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Dolphin T55i

  • Waterline Scrubbing - Super efficient on vertical surfaces for optimal waterline scrubbing
  • Light Weight - Lightweight design for easy lifting and handling
  • Weekly scheduler - Customize your weekly schedule cleaning times to fit your needs
  • Easy Access Filter - Top-load filter access for easy and convenient debris removal and cleaning
  • Energy Saver - Reduces water, chemical, and energy usage with every pool cleaning

The Dolphin T55i offers waterline cleaning, weekly scheduling, and anti-tangle swivel capabilities, making it a versatile choice for inground pools up to 50 feet. While it includes features like top-load filter access and MyDolphin Plus app control, it lacks multiple filter choices, limiting its debris-handling versatility. The T55i is a solid mid-range option, but users seeking extensive customization and multiple cleaning modes may find better value in other models.

Shoppers ultimately bought... Compare vs.

Dolphin Sigma

Sigma adds waterline cleaning, NanoFilters™, triple motors, gyroscope, 3 year warranty + 30 Day Free Trial.

Dolphin Premier

Premier adds waterline cleaning, commercial grade motors, MultiMedia™, NanoFilters™, 3 year warranty + 30 Day Free Trial.


T55i Product Video

Try Risk-Free for 30 Days

Buy with Confidence

Try any robot in your pool risk-free for 30 days. We believe a pool robot is an investment, and we know you'll love it. Which is why we have a 30 Day Free Trial. If you don't love it, simply return the robot. Unlike the other guys, we never charge a restocking fee or any other fees - meaning no restocking fee ever.

Here at Poolbots, we carry only the top models for the top brands. All of our pool robots are backed by a full manufacturer's warranty - not prorated or limited to cycles like other pool robots.

T55i Accessories

Dolphin Universal Caddy

Easily transport your Dolphin T55i with the Dolphin Universal Caddy. Fits any Dolphin Robotic Pool Cleaner.

Dolphin T55i 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, Walls and Waterline
Pool Types In Ground
Pool Size 50 ft
Pool Shapes Rectangle, Oval, or Freeform
Pool Surfaces Gunite, Fiberglass, Vinyl, Liner
Cable Length 60 ft
Anti-Tangle Swivel Yes
Obstacle Avoidance Steps, Ladder, Drain Cover, Ledges, Pop-Ups
Warranty 2 Years
Brand Dolphin
Manufacturer Maytronics
Part Number 99996245-WINI

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Questions and Answers

Does Poolbots charge any restocking fees in your 30 Day Free Trial?

No, we never charge a restocking fee ever! We know a robotic pool cleaner is a big investment, which is why we offer Free 30-Day Trials on all robotic pool cleaners!

How long is the Dolphin T55i's warranty?

As a proud Authorized Dealer for Dolphin, the Dolphin T55i includes a full 2 year warranty from date of purchase.

Does Dolphin T55i need a booster pump to work?

No! The Dolphin T55i is plug and play! All you need to do is unbox the unit and plug it into an outlet. No setup or assembly required!

My Dolphin T55i gets stuck on drains, how can I fix this?

With a main drain clip on, you can successfully avoid the robot getting stuck on your drain.

Does the Dolphin T55i work with saltwater pools?

Yes. The Dolphin T55i works with all types of pools, including freshwater and saltwater.

What types of pools does the Dolphin T55i work with?

The Dolphin T55i is compatible with the following types of pools: In-ground pools, above-ground pools, gunite pools, tile pools, fiberglass pools, and viny pools of all shapes and sizes. If you have any questions or wonder if this is the right robot for you, contact us or view our Pool Robot Guide.

Does the Dolphin T55i have WiFi/Bluetooth?

Yes, the Dolphin T55i has wifi and bluetooth that allows you to connect and control the robot from the app.

Does the Dolphin T55i have an app?

Yes, the Dolphin T55i has an app to control the robot.

How long does Nautilus CC Plus run for?

The Dolphin T55i cleans for 1.5, 2 hours. You can set the robot to run daily via its included programmable timer.

How much does Dolphin T55i weigh?

The Dolphin T55i weighs 18.566 lb.

How does Dolphin T55i work?

The Dolphin T55i works as an automatic robotic pool cleaner. It will vacuum, scrub, and automate your pool cleaning. With a plug and play design, all you need is an outlet to plug it into and you’re good to go. No booster pump or assembly needed.

Does Dolphin T55i pick up leaves?

The Dolphin T55i can pick up leaves. While not as effective as the Dolphin Premier, which includes an oversized leaf bag.

Does Dolphin T55i pick up sand, algae, or small debris?

The Dolphin T55i cannot perform as well as robots with NanoFiltration. As the mesh filters on Dolphin T55i cannot capture small particles like the newer Gen-2 NanoFilters. See all robots with NanoFiltration here.

Does Dolphin T55i come with NanoFilters?

The Dolphin T55i does not have NanoFilters. See all robots with NanoFilters here.

Does Dolphin T55i clean waterline?

Yes, the Dolphin T55i cleans the waterline.

Does Dolphin T55i climb walls?

Yes, the Dolphin T55i cleans your entire pool - including the floor, walls, and waterline.

Can the Dolphin T55i be plugged into an extension cord?

Yes it can!

I can power my Dolphin T55i on but it does not move

If your Dolphin powers on but does not move, try checking the tracks for any debris or obstructions. Also, check the drive motor and impeller for any damage or wear. If you are still having issues, contact Maytronics customer support for further assistance.

My Dolphin T55i's power supply does not turn on when I press the power button

If your Dolphin's power supply is not turning on, check to make sure it is properly plugged in and that the outlet it is plugged into is working. If the power supply is still not turning on, contact Maytronics customer support for further assistance.

My Dolphin T55i is not cleaning the pool properly

If your Dolphin T55i is not cleaning the pool properly, try checking the filter bag for any debris or blockages. Also, check the brushes and tracks for any damage or wear. If you are still having issues, contact Maytronics customer support for further assistance.

What are the handles and the floats on my Dolphin for?

The handles on your Dolphin are for lifting and carrying the unit, while the floats are designed to help your Dolphin navigate around the pool and maintain proper buoyancy.

There seems to be something stuck in my Dolphin T55i's' tracks – how can I get it out?

To remove any debris or obstructions from your Dolphin's tracks, turn off the power supply and carefully remove the tracks from the unit. Use a soft brush or cloth to clean the tracks and remove any debris. Once clean, reattach the tracks to the unit.

The cord is connected to the robot's power unit, but the power unit LED indication is off.

If the power unit LED indication is off even when the charger is connected, please try the following steps: 1) Unplug the power supply from the outlet and wait for 10 seconds. 2) Plug the power supply back in and check if the LED indication turns on. 3) If the LED indication still does not turn on, contact Maytronics customer support for further assistance.

Why should I register my robot?

Registering your Dolphin robotic pool cleaner allows you to receive important product updates and notifications, as well as access to exclusive content and promotions.

What's Next?

Learn more about Nanofilters™, MaxBin™, and so much more to find which pool robot is right for you. Use our Pool Robot Selector to enter your pool type and find an exact match for your swimming pool's needs or read the Best Dolphin Pool Cleaner for 2024.

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