updated: July 23, 2020

Is the Roborock S6 robot vacuum & mop a wise upgrade from the Roborock S5? Read our review and decide for yourself.

Price: High

If there are any robot vacuums that can give Roombas a run for their money, it’s the Roborock S6. This upgrade from the popular Roborock S5 works as both a vacuum and mop, with several improvements in smart tech and performance. Aesthetically, it’s still the same barebones white, black, or rose gold and nearly the same dimensions.

Roborock S6 is best hybrid model.

The mopping function is only mildly improved over the S5, but for the price and the excellent vacuum performance, it’s certainly a contender for becoming your next automated cleaning machine. Tech lovers will rejoice at the smart navigation and improved mapping features.

Of course, like all robot mops and vacuums, the S6 is designed to be a maintenance cleaner between heavy duty manual cleaning. This is especially true of the mopping function. It’s basically like a spray mop. So don’t expect it to remove months’ worth of sticky spills and scuff marks.

Let’s take a closer look-see.

What’s in the box?

Roborock S6 unboxed

Inside the shiny new box, you’ll find:

  • Roborock S6 vacuum/mop
  • charging dock with power cord
  • plastic waterproof base
  • 140 mL water tank
  • 5 disposable mop cloths
  • 2 reusable mop cloths
  • extra HEPA-style filters and water filters
  • brush cleaning tool (tucked into the machine itself)
  • user manual

The Roborock S6 comes with a 1-year manufacturer’s warranty. It runs up to 3 hours on quiet mode (vacuuming) while a typical mopping cycle lasts from 45 – 60 minutes.

How has the S6 improved since the S5?

Improved algorithms made the model quicker and smarter.

Runtime is 30 minutes longer than the S5 (despite both having the same battery) for a few reasons. The quieter, more efficient motor and navigation programming ensures better use of battery life.

Improved mapping algorithms lead to a 20% quicker cleaning time. Rather than a set program of cleaning in straight lines, it will map out the area and determine a battle plan that leads to fewer turns that eat up battery life. Owners with little to no carpet will experience longer battery life, since carpet boost and max modes will consume more battery charge.

One tech improvement that seasoned robot vac owners will notice is that the S6 can support 5G WiFi, whereas most vacs can only use 2G. You can also operate the S6 via a dedicated Roborock app rather than the Mi Home app, which may be less confusing to use.

The S6 model is noticeably quieter than predecessor

Other notable improvements since the S5 include softer roller brush bristles that are 250% denser mounted on a floating roller that automatically adjusts height to better travel over varying surfaces. The side brush is variable speed and now composed of silicone bristles rather than traditional nylon.

This machine is also 50% quieter than the S5 when in quiet mode. On average, in quiet mode, the S6 runs about 35 dB, which is truly whisper quiet. In carpet boost mode, it only reaches 40-45 dB, which is still much quieter than most other robot vacs.

For mopping, the S6 isn’t vastly improved over the S5. Unlike the S5, the S6 comes with several disposable mopping pads as well as 2 new reusable pads. You can now customize the amount of liquid used between 2 settings. The lesser amount will be best for the thinner disposable cloths. Of course, you can simply use the mop pads dry for dust mopping.

Roborock S6 design and size

  • Dimensions: 13.8” W x 13.8” L x 3.8” H
  • Weight: 8 pounds
  • Warranty: 1-year limited

Design is still very much the same as for S5 model.

The body is still very much the same barebones white, black, or rose gold and the same dimensions as the S5. It is 1 pound heavier. The water tank is the same 140 ML capacity. The waterproof mat that fits against the dock keeps the wet pad from damaging your floor when it sits after a cycle. Large wheels and the floating roller keep the S6 from getting stuck when crossing thresholds and transitions up to 2 cm high.

On top are 3 buttons for basic functions – start/stop, spot clean, and return to dock. A bold orange sensor sticks up from the center of the main body in a white housing about ¼ inch higher than the rest of the machine. This does add to the already generous total height of 3.8 inches, which means this robot may not fit under all your furniture and toe-kicks.

Stephen A. Hancock - Cleaning Expert
Remember to pick up loose cables, shoe strings and fringed throw rugs before running your vacuum OR set up no-go zones around them. Powerful robot vacs are notorious for eating charging cables and other tangle-prone items.
Stephen A. Hancock
Robotics Expert

However, that orange doohickey is where the magic happens for the S6’s sophisticated navigation and room mapping. It has 14 sensors packed into the top, sides, and bottom of the machine, plus a 32-bit quad-core processor that allows the S6 to clean 20% faster than the S5.

You say jump, the S6 asks how high

Like the S5 and other Xiaomi devices, you can control the S6 in the MiHome or Roborock apps and set cleaning times. In that app, you can choose from 4 cleaning modes:

  1. Quiet
  2. Balanced
  3. Turbo
  4. Max

You can control the Roborock S6 using MiHome or Roborock apps.
Like other Xiaomi appliances you can control the Roborock S6 using MiHome or Roborock apps.

None of this is mind-blowing, but… here’s where the S6 shines over the S5. You could get really specific and set how and where you want the bot to clean at certain times. For instance, a quiet clean at 10:00 PM in the living room or a balanced clean at 9:00 AM in the kitchen. Sounds like a game of Clue, but we digress.

The app allows you to see where the bot is at any given time, including where it’s headed and where it’s been. Plus, you can see your floor plan evolve as the bot builds the map and edit the maps as needed. Once it’s done, you can save those maps and name specific zones so you can later send the bot to one room or another. More importantly, you can set up virtual barriers and no-go zones in the app, which is something many high-tech brands are still lacking

You could control your S6 using voice commands.

