Our Test Results
How the Dolphin S100 Scored
Highlights
Key Features
Easy Access Filter
Top-load filter access for easy and convenient debris removal and cleaning
Super Scrub
Intense scrubbing-power of pool surfaces, providing thorough cleaning
Wall Climbing
Provides floor and wall coverage, making your whole pool exceptionally clean
Plug'n'Play
Just plug it in, drop into the pool, for an Easy clean
Energy Saver
Reduces water, chemical, and energy usage with every pool cleaning
What features does it have?
The Dolphin S100 steps up from the entry-level models with true wall-climbing coverage, making it a solid pick for small to mid-size pools in 2026. Here's an honest look at what it offers and where it falls short.
Wall Climbing
Clean like a pro. With wall coverage, the Dolphin S100 can clean and scale your walls with precision and power. While Wall Climbing is a great feature, don't get this confused with the superior waterline cleaning feature.
What is Dolphin S100 missing?
Waterline Cleaning
Dolphin S100 does not included waterline cleaning. Not only is this an essential feature that you'll want when looking for a pool robot, but one you will likely need. Waterline cleaning enables the robot to climb and reach the dirtest part of your swimming pool. Without this feature, you'll still need to manually clean your waterline by hand with a brush to prevent any algae or scum that builds up. It is one feature that you'll need that is not included with the Dolphin S100.
Leaf Bag
With leaves being a common issue, it would be safe to assume most pool robots utilize a leaf bag. Well, no so fast. Nearly every robotic pool cleaner is missing a leaf bag, except the Dolphin Premier. If you have a lot of leaves, this is the best pool robot for leaves. Not to mention the Premier's 3 year warranty, Dual Commercial Motors, and Multi-Media™ make it one of the best models available.
One thing to note: the S100 relies on standard filters and isn't part of the premium lineup. It does not come with NanoFilters for fine-particle filtration or ProLine commercial-grade motors. Owners who want stronger cleaning power and finer filtration should look at a ProLine model like the Dolphin Premier or a Max-Series cleaner.
What's included with the Dolphin S100?
The Dolphin S100 includes everything you'll need. Here is what is included with the unit:
- Dolphin S100 Unit
- 50 ft Cord
- Programmable Weekly Timer
- Standard Filters
- 2 Year Warranty
How to set up the Dolphin S100
Simply plug and play. All robotic pool cleaners are ready to go right out of the box. No booster pump or assembly needed. The S100 has everything needed to get started in its box. It's that easy.
Comparing S-series models? Read our Dolphin S50 review and Dolphin S200 review, or step up to the flagship Dolphin Premier review.
Why Poolbots?
No one knows robotic pool cleaners better than us. With over 25 years in the swimming pool industry and as a Dolphin Authorized Dealer, every robot we sell is backed by the full, non-prorated manufacturer's warranty — never a reduced or prorated version. Every order ships free, and is protected by our 30-Day Trial with NO restocking fee, ever, so you can put it to work in your own pool completely risk-free.
Ready to buy, or want a second opinion first? See how the best robots compare or contact our pool experts — we'll help you pick the perfect cleaner and ship it straight to your door.
Dolphin S100 Specifications
| Waterline Cleaning | No |
|---|---|
| Wall Climbing | Yes |
| Dual Stabilizer | No |
| Number of Motors | 2 |
| Gallons Filtered Per Hour | 4000 GPH |
| Filter Types | Top Access |
| Pool Coverage | Floor and Walls |
| Pool Types | In Ground |
| Pool Size | 33 ft |
| Pool Shapes | Rectangle, Oval, or Freeform |
| Pool Surfaces | Gunite, Fiberglass, Vinyl, Liner |
| Cable Length | 50 ft |
| Anti-Tangle Swivel | No |
| Obstacle Avoidance | Steps, Ladder, Drain Cover, Ledges, Pop-Ups |
| Warranty | 2 Years |
| Brand | Dolphin |
| Manufacturer | Maytronics |
| Part Number | 99996121-USF |
Compare Dolphin S100
See how the Dolphin S100 stacks up against the closest models by price — compare pool fit, key features, and the standout benefits of each. Want a full breakdown? Use the head-to-head links below, or chat with our pool experts.
|
Dolphin S100
$879 |
Dolphin Escape
$669$999Save $330Max-Series |
Dolphin Cayman
$1079$1299Save $220Max-Series |
Dolphin Quantum
$1549$1799Save $250Pro Line |
Clear S
$1749$2749Save $1000Clear Series | |
|---|---|---|---|---|---|
| Pool Type | In Ground | Above Ground | In Ground & Above Ground | In Ground | In Ground |
| Max Pool Size | 33 ft | 33 ft | 33 ft | 50 ft | 50 ft |
| Cleaning Coverage | Floor and Walls | Floor | Floor, Walls | Floor, Walls, Waterline, Ledges, Steps | Floor, Walls, Waterline |
| Wall Climbing | |||||
| Weekly Timer | |||||
| Top Reasons to Buy |
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| Head-to-Head | You're here | Compare → | Compare → | Compare → | — |
| Shop | Shop | Shop | Shop | Shop |
Read Our Reviews
Learn more about the Dolphin S100 on our review. Our in-depth pool robot reviews are written by our pool experts and will help you make an informed decision when purchasing a robotic pool cleaner for your pool. Read the Dolphin S100 Review or browser other top robotic pool cleaner reviews.
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What’s Next?
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