Roborock Saros 20 Sonic Review: 36,000 Pa Under 8 cm Tall, With a Dock That Does Everything
The Roborock Saros 20 Sonic is a premium robot vacuum and mop built around 36,000 Pa of suction and LiDAR navigation, in a body just 79.8 mm tall that slides under low furniture. Its dock empties the robot, washes and dries the mop and doses detergent automatically, the mop lifts on carpet, and a rated 190 minutes of runtime covers large homes on one charge. It works with Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter over 2.4 or 5 GHz Wi-Fi. The trade-offs are a flagship price, a one year warranty and a large, heavy dock.
- Large homes
- Homes with low furniture
- Mixed hard floors and rugs
- Low-maintenance cleaning
- Multi-platform smart homes
Pros
- 36,000 Pa suction with carpet cleaning and a side brush
- Slim 79.8 mm body reaches under low furniture
- Rated 190 minutes of runtime, recharges in about 2.5 hours
- LiDAR navigation with obstacle avoidance, multi-room maps and no-go zones
- Dock empties the bin, washes and dries the mop and doses detergent
- Mop lifts automatically on carpet
- Works with Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter
- Dual-band 2.4 GHz and 5 GHz Wi-Fi
Cons
- Large, 10.3 kg dock that needs a permanent space
- Only a one year warranty
- Rated 64 dB noise level
- Premium price, plus ongoing bag and detergent costs
Who is the Roborock Saros 20 Sonic for?
It suits a household that wants vacuuming and mopping to run on a schedule with almost no upkeep. At 79.8 mm tall the robot reaches under sofas, beds and cabinets that block taller models, and a rated 190 minutes of runtime lets it cover a large floor plan before returning to the dock. Because the mop lifts automatically on carpet, it fits homes that mix hard floors with rugs, and its platform support makes it an easy addition to almost any smart home.
What the Roborock Saros 20 Sonic offers
Suction is rated at 36,000 Pa, with carpet cleaning and a side brush for edges and corners. LiDAR navigation drives obstacle detection, cliff sensors, multi-room maps and no-go zones, and the app adds real-time tracking, scheduling and a child lock. The dock handles the routine work: it empties the 228 ml onboard bin into a 2.7 L dock bin, washes and dries the mop and dispenses detergent from its own supply, fed by a 4 L water tank. The robot returns to recharge on its own and recharges in about 2.5 hours. Wi-Fi runs on both 2.4 GHz and 5 GHz, plus Bluetooth, and it works with Alexa, Google Home, Apple Home, SmartThings, Home Assistant and Matter.
What to know before you buy
The dock measures 409 x 440 x 470 mm and weighs 10.3 kg, so it needs a permanent spot with room around it, and a self-emptying, self-washing dock brings ongoing costs for dust bags and cleaning solution. The rated noise level is 64 dB, typical for this suction class but noticeable in the room it is cleaning. The warranty is one year, which is short for a flagship at this price.
Is the Roborock Saros 20 Sonic worth it?
On paper it is about as complete as a robot vacuum gets: very high rated suction, a sub-8 cm body, long runtime, a dock that covers emptying, washing, drying and detergent, and support for every major smart home platform on both Wi-Fi bands. For a large home with rugs and low furniture that wants hands-off cleaning, it is a strong candidate. A smaller home, or one without low furniture, can get most of the cleaning for considerably less.
Frequently asked questions
Does the Roborock Saros 20 Sonic work with Apple Home and SmartThings?
Yes. It supports Matter, which brings it into Apple Home and SmartThings, and it also works with Alexa, Google Home and Home Assistant.
Does the Saros 20 Sonic clean itself?
Yes. The dock empties the robot's bin into its own 2.7 L bin, washes and dries the mop and dispenses detergent automatically.
How long does the Saros 20 Sonic run on a charge?
It is rated for up to 190 minutes of runtime, returns to the dock on its own when it needs power and recharges in about 2.5 hours.
Can the Saros 20 Sonic fit under low furniture?
The robot is 79.8 mm tall, so it clears furniture with a gap of about 8 cm or more.
Will the Saros 20 Sonic wet my rugs?
No. The mop lifts automatically when the robot detects carpet, so rugs are vacuumed without being mopped.
Does the Saros 20 Sonic support 5 GHz Wi-Fi?
Yes. It connects over both 2.4 GHz and 5 GHz Wi-Fi, and it also has Bluetooth.
