Dolphin S300 Review

What features does it have?

The Dolphin S300 builds on the S-series with strong wall climbing and weekly scheduling, making automated cleaning effortless in 2026. Let's break down its features and the gaps worth knowing about.

Wall Climbing

Clean like a pro. With wall coverage, the Dolphin S300 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 S300 missing?

Waterline Cleaning

Dolphin S300 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 S300.

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.

A quick note before you buy: the S300 does not include NanoFilters or ProLine commercial-grade motors. For the finest filtration and the most powerful clean, the ProLine family — including the Dolphin Premier — and the Max-Series are the way to go. See the full comparison in our best robotic pool cleaners guide.

What's included with the Dolphin S300?

The Dolphin S300 includes everything you'll need. Here is what is included with the unit:

• Dolphin S300 Unit
• 60 ft Cord with Anti-Tangle Swivel
• Programmable Weekly Timer
• Standard Filters
• 2 Year Warranty

How to set up the Dolphin S300

Simply plug and play. All robotic pool cleaners are ready to go right out of the box. No booster pump or assembly needed. The S300 has everything needed to get started in its box. It's that easy.

Comparing S-series models? Read our Dolphin S200 review and Dolphin S400 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.

Still deciding, or ready to order? Our pool experts are standing by to help you choose the perfect cleaner — compare the top models or reach out today, and we'll get the right robot shipping to your door.