The Roborock S8 copies iRobot's best feature

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The Roborock S8 Pro Ultra charging in its dock.

In a bold move, Roborock, the innovative Chinese robot vacuum cleaner manufacturer, has unveiled its latest masterpiece at CES 2023: the Roborock S8. Renowned for features such as sonic mopping and reactive 3D obstacle avoidance, Roborock has always been a formidable contender. However, Amazon's iRobot held one significant edge over its rival – the patent for the dual brush system. Until now, that is. With the introduction of the Roborock S8, the dual brush system is no longer exclusive to iRobot. But the S8 brings more than just a new brush to the table. Let's delve into the upgrades that set this next-generation vacuum cleaner apart.


Roborock S8 Ces 02

A Short History of Roborock

Roborock, founded in July 2014 by Richard Chang, quickly established itself in the robotics and smart home industries. A pivotal partnership with Xiaomi in 2016 led to the release of the successful Xiaomi Mi Home Robotic Vacuum Cleaner. This laid a strong foundation for future innovations, including the Roborock S5 in 2017, which combined vacuuming and mopping capabilities. Roborock continued to enhance its products, with the S6 in 2019 offering improved navigation and multi-floor mapping.

Expanding its product line, Roborock introduced the H6 cordless stick vacuum in 2020 and the S7 in 2021, featuring sonic mopping technology and automatic mop lifting. Through continuous innovation and strategic partnerships, Roborock has become a leading player, delivering smart, efficient, and reliable cleaning solutions globally.

What Differentiates the Roborock S7, S7 MaxV, and S8?

Roborock has consistently pushed the boundaries of home cleaning technology, and the announcement of the S8 at CES 2023 has generated considerable excitement. Let's explore how the S8 stands out from its predecessors, the S7 and S7 MaxV.

Roborock S7: Setting the Standard

The Roborock S7 set a high bar with its innovative features:

Roborock S7 MaxV: Enhancing Intelligence

Building on the S7, the S7 MaxV brought additional intelligence and power:

Roborock S8: The Next Generation

The newly announced Roborock S8 takes innovation a step further with significant upgrades:

The image shows a Roborock S8 robot vacuum cleaner operating on a light-coloured carpet in a modern living room. The vacuum is white with a sleek, circular design. Adjacent to the vacuum is a stylish coffee table with a marble top and wooden base, holding a book titled “ELA TOP DESIGN” and some glassware. The setting combines contemporary decor with the advanced technology of the Roborock S8, highlighting its ability to clean different floor types seamlessly.

A Dynamic Duo of Brushes for a Cleaner Home

iRobot's Roomba robot vacuum cleaners have long reigned supreme in the world of automated cleaning, not due to their motor prowess, but rather their clever use of two brushes – double the amount of their rivals. This patented dual brush system not only aids in debris collection but also minimizes the dreaded hair tangles.

Comparing the brushes of Roborock and iRobot is akin to comparing apples and oranges, as the former employs flaps while the latter opts for rubber nubs. The true test of performance will come once these machines are in the hands of reviewers. However, one observation can already be made: iRobot Roomba S9+'s D-shaped brushes are wider than those on Roborock's model, enabling a closer approach to walls, cupboards, and other obstacles.

While iRobot remains tight-lipped about suction power figures and Roborock's calculations are dubious, it's safe to assume that the S8's reported 6,000 Pa will outshine its closest competitors. The Roborock S7 MaxV's impressive suction and single brush system have already won over many reviewers, so here's to hoping the new system edges even closer to perfection.

The image shows the underside of a Roborock S8 robot vacuum cleaner. It features a dual brush system with green rubber rollers, labelled “PerfectEdge Technology.” The device also has a side brush on the left, two large rubber wheels for mobility, and a central area labelled “Automatic Dirt Disposal.” There are also contact points for charging and docking, along with a small caster wheel at the bottom.
The image shows the underside of a Roborock S8 robot vacuum cleaner. It features a single red rubber roller brush at the centre, flanked by two large rubber wheels for mobility. To the left, there is a side brush with multiple bristles for edge cleaning. The mop pad is visible at the bottom, indicating the vacuum's mopping capabilities. The overall design includes various sensors and contact points for docking and charging.

A Smorgasbord of Docking Options for Roborock S8

In a departure from the previous generation, the Roborock S8, S8+, and S8 Pro Ultra each feature slightly different vacuum cleaner units and markedly distinct docks. Unlike the uniformly specced S7 MaxV series, the new models boast varying dustbin and water tank capacities. The Roborock S8 houses a 400 ml dustbin and 300 ml water tank, the S8+ a 350 ml dustbin and 300 ml water tank, and the S8 Pro Ultra a 350 ml dustbin and 200 ml water tank.

Fingers crossed that these alterations pertain only to the dustbin and water tank, not the rest of the unit. If so, Roborock could offer the dustbin or water tank as part of each upgraded dock sale.

The Roborock S8+ features an auto-emptying dock, capable of handling dirt and debris for at least a month. As for the rather unfortunately named Roborock S8 Pro Ultra, it takes care of emptying the dustbin, replenishing the vacuum's water supply, and cleaning and drying the mop. All that's left for you is the occasional water refill and filter cleaning, making the Roborock S8 a true hands-off household helper.


The Roborock S8's innovative features, such as the dual brush system, bridge the gap between previous models, enhancing cleaning efficiency and convenience. With various docking options and improved energy consumption, the Roborock S8 is set to challenge iRobot's dominance in the robot vacuum market.

The image shows a Roborock S8 robot vacuum cleaner docked at its charging station in a modern kitchen setting. The vacuum is white and positioned neatly against a wooden slatted wall. The charging station is compact and minimalistic in design. To the right, there is a dining table with a vase of flowers and some dishes, indicating a clean and organized living space. The hardwood floor adds to the warm, inviting atmosphere of the room.
A portrait photo oif Liam Alexander Colman, the author, creator, and owner of Home Assistant Guide wearing a suit.

About Liam Alexander Colman

is an experienced Home Assistant user who has been utilizing the platform for a variety of projects over an extended period. His journey began with a Raspberry Pi, which quickly grew to three Raspberry Pis and eventually a full-fledged server. Liam's current operating system of choice is Unraid, with Home Assistant comfortably running in a Docker container.
With a deep understanding of the intricacies of Home Assistant, Liam has an impressive setup, consisting of various Zigbee devices, and seamless integrations with existing products such as his Android TV box. For those interested in learning more about Liam's experience with Home Assistant, he shares his insights on how he first started using the platform and his subsequent journey.

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