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Ecovacs Deebot Ozmo T9+ Review

One of the top performers in all of our tests was the impressive Ecovacs Deebot Oxmo T9+. It features an impressive array of technologies that make it efficient and excellent at object detection and navigation. It cleans very well and includes an app with smart features that allow you to customize and program cleanings with the push of a button.

Ecovacs Deebot Ozmo T9+ test



  • Excellent cleaning on both hard surfaces and carpet
  • Navigation and mapping are logical and efficient
  • App is easy to use and provides useful features
  • Easy to use and maintain


  • Mopping feature could be better
  • A bit expensive
  • Docking station is loud

Ecovacs Deebot Ozmo T9+ Features & Specs

Category Value
Navigation type: TrueMapping (LIDAR)
Suction power: 3000 Pa
Mopping feature: yes
Run time: 175 min
Charging time: 6,5 h
Side brushes: 2
HEPA filter: no
Dustbin size: 420ml
Noise level: 67dB
Height of the device: 93 mm (without the emptying station)
Compatibility with voice assistants: Alexa, Google Assistant
Wifi connection: 2.4 GHz Wifi

The Deebot T9 features what they call “TrueMapping” which is a combination of Lidar and a DToF laser sensor to give it one of the most robust and efficient navigation programs of any robot vacuum in our test.

It completed our room mapping test faster than any other vacuum in our test, and it follows a logical pattern as it moves around the perimeter and then efficiently cleans open spaces. It is able to recognize carpets and rugs and change the cleaning mode accordingly. However, it did get confused by our black-colored carpet and seemed to be uncertain how to proceed.

Ecovacs Deebot T9 navigation

It has excellent obstacle recognition and is able to cleanly navigate around furniture and even cords and pet waste. With that said, it did not completely avoid our fake pet waste, so we would recommend checking before you start cleaning.

We scored the Deebot a 5 out of 5 for navigation, and you can trust that it will recognize most obstacles while efficiently managing just about any type of room.

Cleaning performance

The Deebot T9 also does a great job of cleaning. It has the highest rated power in our test at 3000Pa, and we saw the results of this power in our tests. It also has 2 spinning side brushes that help to pick up debris that other vacuums might miss.

Deebot T9 carpet cleaning test

In both the hard surface and carpet tests, the Deebot performed very well. It was able to pick up both smaller bits of debris and larger debris easily. In addition, it performed the best in our pet hair test leaving behind only traces of fur.

Deebot T9 pet hair test result

The T9 also has a mopping feature, but this is not very well implemented. One drawback is that the mop pads are disposable, which means you will need to buy new ones again and again. We prefer washable pads that are reusable. It also struggled to eliminate stains in our test leaving behind sticky residue and coffee even after several passes.

Deebot T9 with mop function

Even though the mopping was subpar, it still had excellent overall cleaning results, so the Deebot earned a 4.5/5 in our cleaning performance category.

Smart features

Like most of the top robot vacuums we tested, the Deebot is a smart vacuum which means it comes with its own app that allows you to customize many features. We found the app simple and easy to install and using the QR code that came with the vacuum made set up takes only seconds.

Ecovacs Deebot T9 mobile app

The app includes a good smart mapping feature that is visually appealing, and you can set “no go” zones to keep the vacuum from going places you don’t want it to such as under a cluttered work desk or near the cat litter box.

You can schedule cleanings as well as adjust both the suction power and mop water usage.

There is also a screen that lets you see the maintenance schedule showing you what percentage of use you have left in your brushes, filters, and other components. The vacuum comes with an air freshener feature that can be controlled via the app, but we felt this was more of a gimmick than a useful addition.

While the app is not difficult to use, it is not as intuitive as it could be, and it did take some time to learn how to navigate it efficiently. Because of this, we rated it a 4.5/5

Ease of use

When it comes to ease of use, the Ecovacs Deebot T9 is a top performer. Our model came with an optional auto-empty station along with a dock, and this made emptying the dustbin easy, but even manually emptying the 420ml dustbin by hand is a simple task.

Ecovacs T9 with cleaning station

With parts regularly available and the maintenance reminders in the app, remembering to replace the brushes or filter is a simple task.

When working, it was among the quietest vacuums averaging around 63dB and reaching 74 at its peak. This is about the same as a normal conversation or traffic from inside of your car.

Operating the Deebot is quite simple and since it navigates so well, you can let it go about its business. It has a long battery life, and if it does run low, it will automatically dock, recharge, and then continue cleaning where it left off. It also performed well in our threshold test, able to clear 2 centimeters with ease.

We gave it a score of 4.5 out of 5 in this category.


With an overall score of 4.7/5, the Deebot T9 was at the top of our list for overall best robot vacuum. We think it does a terrific job both navigating and cleaning with top-of-the-line object recognition. It is easy to use and maintain, so if you want one of the best robot vacuums that you can rely on time and time again, this is an excellent choice.

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