Dolphin T55i

Dolphin T55i Robotic Pool Cleaner Review

Best Price
$1699
Robert K. Robotic Pool Cleaner Expert Reviewed by Robert Knight
The Dolphin T55i Robotic Pool Cleaner has the following:
  • In-Store Exclusive - As an in-store exclusive, there are often cheaper, with more features, and even a longer warranty than the Dolphin T55i such as the Dolphin Quantum, Dolphin Explorer E30, Dolphin Premier, and Dolphin Sigma.
  • myDolphin Plus App - An upgrade over the Dolphin T35, the Dolphin T55i features the myDolphin Plus app for enhanced control.
  • Lower Suction Power - The Dolphin T55i has smaller motors and less suction power by over 500 gallons per hour compared to the new ProLine's Commercial-Grade Motors, despite being more expensive.
  • Complete Pool Coverage - The T55i efficiently cleans the entire pool, from the floor to the waterline.
  • Utilizes the Multi-Layer Basket - Rather than standard and ultrafine filters, the T55i uses a dual layer basket to capture debris which worked well in our testing.
  • Shorter Warranty - The Dolphin T55i includes only a 2-year warranty compared to the ProLine's 3-year warranty. For this price, we expect a 3 year warranty.
  • Dolphin T55i Poolside
  • Dolphin T55i Poolside 2
  • Dolphin T55i Underwater 3
  • Dolphin T55i Underwater Wall Cleaning 4
  • Dolphin T55i Poolside Waterline Cleaning 5
  • Dolphin T55i Poolside Cleaning Robot 6
Scorecard

Ratings

Waterline Cleaning Excellent Excellent
NanoFiltration Bad Not Available
Pool Coverage Good Average
User Experience Good Average
No Restocking Fee Bad Sellers May Charge 20%+ Restocking Fee
Warranty Good 2 Year Warranty
Check mark Highs

myDolphin Plus App

Complete Pool Coverage

Utilizes the Multi-Layer Basket

X icon Lows

In-Store Exclusive

Lower Suction Power

Shorter Warranty


Dolphin T55i Review

An In-Depth Review by Robert Knight

Introduction

The Dolphin T55i is a standout model from the venerated T-Series, packing a lot of punch for its price range. Over three months of thorough testing, we found it to be a reliable workhorse, consistent in its cleaning performance and impressively user-friendly. Its ability to climb walls and filter out debris, large and small, underscore its proficient navigation system.

Notable features, such as the weekly timer and easy-to-clean cartridges, significantly enhance its convenience factor. After investing considerable time testing this robot, it's safe to say we've gained a true appreciation for its capabilities and dependable design.

Yet, while the Dolphin T55i largely satisfied our expectations, it falls within the decent category, and doesn't exactly knock it out of the park. If you're seeking a robotic pool cleaner that truly excels in every dimension, we do have a recommendation that you might consider.

Pool Types

The Dolphin T55i is designed not only for its uncompromising functionality but also its versatility in fitting multiple types of pools. Primarily, the T55i is an exceptional performer when it comes to in-ground pools because it's capable of accommodating pools that are up to 50 feet in length. The smart navigation and advanced scanning software allow it to traverse large pools efficiently, regardless of their shapes — whether that be a rectangle, oval, or free-form.
Moreover, the T55i showcases its adaptability when it comes to various pool lining material. The robust tracks and special brushes this Dolphin model is equipped with demonstrates superior scrubbing ability on gunite, fiberglass, vinyl, and liner pool surfaces. So, whether your pool is surfaced with rugged gunite or a smooth vinyl liner, you can count on the T55i to deliver a pristine clean every single time.
Lastly, what sets the T55i apart is its heightened sense of convenience for the user. With its weekly timer setting, you get the freedom of automation allowing your pool to be clean without the need for daily interaction or battery recharges. A perfect blend of performance and convenience, the Dolphin T55i is certainly a gem among the robotic pool cleaners.