When the battery is low, the Roborock can return to its dock automatically. Or when you’re tired of watching it go OCD on your floors, you can tell it to re-dock at any time.

Oh, and we almost forgot to mention that you can pair the S6 with your Alexa or Google Home Assistant if you’d rather just yell your commands rather than pushing buttons.

What’s great about the Roborock S6?

Plus

Maintenance is basically the same as with comparable robot vacs. You’ll need to clean the brush roll regularly (handy brush cleaning tool to the rescue!), especially if you have furry pets or kids. Filters are cleaned with a simple rinse and let air dry method.

The S6 comes with several disposable mopping cloths as well as some reusable ones, unlike the S5, which only has reusable ones.

Maintenance is very easy for the Roborock S6 model.

Fans of Xiaomi products think the S6 is worth the investment and that it’s a great alternative to the more expensive Roombas. They like being able to adjust the amount of water on the mop feature. Customers really like the virtual barriers and no-go zones while using the mop function so the carpet stays dry.

Customers love how quiet this robot is and the many options for scheduling cleanings. They’re also happy that they could connect the machine to both 5G and 2G WiFi. Some customers appreciated the Roborock app as opposed to surfing through the menus on the Mi Home app.

What’s not-so-great about the Roborock S6?

Minus

The Mi Home app houses all the programs for all Xiaomi’s robots, and it’s not any more intuitive than the S5 version. Even tech-savvy people had issues digging through all the menus. Some customers experienced false errors about clogged brushes or dirty filters. Others were unhappy with how frequently Xioami rolled out firmware updates that often replaced one bug with another. A few Alexa users wished there were more options than just starting and stopping a cycle. Google Assistant seems to have more options.

When removing dustbin, a bit of debris may spill out into the dustbin compartment...

One downside to the increased battery life is that carpet cleaning performance isn’t quite as good as with the S5. One reason for this may be that the side brush doesn’t always spin. It will spin on edge cleaning passes and other modes, but often won’t spin at all. This could very well improve battery life, but at the expense of less dirt pickup.

When it comes to mopping, like the S5, the S6 loses some IQ points in that it can’t distinguish between carpet and hard floors. Being able to set no-go zones helps with this, but if you forget…oops, wet carpet!

Stephen A. Hancock - Cleaning Expert
Whenever possible, download apps specifically for your smart appliance model rather than the brand’s app. Tutorials such as this one on YouTube can help a lot with setup.
Stephen A. Hancock
Robotics Expert

The intake hole in the dustbin doesn’t have a flap over it, so when removing it, a bit of debris may spill out into the dustbin compartment in the machine. The side brush is held on by a screw, which is mildly annoying when you need to clean hair from the brush or replace it. Potential dents may occur if the bot happens to hit furniture or walls too hard, since the bumper is hard rather than rubberized.

Conclusions

For the improved navigation and mapping alone, the Roborock S6 is a worthy upgrade over the S5 and a good alternative over pricier brands. If you’re not tech-savvy, this is not the machine for you. In terms of performance in mopping and vacuuming, you’re NOT getting much of an improvement over the S5, though you will have better mapping, battery life, and a quieter motor. It’ll cost you a good bit more though, so it’s kind of a toss up. If you have an S5 already, and it’s working fine, we’d suggest keeping it until it dies. Then go for the S6.

PROS

    PROS:

  • 14 obstacle and navigation sensors
  • 20% faster cleaning (compared to S5)
  • 50% quieter (compared to S5)
  • Advanced mapping with room/zone selection
  • Virtual barriers and no-go zones
  • Battery run time up to 3 hours
  • Voice control with Alexa or Google Assistant
  • Works with 5G WiFi
Thumbs-up
CONS

    CONS:

  • May roll over carpet while mopping
  • App isn’t intuitive
  • Expensive
  • Limited Alexa controls
  • Doesn’t perform as well on carpet as the S5
  • False errors
  • Hard plastic bumper could leave dents
  • May not fit under low furniture
Thumbs-down

Author
Stephen A. Hancock received his M.S. in Mechanical Engineering (Robotics Track) from University of Utah in 2004. Since then, he’s contributed to numerous articles and has been a consultant for many technical publications and websites.

image description Comments
Vladan
August 28, 2020 at 10:29 am

In latest firmware, there is also “no-mop” zone so robot do not go there when mop is attached. It means you just need to set them once and then you won’t forget. Of course it means robot won’t go to that location at all if mop is attached, but you do not mop as often as you clean so this is not a problem.

Great review, thanks a lot!

image descriptionAdd comment

Robot Tips & Tricks

A woman has many questions about robot vacuums, just like most of us.
Robot Vacuum Cleaner FAQs
Robot Vacuum Cleaners are evolving at a rapid pace and have indeed become the new necessity for any modern household. Here's a breakdown on some of the most frequently asked questions about these devices
How Robotic Vacuums and Mops Navigate?
How Robotic Vacuums and Mops Navigate Through Your Home
Robot vacuums and mops are smarter than first gen models. How? By adopting the smart tech used in other devices that power our lives. Here’s how these robots go about mapping and cleaning your home.
Every technology has nuances and we try to help you to choose the good robotic vacuum.
How Does a Robotic Vacuum Work to Clean Your Floors?
Have you ever wondered how a vacuum robot really works? Before rushing out to buy one, it’s good to know about the features robotic vacuums use to clean hard floors and carpet. Read our guide to find out.
Household robots make our lives much easier.
Automate Your Cleaning With 4 Types of Smart Home Robots
Wish you had a live-in cleaning assistant that didn’t cost a fortune? Now you can! With home robots, cleaning has become more hands-off than ever before. Here are 4 types you could have right now.