolphin T15 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| 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 | Not listed |
| 3-year warranty | No | 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 Nautilus EON 100 stands out
Dolphin Nautilus EON 100 is the better fit for owners who value cordless handling more than automatic scheduling and continuous power.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Uses 2 active brushes instead of 1
- Can start on a weekly schedule without a manual launch before every cycle
- Adds smartphone control
Where Dolphin T15 stands out
Dolphin T15 is the better fit for shoppers prioritizing the lower $649 starting price.
- Carries a 2-year warranty instead of 1 years
- Runs from continuous plug-in power without a recharge between cycles
- Is listed $250 lower
- Weighs 14 lb versus 22.1 lb
Dolphin Nautilus EON 100 vs Dolphin T15 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 EON 100 | Dolphin T15 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 50 ft with steps, benches or tanning ledges that need whole-pool cordless cleaning. | Above-ground pools up to 30 ft that need floor cleaning. |
| Starting price | $899 | $649 |
| Pool type | Inground, Above-ground | Above-ground |
| Maximum pool length | Up to 50 ft | Up to 30 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor |
| Power | Cordless | Corded |
| Filtration | Basket | Basket |
| Scheduling | Weekly schedule + app | One-touch start |
| App and remote | App control | Power-supply controls |
| Cable | Cordless | 40 ft |
| Robot weight | 22.1 lb | 14 lb |
| Warranty | 1 years | 2 years |
Consider the stronger Pool Express option
Dolphin Nautilus EON 100 and Dolphin T15 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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