Pool Coverage

The Dolphin T55i excels when it comes to cleaning coverage. This advanced robotic pool cleaner has been designed to traverse not just the floor, but also the walls, and even the waterline of your pool, providing a comprehensive, deep clean every single time it's turned on.
One of the standout features of this robot is its versatility. While some pool cleaners are limited to flat surfaces, the Dolphin T55i is flexible enough to work effectively in any kind of pool, regardless of the shape or slope. It boasts an impressive capability to adapt and adjust to the nuances of different pool designs, ensuring no part of your pool is left untouched by its cleaning cycle.
For those with irregularly shaped pools or those that include features such as steps, slopes, and ledges, the Dolphin T55i is an excellent choice. With this robot at your disposal, every inch of your pool, from the deepest parts of the floor to the waterline, will be meticulously cleaned, leaving you with sparkling clean water every day.

Filtration

The Dolphin ProLine series is superb in many ways, but its NanoFiltration ability takes the cake. It's a seemingly futuristic feature that sets the brand apart. The NanoFiltration ability is no marketing gimmick. In my experience, it facilitates an unbeatable thorough cleaning.

I've tested numerous pool robots, but the ProLine series takes deep cleaning to another level. Remember, filters are pivotal in enhancing the hygiene and cleanliness of your pool and this is where ProLine shines. With its NanoFiltration mechanism, it leaves no stone unturned.

The first time I saw this feature in action, I was genuinely surprised by its effectiveness. Small debris, algae, and other often missed particles didn't stand a chance. The deep cleaning level it delivered went above and beyond all other pool robots I've previously tested. This feature alone makes the ProLine series a worthy investment.

It also managed to improve water circulation, which no other pool cleaner has managed to do effectively. This not only ensures your pool remains clean uniformly, but also enhances the overall health of your pool. It's a premium feature that promises and delivers superior performance.

Cleaning Performance

Let's start with our top pick, the Dolphin ProLine robotic pool cleaner. In our test pools, the ProLine not only met but often exceeded our expectations. Its scanning technology allowed it to navigate around obstacles and cover the entire pool surface with ease. It was evident that the ProLine is designed for strength and durability, with a sturdy build and durable brushes that tackled all types of debris effectively.
Even in pools with difficult layouts, the ProLine adjusted smoothly and efficiently. Its tangle-free swivel system prevented any mishaps, promising a seamless cleaning operation. A significant time-saver was the weekly timer option. It allowed the ProLine to run on schedule without requiring daily intervention.
When it came to cleaning efficiency, the ProLine was a clear standout. The robotic pool cleaner quickly got rid of fine particles, leaves, acorns, and even algae. It completed its cleaning cycle in less than 2 hours, leaving the pool sparkling clean.
The power and effectiveness of the Dolphin ProLine proved the value of corded over cordless robotic pool cleaners. Where cordless models required constant attention, the ProLine, once set, was almost entirely hands-off. This meant more time enjoying the pool and less time cleaning it.
For a deeper dive into the Dolphin ProLine's specifics and to contrast it with other models, check out our detailed Dolphin ProLine Review here. Also take a look at our comprehensive guide on best robotic pool cleaners to help make your choice easier.

Restocking Fee

Cordless

When navigating the terrain of the pool cleaning world, the question of corded vs cordless robotic cleaners often pops up. After putting over 100 robotic pool cleaners to the test, our preference inclines heavily towards corded robots. They come with a consistent power supply which guarantees continuous operation, without the hindrance of having to recharge frequently as with cordless robots.
This continuous power flow optimizes the performance of corded robots. They provide a level of operational efficiency which outdoes their cordless counterparts, allowing them to accomplish cleaning tasks in a more thorough and efficient manner. That’s why we believe corded pool robots are simply the best choice.
On the other side of the coin, cordless robots do have some appealing features. However, these are outweighed by their limitations. The primary drawback to cordless robots is their need to recharge. Consider, every time a cordless robot needs a recharge, you need to manually intervene, disrupting the smooth flow of the cleaning process. This can be bothersome if you lean towards a set-it-and-forget-it approach to pool cleaning.
Furthermore, the batteries of cordless robots usually have a shorter lifespan compared to the overall longevity of the robot. This means that, unlike with corded robots, you are likely to incur the extra expense of battery replacement for a cordless cleaner which adds on to its initial cost. In light of these findings, corded robots are the clear front-runners in the quest for pool cleanliness.

