S20 Infinity
Yeedi's take on the Ecovacs X11: a roller-mop robot with a bagless dock that never needs dust bags. It's a very strong vacuum, especially with pet hair, but one lab test found its mopping weak on dried stains.
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The short version
The S20 Infinity is the flagship from Yeedi, the budget brand owned by Ecovacs. It shares most of its hardware with the Ecovacs Deebot X11 OmniCyclone: the same bagless dock that spins dust out into a washable bin, the same roller mop that rinses itself as it goes, and the same camera for spotting clutter. It sits above the cheaper S14 Plus, and Yeedi has since added the S20 Infinity Ultra with a pre-spray for stains.
The draw is vacuuming and low running costs. Testers found it excellent on carpet and pet hair, with no hair wrapped round the brush and no bags to buy. The trade-offs are small water tanks that need topping up every couple of runs, a small bin in the robot itself, and mopping that one lab test found weak on dried-on marks.
Our take: Buy it for a pet home with carpets and hard floors, where strong vacuuming and no bags matter more than perfect stain removal. Skip it if dried-on kitchen spills are your main problem: Vacuum Wars found the Ecovacs X11 OmniCyclone mopped far better in the same tests. If you'd rather not rinse a dust bin, pick a robot with a bagged dock.
Where it sits in Yeedi’s range
- S14 PlusCheaper model without cleaning solution or smart-home support
- S20 InfinityThis model
- S20 Infinity UltraAdds a pre-spray that soaks dried stains first
What reviewers found
Three home tests, one with lab-style measurements. Vacuum Wars bought one and measured some of the strongest suction and airflow it has recorded, with perfect pet-hair pickup, but very poor dried-stain scores. Homes & Gardens and Basic Tutorials were happier with its mopping, and Vacuum Wars itself saw normal mopping at home. All three praise the bagless dock. The small water tanks and the robot's small bin are the recurring complaints.
Vacuum Wars, lab test, Several weeks, Mar 2026 · Homes & Gardens, hands-on, A week of daily use, Nov 2025 · Basic Tutorials, hands-on, Nov 2025
A very strong vacuum
Vacuum Wars measured 89% sand removal from carpet against a 78% average, 100% of flattened pet hair and no hair at all wrapped round the brush. Its suction and airflow figures beat the Ecovacs X11 it's based on. Homes & Gardens found it picked up lentils and cereal on hard floor and carpet, though flour and sugar took several passes. Basic Tutorials saw oats and cat litter cleared, with only a trace of fine litter left in carpet.
Mopping: the tests disagree
Vacuum Wars got one of the lowest dried-stain scores it has seen from a mid-range robot, far behind the X11 with the same roller, because the S20 used much less water. At home, though, it mopped as well as the X11, and Vacuum Wars suspects a firmware issue since fixed. Homes & Gardens found it cleared ketchup and mustard in two passes, leaving thin lines at the edges. Basic Tutorials liked the roller but saw small uncleaned strips at edges and corners.
No dust bags to buy
The dock spins dust into a washable bin instead of a bag. Homes & Gardens only needed to empty it about once a month. Vacuum Wars found less dampness in the bin than on the X11, but hair sometimes caught between the cyclone and the housing, which meant removing the filter to clear it. The robot's own bin is small at 220ml, so it may clog if it fills before docking. Expect a quick rinse now and then instead of buying bags.
Small tanks, frequent refills
The dock washes and dries the roller often, which uses water. Homes & Gardens had to fill the clean tank and empty the dirty one every two or three runs, and every other clean in a busy home. Basic Tutorials reckons the 3.2-litre clean tank covers three or four full cleans in a medium home. There's no plumbed-in option mentioned by any tester, so budget for regular trips to the sink.
Finds its way round clutter
Vacuum Wars saw it avoid 21 of 24 test objects, better than average, and it covered the floor almost twice as efficiently as the X11. Homes & Gardens found it spotted objects quickly and liked a setting that gives pets a wider berth. Basic Tutorials found the mapping good without a laser turret, but not quite at the level of flagship robots that have one. There's no live camera view in the app, per Vacuum Wars.
