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Robot Vacuums · Head to head

eufy Omni S2 vs Roborock Saros 20 Sonic

Full Robot Vacuums comparison in 2026

Updated October 2026
Data from Amazon and official Eufy and Roborock sites.
2026 verdict
For a home that wants speed of cleaning and every Wi-Fi band, the Roborock Saros 20 Sonic is the better robot vacuum of this pair, out-suctioning the eufy Omni S2 and running longer per charge.
Roborock Saros 20 Sonic
Winner
Roborock Saros 20 Sonic
$1499.99$1699.9912% OFF
Buy on Amazon USA
It wins on battery at 190 minutes against 179, on connectivity with dual-band 2.4 GHz and 5 GHz Wi-Fi plus Bluetooth, on suction at 36,000 Pa against 30,000, on a 4L water tank against 3L and on a 2.7L dock bin against 2.5L. The eufy Omni S2 is the more affordable option, carries a two-year warranty against one and is rated quieter at 59 dB against 64 dB. Both docks empty, wash, dry and dose detergent and both reach every major platform, so pick the Roborock Saros 20 Sonic for power, runtime and dual-band Wi-Fi, and the eufy Omni S2 for value, the longer warranty and quieter running.
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Featureeufy Omni S2Roborock Saros 20 SonicWinner
Price$1599.99$1499.99Roborock Saros 20 Sonic
Rating4.44.2eufy Omni S2
Warranty2 years1 yeareufy Omni S2
Battery Life179 minutes190 minutesRoborock Saros 20 Sonic
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, 5 GHz WiFi, BluetoothRoborock Saros 20 Sonic
Suction Power30000Pa36000PaRoborock Saros 20 Sonic
Water Tank Capacity3L4LRoborock Saros 20 Sonic
Dock Dustbin Capacity2.5L2.7LRoborock Saros 20 Sonic
Auto RechargeYESYESTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Navigation TypeLaser (LiDAR)Laser (LiDAR)Tie
Obstacle DetectionYESYESTie

What the differences mean

Suction

Roborock rates the Saros 20 Sonic at 36,000 Pa and eufy rates the Omni S2 at 30,000 Pa, a gap that favors the Roborock on carpet and in heavy pet hair.

Water and dock capacity

The Roborock Saros 20 Sonic holds a 4L water tank and a 2.7L dock bin, against 3L and 2.5L on the eufy Omni S2, so the Roborock goes longer between refills and empties.

Connectivity

The Roborock Saros 20 Sonic connects over both 2.4 GHz and 5 GHz Wi-Fi and adds Bluetooth, while the eufy Omni S2 is limited to 2.4 GHz Wi-Fi, which can complicate setup on a combined network.

Battery

The Roborock Saros 20 Sonic is rated for up to 190 minutes per charge against 179 on the eufy Omni S2, a modest but real edge on a large floor.

Noise

eufy rates the Omni S2 at 59 dB and Roborock rates the Saros 20 Sonic at 64 dB, so the eufy is the quieter of the two.

Warranty

eufy covers the Omni S2 for two years and Roborock covers the Saros 20 Sonic for one, so the more affordable robot carries the longer promise.

Which one to buy if

Eufy

eufy Omni S2

Prime exclusive deal
$1599.99
Buy on Amazon USA
  • + Rating: 4.4
  • + Warranty: 2 years
  • - Price: $1599.99 vs $1499.99
  • - Battery Life: 179 minutes vs 190 minutes
Winner
Roborock

Roborock Saros 20 Sonic

12% OFF
Prime exclusive deal
$1499.99
$1699.99
Buy on Amazon USA
  • + Price: $1499.99
  • + Battery Life: 190 minutes
  • + Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
  • - Rating: 4.2 vs 4.4
  • - Warranty: 1 year vs 2 years

What owners say

Owners of the eufy Omni S2 keep the mop at the centre of their reviews: the roller lifts ingrained mud and sticky patches that pad mops leave behind, and it moves between hard floors and rugs without fuss. Suction runs a close second, with one owner who tested it against a rival flagship noting the bin holds airflow after a week of nightly runs instead of caking the filter. Obstacle avoidance is called among the best in the class, marking shoes, cords and even a paper plate on the map and going around them, and owners also like the premium build, quiet running outside the self-empty cycle and a tall dock that is easy to fill. The weak spots they name are a robot that can lose a complex layout, a buggy Android app, map edits that do not stick and some units throwing repeated errors.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • eufy Omni S2
  • Roborock Saros 20 Sonic

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Frequently Asked Questions

Which is better, the eufy Omni S2 or the Roborock Saros 20 Sonic?

The Roborock Saros 20 Sonic, on battery, connectivity, suction, water tank and dock bin. The eufy Omni S2 wins on price, warranty and noise, so it suits buyers who want the cheaper, quieter machine.

Do both wash and dry their mops?

Yes. The eufy Omni S2 and the Roborock Saros 20 Sonic each empty the bin, wash and dry the mop and dose detergent at the dock, and both lift the mop over carpet.

Which one supports 5 GHz Wi-Fi?

The Roborock Saros 20 Sonic, which connects over 2.4 GHz and 5 GHz Wi-Fi and also has Bluetooth. The eufy Omni S2 is limited to 2.4 GHz Wi-Fi.

Which one has the longer warranty?

The eufy Omni S2, covered for two years against one year for the Roborock Saros 20 Sonic.

Who should buy the Roborock Saros 20 Sonic?

Large homes that want high rated suction, long runtime, a dock that handles everything and dual-band Wi-Fi with Bluetooth.

Who should buy the eufy Omni S2?

Buyers who want the lower outlay, a two-year warranty and quiet running, and who do not need a 5 GHz network or the extra dock capacity.

Full comparison table

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