The Xiaomi Roborock S55 Review: an Intelligent and Powerful Robot Vacuum Cleaner You Always Wished To Have

Review of:
Xiaomi Roborock S55
Brand name:
Xiaomi
Model:
Roborock S55
Reviewed by:
Rating:

Published On: October 3, 2018

Edited On: October 15, 2018


Summary

I like this robot vacuum and I think this is the best robot vacuum for such price. Even more expensive robot vacuums can't boast such impressive features that the Xiaomi Roborock has. It has an impressive suction power of 2,000 Pa, a wet mopping function, an intelligent navigation system based on the LIDAR sensor and SLAM algorithm that works amazingly accurate. Watching the robot scans my house, build a layout, and cleaning progress in the app and real-time is magnificent. The app has a lot of useful functions, however, I think it should be polished. The robot supports voice control via Amazon Alexa and Google Home smart assistances which is great for those who want to build a smart home. The HEPA filter can be washed so I'm glad that I don't need to replace it very often. This robot vacuum performs very well on low and medium pile carpets, hardwood, laminate, and tile floors, never get stuck in my apartment and pick up all human and pet hair from the carpet.

The Roborock is the second generation, most powerful robot vacuum from Xiaomi that promises to be one of the smartest and most powerful robot vacuum cleaners on the market in 2018. We have a great opportunity to review and test the Xiaomi Roborock S55 (black color). Is it a real competitor to more expensive flagship robot vacuums such as the Neato Botvac D7 Connected, iRobot Roomba 980 and Ecovacs Deebot Ozmo 930? Let's find out.

The Xiaomi Roborock Video Review

First Appearance

The Xiaomi Roborock comes in three color options: black, white and rose gold. The black one has a glossy finish. On the top, I can see three buttons: home, charging and spot cleaning.

Xiaomi Roborock - buttons and a lidar sensor

On the center of the lid, there is a tower with a laser sensor that maps out an interior. There are two large wheels, aside sweeper and the main brush located underneath.

Xiaomi Roborock S55 appearance

The lid opens up and I see a cleaning tool hiding under it which is a great decision, you always know where it is. The dust box is easy to pull out. HEPA filter is washable and is ideal for those who suffer from allergies and asthma.

Xiaomi Roborock S55 under the lid

LDS & SLAM technology

The LDS sensor scans a room to obtain the distance information. 13 sensors are located all over the body help the robot to navigate around, it "see" walls and other obstacles and prevent bumping. The robot avoids drop-offs. After the map has been built, the SLAM algorithm calculates the best way to clean the area. The map can be seen in the Mi Home app. In the app, I can see where the Roborock already cleaned and track it in real-time.

The app allows setting zoned cleanup and target point. By drawing a rectangle on a map I make the robot stay inside the zone I set. Target point sends the Roborock wherever you want by tapping on the map on a particular area. When setting "zoned cleanup", I can choose how many times it should clean (up to 3 times).

Every time the Xiaomi Roborock starts working, it rebuilds the map once again. It takes a few seconds for the robot to start cleaning, I was surprised how fast it creates a map.

When the battery lows down to 20%, the Roborock docks itself, recharge to 80% and returns to the point it left off to resume the cleaning until it covers the whole area.

Roborock returning to the charging dock

It spent about 40 minutes to clean my 50 square meters apartment (the 360 S6 had the job done for the same amount of time by the way).

If the Roborock is physically moved elsewhere or its charging base position is changed, the robot loses the map. Anyways, it takes a few seconds for the machine to start cleaning again.

The robot went behind the transparent curtains and got stuck there. Its laser was obviously confused after which I decided to rescue it.

Wet Mopping

The water container can be easily inserted by sliding underneath until it clicks. It is the most effortless way to install the water tank I've seen so far. When the mopping is done, click on two buttons that are located from each side and slide it out.

Roborock water tank

150 ml tank is enough to clean for about 45-50 minutes. Please, remember that the option is not able to get rid of stubborn stains. It is nice to have this feature though since it increases the amount of time I have to spend to manually clean the floor.

Roborock - attached mopping pad

Unfortunately, the manufacturer doesn't mention the ability to add a floor liquid cleaner though I think you can use some of them for a better performance on a bare floor.

I would also recommend to manually dump the mop cloth before letting the robot to go.

In the mopping mode, the Xiaomi Roborock can sweep and mop at the same time.

Xiaomi Roborock S55 and a charging dock

Mi Home app

In the app, you can see robot's time zone, adjust the voice volume, turn on/off the Carpet mode (it is off on default), schedule the Roborock up to 7 times per week.

There are 5 cleaning modes: Mop, Quiet, Balanced, Turbo and MAX modes.

You can view cleaning history, when the accessories need to be replaced/sensors to be cleaned, and manually control the robot's movements.

