- Suction
- 36,000 Pa claimed
- Navigation
- Retractable LiDAR
- Mopping
- SpiraFlow 2.0 roller mop
- Runtime
- Not listed in minutes
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Roborock Saros 20 Flow
Flagship roller mop robot that climbs 3.46 in thresholds
Researched by Riley Hart · updated Oct 30, 2026
Is the Roborock Saros 20 Flow worth it? A top end pick for homes with high thresholds, mostly hard floors and pets, since the roller mop and 3.46 in climbing set it apart. It costs $1,700 as of Oct 31, 2026, and House Digest scored it 9/10.
A top end pick for homes with high thresholds, mostly hard floors and pets, since the roller mop and 3.46 in climbing set it apart. Reviewers praised its mopping and pet hair handling but noted weak corner and edge cleaning. Skip it if you want the cheapest way to get a self cleaning dock.
Best for: hard floor homes with tall thresholds. Skip if: you are on a budget or need spotless corners.
Specs
- Suction
- 36,000 Pa claimed (Roborock); House Digest could not verify it but estimated floors came out about 90% clean
- Navigation
- Retractable LiDAR (RetractSense) that lowers under furniture, plus VertiBeam side structured light (Roborock)
- Obstacle avoidance
- Reactive AI with structured light and RGB camera, 300+ object types, objects down to 3 cm wide and 3 cm tall (Roborock); House Digest saw it get lost once
- Mopping
- SpiraFlow 2.0 roller mop, up to 240 rpm, 15 N pressure, 16 pressurized outlets, extends up to 44 mm for edges and lifts up to 15 mm on carpet (Roborock)
- Self empty
- Yes, auto empty into a bag, up to 65 days without manual emptying (Roborock); bag size not listed
- Dock features
- Roller wash with water up to 212°F, 145°F warm air drying, auto detergent dosing, warm water refill of the robot tank (Roborock)
- Runtime
- Not listed in minutes; Roborock says up to 200 m² per charge in standard vacuum and mop mode, 6,400 mAh battery, 150 min full charge
- Height
- 3.54 in robot height (Roborock landing page); the store page lists 89.8 mm
3 year cost of ownership
- Robot
- $1,700
- Total
- $1,777
Dust bags and cleaning solution are the main running costs. A replacement roller mop price was not shown on the store page.
Status and safety
- US availability
- ● On sale
- Recalls
- ● No Roborock robot recall in the CPSC database as of Oct 31, 2026. Checked daily.
- FCC authorized
- Not checked
- Company
- ● Active
- Warranty
- ● 1 year (Roborock US store)
Parts and refills for the Saros 20 Flow
- Roborock dust bags, 6 pack
$25.59 per 6 pack on the Saros 20 Flow store page on 2026-10-30; Roborock says up to 65 days per bag, so 3 years needs about 17 bags, or 3 packs; heavy use fills bags sooner (source: Roborock US store) - Shop on Amazon →
- Roborock main brush
$22.99 each on the Saros 20 Flow store page; no replacement interval listed (source: Roborock US store) - Shop on Amazon →
- Roborock 200 ml floor cleaning solution
$14.99 sale, $18.99 regular; use rate not listed (source: Roborock US store) - Shop on Amazon →
Check the part number matches your model before you order. Affiliate links.
Price history
Tracked dailyTracking started Oct 31, 2026 at $1,700.
Each day adds a point. Turn on a price alert to hear about drops.
Where to buy
- Amazon
- See price →
- Roborock US store
- $1,700 →
Affiliate links. We may earn a commission. It never changes our score. Disclosure
Pros
- Roller mop removed ketchup and sauce in testing
- Climbs double thresholds up to 3.46 in
- Dock washes the roller with near boiling water
- Strong pet hair handling with no hair balls
- Matter, Alexa, Siri and Google Home support
Cons
- High price at $1,699.99
- Corner and edge cleaning was weak in reviews
- App settings are hard to find
- Slow 150 min recharge
- Detergent sold separately
What independent reviewers found
- Floors came out about 90% clean with some crumbs left in corners. Mopping fully removed ketchup and barbecue sauce and left wood almost dry. It cleared a baby gate but got lost once and had underwhelming edge cleaning.
- House Digest · 9/10
- Australian review gave vacuuming 93%, mopping 93%, app 92% and features 93%. It cleaned dried jam and tomato sauce, needed two passes for Vegemite and struggled with crumbs near cabinets. Charging was slow.
- EFTM · 92%
Spec history
Checked dailyNo spec changes since we started tracking on Oct 31, 2026.
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Questions buyers ask
Can it get over tall door thresholds?
Roborock rates it for double layer thresholds up to 3.46 in. House Digest saw it climb a baby gate, though it landed hard.
Does it fit under low furniture?
The LiDAR retracts and Roborock lists a 3.54 in robot height, so it fits under furniture with more than that clearance.
How often do I change the dust bag?
Roborock says up to 65 days per bag. A 6 pack was $25.59 on the Roborock US store on 2026-10-30.
Guides and rankings with the Roborock Saros 20 Flow
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