Price unavailable right now
Updated November 2026
Data from the official Eufy and Roborock sites.
2026 verdict
An automatic detergent dispenser is one of the things that separates a true flagship dock from a basic one, and the Roborock Saros 20 Flow has it.
It also adds LiDAR mapping, no-go zones and a mop the dock washes and dries itself, well ahead of the Eufy 11S MAX in this robot vacuum matchup. The Eufy 11S MAX has none of that: no map, no mop, no Wi-Fi, just a bundled remote and a bin emptied by hand. It also recharges in about 2.5 hours against roughly 6 for the Eufy, so less of its day is spent waiting at the dock. What the Eufy 11S MAX still offers is a much lower price, a slightly higher owner rating and a body thin enough to slide under furniture the taller Roborock cannot reach. Buy the Roborock Saros 20 Flow for hands-off vacuuming and mopping with Matter, Apple Home and Home Assistant support; keep the Eufy 11S MAX only if a cheap, app-free vacuum is genuinely all you need.
vs
Winner
Connectivity
- Wi-Fi 2.4 GHz
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The biggest differences
Where these two are furthest apart, and by how much.
- Suction Power18×Roborock Saros 20 Flow36000Pa vs 2000Pa
- Battery Life3×Roborock Saros 20 Flow301 minutes vs 100 minutes
| Feature | Eufy 11S MAX | Roborock Saros 20 Flow | Winner |
|---|---|---|---|
| Rating | 4.1 | 4.2 | Roborock Saros 20 Flow |
| Battery Life | 100 minutes | 301 minutes | Roborock Saros 20 Flow |
| Connectivity | None | 2.4 GHz WiFi | Roborock Saros 20 Flow |
| Integrations | None | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Roborock Saros 20 Flow |
| Navigation Type | Random (Bounce) | Laser (LiDAR) | Roborock Saros 20 Flow |
| Multi-Room Mapping | NO | YES | Roborock Saros 20 Flow |
| No-Go Zones | NO | YES | Roborock Saros 20 Flow |
| Suction Power | 2000Pa | 36000Pa | Roborock Saros 20 Flow |
| Mopping Functionality | NO | YES | Roborock Saros 20 Flow |
| Auto Mop Washing | NO | YES | Roborock Saros 20 Flow |
| Auto Mop Drying | NO | YES | Roborock Saros 20 Flow |
| Self-Emptying Dustbin | NO | YES | Roborock Saros 20 Flow |
What the differences mean
Navigation
The Eufy 11S MAX bumps around at random with no memory of the room. The Roborock Saros 20 Flow builds and saves a LiDAR map, which is what makes no-go zones and multi-room cleaning possible.
Mopping and detergent
The Eufy 11S MAX has no mopping hardware. The Roborock Saros 20 Flow mops, and its dock washes the mop, dries it and dispenses cleaning solution automatically, so nothing is measured by hand.
Charging time
The Roborock Saros 20 Flow recharges in about 2.5 hours, against roughly 6 hours for the Eufy 11S MAX, so it spends less of the day parked at the dock between runs.
Body height
At 72.5 mm the Eufy 11S MAX is noticeably slimmer than the 89.8 mm Roborock Saros 20 Flow, so it reaches under beds and cabinets the taller robot's LiDAR turret keeps it out of.
Connectivity
The Eufy 11S MAX has no Wi-Fi, Bluetooth or radio of any kind. The Roborock Saros 20 Flow connects over Wi-Fi and reaches Apple Home, SmartThings and Home Assistant through Matter, alongside Alexa and Google Home.
Which one to buy if
- you want vacuuming and mopping automated with no manual dosing
The Roborock Saros 20 Flow's dock washes the mop, dries it and dispenses detergent on its own.
- you specifically do not want an app, an account or Wi-Fi
The Eufy 11S MAX runs entirely off its bundled remote with nothing to connect.
- low furniture clearance is a real constraint
At 72.5 mm the Eufy 11S MAX is slimmer than the 89.8 mm Roborock Saros 20 Flow.
- your smart home already runs on Apple Home or Home Assistant
The Roborock Saros 20 Flow's Matter support reaches both; the Eufy 11S MAX has no radio to connect with either.
- budget is the deciding factor
The Eufy 11S MAX is the far cheaper option and still does the one job, everyday vacuuming, reliably.
Price unavailable right now
- - Rating: 4.1 vs 4.2
- - Battery Life: 100 minutes vs 301 minutes
Winner
$1699.99
- + Rating: 4.2
- + Battery Life: 301 minutes
- + Connectivity: 2.4 GHz WiFi
What owners say
The Eufy 11S MAX is the only one of this pair with real owner reviews to draw on, and they consistently return to two points: how quiet it runs, often compared favourably to a fan or an air conditioner, and how much dust and pet hair it collects for a robot at this price. Several owners specifically treat the lack of an app as a plus rather than a limitation, since there is no account to set up and no cloud to depend on. The main complaint is that it wanders without a saved map, occasionally repeating a spot or missing one entirely, and a minority report the side-brush motors wearing out within the first year.
Frequently Asked Questions
Which is better overall: Eufy 11S MAX or Roborock Saros 20 Flow?
The Roborock Saros 20 Flow, thanks to LiDAR mapping, mopping with a self-washing and detergent-dosing dock, and Matter-based smart home support. The Eufy 11S MAX wins on price and owner rating as a basic vacuum-only robot.
What is the biggest difference between the Eufy 11S MAX and the Roborock Saros 20 Flow?
Automation. The Roborock Saros 20 Flow maps with LiDAR, mops with a self-washing dock and doses its own detergent, while the Eufy 11S MAX has no mapping, no mopping and no dock at all.
Does the Eufy 11S MAX mop?
No. The Eufy 11S MAX is vacuum-only, so mopping, auto mop washing and auto mop drying are areas the Roborock Saros 20 Flow wins outright.
Which one recharges faster?
The Roborock Saros 20 Flow, at about 2.5 hours against roughly 6 for the Eufy 11S MAX, so it is ready to resume a large cleaning job sooner.
Who should buy the Roborock Saros 20 Flow?
Buy the Roborock Saros 20 Flow if you want a flagship robot vacuum with LiDAR mapping, a self-cleaning mop dock with automatic detergent, and Matter, Apple Home or Home Assistant support.
Who should buy the Eufy 11S MAX?
Buy the Eufy 11S MAX if you want the cheapest, simplest vacuum-only robot, do not need mapping or mopping, and want a thin body that fits under low furniture.
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