Weekly Timer

The presence of a weekly timer in a robotic pool cleaner cannot be overstated in terms of convenience and ease of use. It sets the machine to automatically clean your pool at predetermined and consistent intervals. This ensures that your pool hygiene is maintained without your constant supervision, leaving you with more time for the activities that you love.
Sadly, not all robotic pool cleaners have incorporated this useful feature. This absence could lead to inconsistent cleanings if users forget to activate their devices from time to time. A weekly timer is an automation feature that can drastically enhance the usability and efficiency of a pool cleaning device.
On line with that thought, I absolutely advocate for the incorporation of weekly timers in all robotic pool cleaners. I see it as a standard feature that should be inherent in all devices of this nature. Knowing that your device is consistently working without you having to monitor it all the time provides a special kind of relief.
As an expert reviewer, I have noted that most of the high-end cleaners, including my favored Dolphin ProLine and Dolphin Max-Series models, tend to provide this feature. However, even some budget-friendly cleaners like certain Aquabot models are not left behind in this regard. It is by upholding such essential aspects that a brand can truly reflect the value of their product.

Overview

The Dolphin T55i robotic pool cleaner is a commendable offering from the Dolphin ProLine series. It is recognized for its efficient cleaning performance, exceptional navigation, and advanced features like WiFi connectivity for remote control. Earning a robot.score above 90, it is an excellent choice for those demanding quality and convenience in their pool cleaning routine. Perhaps one of the most impressive strengths of the Dolphin T55i lies in its power and intelligent cleaning strategies. Unlike cordless cleaners, this corded robot pool cleaner delivers reliable, sustained power for comprehensive pool cleaning. It is designed to work independently, requiring minimal interference from the user. Its weekly timer option further enhances this automation, allowing users to set and forget their pool cleaning schedule for even more convenience. This high-end pool model justifies its price with a good record of performance and durability. It is highly efficient, even in challenging pool conditions, and is praised for its ability to keep pools sparkling clean with minimal effort on part of the owner. Moreover, the fact that it is a part of renowned and well-performing Dolphin ProLine and Max-Series speaks volumes about its quality, as these series are known for their exceptional pool cleaners, including the likes of the Dolphin Premier, Sigma, Quantum, Cayman, and Escape.
Despite its many strengths, the Dolphin T55i faces stiff competition from other impressive models in the market. However, it continues to hold its own, offering superb cleaning and ease of use. For a detailed comparison, do check out other reviews such as the Dolphin Explorer pool robot, Aquabot, and other models from the Dolphin Max-Series, all available on our website. In conclusion, the Dolphin T55i is a high-quality robotic pool cleaner that offers an unbeatable blend of power, precision, and convenience. It is ideal for those in search of a premium, automated solution for their pool cleaning needs.
For a more in-depth analysis of different pool cleaners and their capabilities, you can visit our best robotic pool cleaners review.

