Help me choose
A stronger Pool Express option
Dolphin Explorer E40 and Polaris 9300 Sport Pool Cleaner F9300 are compared feature by feature below. For a stronger Pool Express option, consider Clear S. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Explorer
Dolphin Explorer E40
Inground pools up to 50 ft that need floor cleaning.
Polaris
Polaris 9300 Sport Pool Cleaner F9300
Pools that need floor cleaning.
What we recommend instead
Clear S
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,749
Buy Clear SDolphin Explorer E40 or Polaris 9300 Sport Pool Cleaner F9300: our take
Dolphin Explorer E40 and Polaris 9300 Sport Pool Cleaner F9300 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 Explorer E40 has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Each cleans floor, so coverage alone does not separate them.
Filtration and debris
The available manufacturer records do not fully identify the filter media supplied with either robot, so filtration should be confirmed before ordering.
Controls and day-to-day ownership
Dolphin Explorer E40 provides no fully published timer, app or remote specification; Polaris 9300 Sport Pool Cleaner F9300 provides daily scheduling.
Price, warranty and the decision
Dolphin Explorer E40 is listed at $1,599 and Polaris 9300 Sport Pool Cleaner F9300 at $1,393.60; Polaris 9300 Sport Pool Cleaner F9300 is $205.40 less. Dolphin Explorer E40 and Polaris 9300 Sport Pool Cleaner F9300 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Clear S. 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 Explorer E40 | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | No | No |
| Scrubs the waterline | No | No |
| Fine-debris filter included | No | No |
| Large-debris filter | No | No |
| Automatic scheduling | Not listed | Yes |
| Smartphone app | Not listed | Not listed |
| Anti-tangle swivel | Not listed | Not listed |
| 3-year warranty | Yes | Not listed |
| No recharging between cycles | Not listed | 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 Explorer E40 stands out
Dolphin Explorer E40 is the better fit for inground pools up to 50 ft that need floor cleaning.
- 3-year warranty
- For pools up to 50 ft
Where Polaris 9300 Sport Pool Cleaner F9300 stands out
Polaris 9300 Sport Pool Cleaner F9300 is the better fit for shoppers prioritizing the lower $1,393.60 starting price.
- Is listed $205.40 lower
- 60 ft cable
Dolphin Explorer E40 vs Polaris 9300 Sport Pool Cleaner F9300 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 Explorer E40 | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor cleaning. | Pools that need floor cleaning. |
| Starting price | $1,599 | $1,393.60 |
| Pool type | Inground | Not listed |
| Maximum pool length | Up to 50 ft | Not listed |
| Cleaning coverage | Floor | Floor |
| Power | Not listed | Corded |
| Filtration | Not listed | Not listed |
| Scheduling | Not listed | Daily schedule |
| App and remote | Not listed | Not listed |
| Cable | Not listed | 60 ft |
| Robot weight | Not listed | 18 lb |
| Warranty | 3 years | Not listed |
Consider the stronger Pool Express option
Dolphin Explorer E40 and Polaris 9300 Sport Pool Cleaner F9300 are compared feature by feature below. For a stronger Pool Express option, consider Clear S. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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