Roborock - cleaning history and remote control

The app helps you to monitor the battery level, how much time the robot spent cleaning and how many square feet it already cleaned.

To manually control the robot there are two options: forward/left/right buttons and a joystick. In my opinion, the buttons are easier to use. Anyway, for those who are not used to the remote control, there is a target point. Just click on the map, press "go" and the robot will go to that point.

Roborock Mi Home App - settings

Cleaning Performance

The robot has a strong suction power of 2,000 Pa, which makes it one of the most powerful robot vacuum on the market. It has an option called "Carpet boost", you can turn it on in the app. In this mode, the robot automatically increases suction when detects a carpeted surface. It is strong enough to pick up all the dust, human and pet hair from a low and medium pile carpet.

Its climbing ability is impressive. The robot vacuum can easily climb an obstacle up to 20 mm (0.78 inches) height. It easily overpasses my door thresholds and climbs onto medium-pile rugs and carpets from a hardwood floor without any problems.

Xaiomi Roborock S55 - bottom view

When you start the cleaning process, Roborock divides the room into some 3×3 meter sections, it cleans along walls and corners first, before cleaning the rest of the cleaning area in parallel lanes. The robot's sensors do an amazing job of gently touching furniture and avoid big obstacles instead of bumping harsh into them. Cliff sensors prevent the machine from falling down the stairs and other drop-offs.

You can guide the robot to the spot which you want to be cleaned via the smartphone app just by tapping on the map of your house. The spot cleaning mode allows you to send the vacuum to a targeted place in the house to clean a 2 x 2-meter square. It is a very useful feature when you scattered something on the floor. Something different from what we used to see in the other robots where they run around the spot.

The vacuum automatically keeps track of how full the bin is and stop cleaning if it gets completely full.

The Xiaomi Roborock parked to the charging dock

Zone cleanup lets to draw any size rectangle and have the robot to clean inside that shape. You can set as many zones as you want to. The robot will not cross the specified area. The cleaner can clean inside the zone up to 3 times (you can choose it in the app).

The floors in our apartment are quite different: tile, laminate, low-pile rug, low and medium-pile carpets. The robot didn't get stuck anywhere even once, had no problem getting over any of these carpets. Even though our home-based robot vacuum cleaned a day before, the Roborock got its dustbin full after the cleaning. Carpet Boost works accurately increasing the suction power once the robot steps on a carpet and switches it to normal when it leaves the surface. Thanks to its strong suction power, the Xiaomi Roborock is one of the best robot vacuums existed that provides deep carpet cleaning and performs great on a bare floor.

Xiaomi Roborock S55 dustbin

Battery life

The Xiaomi Roborock comes with an impressive 5200 mAh Li-ion battery that lasts up to the whole 150 minutes in one charge. Most of the robots run for around 100-120 minutes top. Aside of the battery life, the robot resumes cleaning until the job is done. It makes the Roborock suitable for large homes. Please note, that it is not able to map the second floor. You need to place it manually so it can start the cleaning process including mapping.

Unfortunately, our house is small and we never get to test the resume feature ourselves.

Amazon Alexa & Google Home integration

The Xiaomi Roborock is finally compatible with Amazon Alexa and Google Home. If you own any of these, you can simply command it to start or stop working via your voice.

The Xiaomi Roborock Specifications

FeaturesXiaomi Roborock
Battery capacity5,200 mAh
Suction power2,000 Pa
Operation time150 minutes
Dustbin capacity500 ml
Water tank capacity140 ml
Mappingyes
Mapping technologyLDS sensor + SLAM
Wet Moppingyes
Wi-Fiyes
AppMi Home (iOS / Android)
Zoned cleanupyes
Spot cleaningyes
Amazon Alexa / Google Homeyes
Schedulingyes
Noise level60 dB
Cleaning area2,691 ft2 / 250 m2
Barrier-cross height0.78 in / 20 mm
Washable HEPAyes
Carpet boostyes
Voice promptsyes
Warranty12 months
Price$399 on GearBest

Price and where to buy the Xiaomi Roborock

  • You can get the Xiaomi Roborock S55 (black) on Gearbest for $429.99.

  • The white version of the Xiaomi Roborock S50 comes with a $409.99 price tag.

Pros

  • Decent battery life
  • Minimalist design
  • Easy-to-insert water tank
  • One of the strongest suction power on the market
  • Large wheels make the robot able to climb up to 20 mm obstacles
  • Great performance on thin and medium-pile carpets thanks to the Carpet Boost
  • Its mapping is accurate and allows the robot to work in the dark
  • Because of the mopping, the Roborock is suitable for homes with bare floors and carpeted surfaces
  • Integrated with Amazon Alexa/Google Home

Cons

  • The app needs improvements
  • Doesn't save the map after the job is done
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