Help me choose
A stronger Pool Express option
Dolphin Active 15 and Dolphin EON 120d 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.
Active
Dolphin Active 15
Inground and above-ground pools up to 33 ft that need floor and wall cleaning, with fine debris.
EON
Dolphin EON 120d
Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with minimal filter maintenance and a three-year warranty.
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 Active 15 or Dolphin EON 120d: our take
Dolphin Active 15 and Dolphin EON 120d 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
Both robots are intended for inground and above-ground pools. Dolphin Active 15 is rated for pools up to 33 ft; Dolphin EON 120d is rated up to 50 ft. Dolphin Active 15 cleans floor and walls; Dolphin EON 120d cleans floor, walls, and waterline. Dolphin Active 15 lists 1 active brush. Dolphin EON 120d lists SmartMap navigation.
Filtration and debris
Both models include Basket and UltraFilter. Both have documented fine-debris media, so basket capacity and ease of cleaning matter more than fine-particle capability.
Controls and day-to-day ownership
Dolphin Active 15 provides a weekly timer and power-supply controls; Dolphin EON 120d provides a weekly timer and smartphone control. Dolphin Active 15 uses a 40 ft corded cable, while Dolphin EON 120d uses cordless battery power. Dolphin Active 15 is listed at 14 lb versus 24.3 lb for Dolphin EON 120d; that 10.3 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Active 15 lists a 2-year warranty compared with 3 years for Dolphin EON 120d. Dolphin Active 15 and Dolphin EON 120d 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 Active 15 | Dolphin EON 120d |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | Yes | Yes |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | Not listed | Not listed |
| 3-year warranty | No | YesEdge |
| No recharging between cycles | YesEdge | No |
| 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 Active 15 stands out
Dolphin Active 15 is the better fit for inground and above-ground pools up to 33 ft that need floor and wall cleaning, with fine debris.
- Runs from continuous plug-in power without a recharge between cycles
- Weighs 14 lb versus 24.3 lb
Where Dolphin EON 120d stands out
Dolphin EON 120d 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
- Adds smartphone control
- Carries a 3-year warranty instead of 2 years
- Is rated for pools up to 50 ft
Dolphin Active 15 vs Dolphin EON 120d 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 Active 15 | Dolphin EON 120d |
|---|---|---|
| Best fit | Inground and above-ground pools up to 33 ft that need floor and wall cleaning, with fine debris. | Inground and above-ground pools up to 50 ft that need whole-pool cordless cleaning with minimal filter maintenance and a three-year warranty. |
| Starting price | $849 | See product |
| Pool type | Inground, Above-ground | Inground, Above-ground |
| Maximum pool length | Up to 33 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls | Floor, Walls, Waterline |
| Power | Corded | Cordless |
| Filtration | Basket, UltraFilter | Basket, UltraFilter |
| Scheduling | Weekly schedule | Weekly schedule + app |
| App and remote | Power-supply controls | App control |
| Cable | 40 ft | Cordless |
| Robot weight | 14 lb | 24.3 lb |
| Warranty | 2 years | 3 years |
Consider the stronger Pool Express option
Dolphin Active 15 and Dolphin EON 120d 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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