Dolphin T55i Review

What features does it have?

The Dolphin T55i tops the T-series with wall climbing, weekly scheduling, and an anti-tangle swivel cord — a feature-rich yet value-minded cleaner for 2026. Here's what it brings to the table and what's missing.

Wall Climbing

Clean like a pro. With wall coverage, the Dolphin T55i 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 T55i missing?

Waterline Cleaning

Dolphin T55i 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 T55i.

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 last note: even as the top T-series model, the T55i uses standard filters — not NanoFilters — and it isn't a ProLine or Max-Series cleaner. If you want the finest filtration and most powerful motors on the market, step up to a ProLine cleaner such as the Dolphin Premier, or explore the Max-Series.

What's included with the Dolphin T55i?

The Dolphin T55i includes everything you'll need. Here is what is included with the unit:

• Dolphin T55i Unit
• 60 ft Cord with Anti-Tangle Swivel
• Programmable Weekly Timer
• Standard Filters
• 2 Year Warranty

How to set up the Dolphin T55i

Simply plug and play. All robotic pool cleaners are ready to go right out of the box. No booster pump or assembly needed. The T55i has everything needed to get started in its box. It's that easy.

Comparing T-series models? Read our Dolphin T45 review and Dolphin T35 review, or step up to the flagship Dolphin Quantum 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.