All three reviews cover the S20 Infinity, not the newer S20 Infinity Ultra.
Prices
Where to buy the S20 Infinity in United States
No verified United States price in the last 7 days. We re-check daily.
We’re still looking for more United States retailers for this model. Prices shown are read from each seller’s own page.
Before you buy
The questions people ask about this one
Will it avoid cables and pet mess?
Better than most. It uses a camera with 3D sensing, and Vacuum Wars saw it avoid 21 of 24 objects across its basic and torture tests. Homes & Gardens found it recognised objects quickly. Nobody tested real pet mess, so still pick up anything you'd hate to see smeared.
Does it fit under low furniture?
Under most sofas and cupboards. It has no laser turret, and Basic Tutorials measured it at just under 10cm tall, low enough for most of their furniture. Homes & Gardens liked its flat top for getting under things. Measure your lowest gap first.
How often do I have to empty or refill anything?
The dock's dust bin needed emptying about once a month for Homes & Gardens, with no bags to buy. The water tanks are the chore: they needed filling and emptying every two or three runs. Vacuum Wars occasionally had to clear hair from inside the bin.
Can it leave the mop off the carpet?
It lifts the roller by 10mm when it detects carpet, so it can vacuum rugs and mop hard floors in one run, per Vacuum Wars. Homes & Gardens used it on carpet without the rug getting wet. Very deep rugs weren't tested.
How does it handle dried-on stains?
The tests disagree. Vacuum Wars recorded very poor dried-stain and coffee scores in its studio, far behind the Ecovacs X11 with the same roller, but saw normal results at home and suspects a fixed firmware bug. Homes & Gardens cleared ketchup and mustard in two passes. Expect to run it twice on stubborn marks.
Does it work with smart home apps?
Yes. Homes & Gardens reports it's Matter-certified, so it works with most ecosystems and voice assistants, and Vacuum Wars notes third-party voice control in the Yeedi app. There's no live camera view in the app.
Compare with
Head to head
ECOVACS DEEBOT X11 OmniCyclone vs S20 Infinity
Our verdict: Same dock, roller and obstacle camera. Choose the S20 Infinity for vacuuming: Vacuum Wars measured stronger suction, better carpet cleaning and faster coverage. Choose the X11 if mopping comes first, since it scored far higher on dried stains in the same lab tests.
DEEBOT X11 OmniCyclone
The Ecovacs twin, with strong hard-floor vacuuming and better lab mopping scores.
Testers found its bagless bin messy, and one saw it barely dent a dried stain.
DEEBOT X12 OmniCyclone
Reviewers praised its roller mop, obstacle avoidance and bagless dock.
Vacuuming results are more divided than the feature list suggests.
Omni E25
Independent tests found it genuinely good with pet hair, with a roller mop and automated dock.
Hard stains, rug edges and occasional support problems are worth checking.
Full specifications
Figures come from the manufacturer’s product page unless a source is named. A blank means nobody we trust has confirmed it.
Owner reviews
Own a S20 Infinity?
Tell people how it’s held up: cleaning, maintenance, faults and support. Owner reviews are shown separately from expert tests and never mixed into the score.
Sources
Everything cited on this page. Expert scores are shown as the reviewer gave them.
- Vacuum Wars: Yeedi S20 Infinity Review: This Bagless Robot Vacuum Takes on a FlagshipLab test, Several weeks
- Homes & Gardens: I Tested the Yeedi S20 Infinity Robot Vacuum · 4.5 / 5Hands-on, A week of daily use
- Basic Tutorials: YEEDI S20 Infinity test: Bagless all-rounder with mop rollerHands-on
- Vacuum Wars: Yeedi S20 Infinity Robot Vacuum Launches with 19,500 Pa Suction and Self-Washing DockNews
- Yeedi: Yeedi by ECOVACS S20 Infinity listing (Yeedi's Amazon store)Manufacturer