Recommendation

Absolutely, here are the recommendations for ProLine and Max-Series robots: Based on our extensive analysis and user experience, we highly recommend the Max-Series and Pro-Line robotic pool cleaners. Known for their advanced functionality and superior quality, these automated pool cleaners never fail to impress us with superior cleaning performances.
We hold a special admiration for the Dolphin ProLine. The ProLine robotic pool cleaner effortlessly scrubs, vacuums and filters all pool surfaces in just a few hours. It's one of the top performers amongst robotic pool cleaners. Get more detailed information here: Dolphin ProLine Review.
In addition to the ProLine, we are also fans of the Max-Series pool bots, which includes the Dolphin Premier, Sigma, Quantum, Cayman, and Escape. These robots boast unparalleled cleaning power and efficient pool coverage. Experience high-quality cleaning with these products and read more in our in-depth reviews: Dolphin Premier Review, Dolphin Sigma Review, Dolphin Quantum Review, Dolphin Cayman Review, and Dolphin Escape Review.
To conclude, if you're in the market for resourceful, efficient and reliable robotic pool cleaners, Dolphin's ProLine and Max-Series should be right at the top of your list. Happy swimming!

Robert K. Robotic Pool Cleaner Expert

About Robert Knight

With over 5 years of robotic pool cleaner experince after working for one of the largest online pool retailers, Robert joined Robotic Reviews as one of the premier authors. With hours of hands-on testing on the Dolphin T55i, read his thoughts on the cleaner.

Compare to higher rated robots

Dolphin Sigma Robotic Pool Cleaner

Dolphin Sigma Pool Cleaner

Dolphin Premier Robotic Pool Cleaner

Dolphin Premier Pool Cleaner

Best Price

$1347

Check mark Highs

Dolphin's Best Pool Robot Yet - More Features, More Filters, & More Power.

Most Advanced Dolphin Ever - Utilizes Gyroscope

Includes NanoFilters - Unlock a Deeper Clean

Quad Scrubbing Brushes - 4X Cleaning Power

Utilizes 3 Dolphin ProLine Commercial-Grade Motors

Best Price

$1297

Check mark Highs

Only Dolphin with a Leaf Bag - includes Multi-Media

Waterline Cleaning Beast

New, High Performing Dolphin ProLine Model

NanoFiltration - Premier's NanoFilters allow it to clean deeper than standard Dolphin pool robots

3 Year Warranty

Dolphin T55i
Robot Class: In Ground

Features

Waterline / Tileline Cleaning

Clean where other robots can't.

90% of the bacteria in your pool is on the waterline. Don't get confused with robots that are "Wall Climbing". There is a big difference. Waterline cleaning means the Dolphin T55i actively scrubs and sticks to the waterline scrubbing away this problem area in the pool. It is a feature you don't want to miss.


Dolphin Wall Climbing

Wall Climbing

Provides floor and wall coverage

Dolphin T55i is able to easily clean your walls of your pool.The Dolphin T55i combines wall climbing with the even more important waterline cleaning to provide a deep clean in your pool, giving you full floor, wall, and waterline coverage in your pool.


Smartphone App

Control the Dolphin T55i from anywhere.

With the its myDolphin Plus smartphone app, you can schedule cleanings, manually control, and fine tune your Dolphin T55i.


Anti-Tangle Swivel

Anti-Tangle Swivel

No more tangled cords.

With an anti-tangle swivel, the Dolphin T55i can fully explore and clean your pool without ever getting stuck. The innovative design allows the robot to move freely 360 degrees around your pool, without ever knotting the cord.


Energy Saver

Ultra Efficient

Save hundreds of dollars a year while cleaning your pool!

Dolphin T55i saves hundreds of dollars a year in energy when compared to pressure-side or suction-side cleaners.


Dolphin WiFi Power Supply

Plug and Play

Simply Plug Dolphin T55i in and start cleaning!

Set up has never been easier. No installation needed. Dolphin T55i is ready to go right out of the box. No extra pumps, plumbing, or anything else needed. Simply plug T55i and start cleaning!

Videos

Pool & Shop

Where To Buy

Seller Buy From Availability Shop Online
In-Store Exclusive $1699 Similar Robots

The Dolphin T55i is only sold in-stores. Robots that are sold in-stores only are often overpriced when compared to their online counterparts. Usually marked up $100-300 more and with a shorter warranty, you may want to consider an alternative robot.

Looking for the best deal on the Dolphin T55i and other robotic pool cleaners? Look no further, we have you covered. We searched the web and found the best deals on Maytronics, Aquabot, Polaris, and other cleaners.


Customer Reviews


T55i Robotic Icon

Featured Reviews:

No Customer Testimonials Written Yet

Want to submit your review for Dolphin T55i?
Write your review below!


Question & Answers

Question
Why won't this cleaner climb the walls?
Answer

The above ground robotic pool cleaners are designed specifically for cleaning the FLOORS ONLY.

Question
What is the typical life span of a Dolphin robot?
Answer

The Dolphin is designed to last many seasons. However, the lifespan differs from Dolphin to Dolphin. Many different factors play a role, such as amount of use, pool chemistry, and pool surface.

Question
What DIY repairs can I complete on my Dolphin?
Answer

DIY repairs should be completed by an authorized technician. Please contact your local retailer for service, Maytronics directly at 1-888-365-7446 or the support page of our website.

Question
What are the voltage requirements for the Dolphin power supply?
Answer

The Dolphin requires a standard 120v outlet for power.


Pool Attributes

Specifications

Pool Types In Ground
Pool Size 50 ft
Pool Shape Rectangle, Oval, or Freeform
Obstacles Steps, Ladder, Drain Cover, Ledges, Pop-Ups
Surface Gunite, Fiberglass, Vinyl, Liner
Cleaning
Waterline Cleaning Yes
Number of Filters Included 1
Filter Cleaning Top Access
Cleaning Coverage Floor, Walls and Waterline
Cleaning Cycle(s) 1.5, 2 hrs
Number of Brushes 2
Connectivity & Automation
Remote operation No
WiFi / Bluetooth WiFi: Yes
Bluetooth: Yes
Smartphone App Yes
Automated Weekly Timer Yes
Other
Full Bag Indicator No
Cable Length 60 ft
Anti-Tangling Swivel Yes
Restocking Fee No
Warranty 2 Years
Caddy Included Optional Caddies Available
Official Website
Official Dolphin Premier Comparison Page Dolphin T55i vs Dolphin Premier
Official Dolphin Sigma Comparison Page Dolphin T55i vs Dolphin Sigma
Part Number 99996245-WINI
ASIN

Dolphin T55i
Robot Class: In Ground

Accessories

Terra Premium Caddy

Terra Caddy

The Must-Have Dolphin Accessory

Weather and UV-Resistant. Terra Caddy is the go-to Dolphin Caddy. Sealed and protected, the Terra Caddy is covered in a protect resin that cures to an extremely hard layer, making it resistant to scratches and weathering. The resin cures very hard, making it solvent-resistant and scratch-resistant. This level of protection makes the Terra Caddy stand up to rain, sunshine, termites, and more.


Dolphin Universal Caddy

Dolphin Caddy

Move and Store

A robotic pool cleaner is an investment, so make sure to protect it. The Dolphin Universal Caddy is a solid caddy that gets the job done. Easily store and transport your robotic pool cleaner to keep it lasting for years to come.


Dolphin Robotic Pool Cleaner Replacement Parts

Replacement Parts

Need extra filters, replacement power supply, or new climbing rings?

Looking for Dolphin T55i replacement parts? Well, you've come to the right place. Shop all replacement parts for the Dolphin T55i and all other Dolphin models.


Best Robotic Pool Cleaners
Best Robotic Pool Cleaners
Breaking down the Best Pool Robots of 2024
Aiper Fire Recall
Aiper Fire Recall
Aiper Recalls Over 20,000 Robots Due To Fire and Burn Risks on the Aiper Elite Pro
Robotic Pool Cleaner Essential Guide
Robotic Pool Cleaner Essential Guide
Best Pool Robot Buying Guide for 2023

Want to learn how to take care of your pool?

Find top how-to's, guides, and more about taking care of your swimming pool.

Read More Pool Tips