Pickori's Take
- The Eufy Omni S2 is Pickori's best robot vacuum for a cluttered home and one of the few flagships that combines exceptional hazard avoidance with genuinely strong carpet and pet-hair cleaning. It earns its $1,600 price only where avoiding cords, toys, and pet accidents decides whether the robot can run unattended.
- Tidy homes should save. The Ecovacs T90S Pro Omni is the sharper value, the Dreame X60 is Pickori's broader mixed-floor flagship, and the Roborock Saros 20 Flow is the more composed premium hard-floor choice.
- The avoidance evidence is the best in our top ten, with a perfect 24 of 24 controlled obstacle result. Long-term ownership still showed dark-room confusion, doorway bumps, and remapping, so recognizing objects well doesn't make it a flawless navigator.
- Carpet is no longer the compromise. Measured results of 87 percent embedded-sand recovery, 88.5 percent flattened pet-hair pickup, and zero wrap with seven-inch hair make this a credible machine for shedding pets and long-haired households.
- The roller mop is hygienic and smart with wet spills, but it uses so little water that it falls below average on dried stains. Route efficiency and tall thresholds are also weak spots, and the dock reduces chores without making the robot maintenance-free.
Obstacle avoidance: careful about objects, less graceful about homes
The Omni S2 sees with an RGB camera paired with 3D time-of-flight sensing, which measures distance by timing reflected light, plus its own illumination for dim rooms. Eufy claims recognition of more than 200 object types and anything taller than 1 cm. The results support the hardware. In one controlled course, the S2 avoided all 24 objects, including the high-difficulty ones, and several home evaluations reported clean detours around cables, shoes, clutter, and simulated pet waste. No robot in our top ten has stronger evidence for leaving hazards alone.
Recognizing an object is a different skill from moving through a house gracefully. A 150-day owner evaluation logged dark-room confusion, doorway bumps, repeated remapping, and a fumble around a wet spill. Our conclusion is that the S2 rarely makes the expensive mistake of eating a charger cable or dragging a mess across the floor. It can still be clumsy getting from room to room.
How the Omni S2 handles real household workloads
Robot vacuum ownership often involves a ritual nobody mentions in the ads: before the autonomous cleaner can clean, someone walks the house picking up charging cables, sock balls, toy cars, and anything the dog might have left behind. The Omni S2 exists to shorten that walk. Its camera and 3D time-of-flight sensor (a depth sensor that measures distance by timing reflected light) gives it unusually strong evidence around clutter. Its redesigned vacuum system also fixes the original S1 generation's weak carpet performance. Here is how that plays out across the jobs a busy home actually generates.
| Workload | Outlook | What to expect |
|---|---|---|
| Cords, toys, and shoes | Excellent | This is the S2's reason to exist. In one controlled obstacle course it avoided all 24 objects, including the high-difficulty ones, and several home evaluations reported the same care around cables, shoes, and general clutter. Eufy claims recognition of more than 200 object types and anything taller than 1 cm, which is a manufacturer figure, but the measured results support the spirit of it. For a family that currently does a pickup lap before every run, this is the difference between scheduling the robot while you're out and only running it while you're watching. |
| Pet mess risk | Very good, not a guarantee | Home evaluations found the S2 steered around simulated pet waste reliably, which matters more than any suction number in a house with a puppy or an elderly cat. A separate 150-day owner evaluation, however, logged occasional failures around messes, including a wet spill. Treat the S2 as the robot least likely to turn an accident into a whole-floor disaster, not as one that has made the risk disappear. That is still a meaningful improvement, but you should keep it in mind on days when accidents are likely. |
| Embedded carpet grit | Strong | Here the S2 earns its place as a real upgrade. One controlled evaluation measured 87 percent recovery of sand worked into medium-pile carpet, up from 61 percent for the Omni S1. That jump means you no longer buy Eufy's avoidance and accept mediocre rugs as the cost. Ignore the 30,000 Pa headline, since brands don't measure pressure the same way. The 100 air watts figure, which describes actual airflow, plus the brush design and measured pickup, explain the result far better. |
| Pet hair and long hair | Excellent | The DuoSpiral split main brush has unusually credible evidence behind it. The same controlled test measured 88.5 percent pickup of flattened pet hair and zero wrap with seven-inch strands. Those two numbers together matter for shedding dogs and long-haired households, where cutting hair off a roller every few days quietly cancels the convenience of automation. Few flagships offer both strong hair pickup and measured tangle resistance, and this is a big part of why the S2 suits pet homes so well. |
| Hard-floor crumbs and dust | Very good | Routine debris is not a worry. One exact-model home evaluation averaged 99 percent pickup across rice and flour. A controlled test noticed fast side brushes scattering some fine particles on the first pass, which the robot then collected on its second. If you watch it work, the first sweep through spilled flour may look messy. By the end of the run the floor is clean, so this is a cosmetic quirk rather than a cleaning gap. |
| Wet spills versus dried stains | Good, with a split | The HydroJet roller is a spinning cylinder fed fresh water continuously while a squeegee strips dirty water into an onboard tank. Spinning pads tend to spread a mess around, so the roller is cleaner and more sensible for juice or spilled water. Dried residue is a different matter. In one controlled stain test the S2 scored 82 against a 108 baseline and released 0.35 grams of water versus a 1.07-gram average. Its 15 N pressure and 240 RPM don't overcome that thrifty water output, and the older S1 Pro scrubbed harder. |
| Thresholds, rugs, and dark rooms | Inconsistent | Eufy rates the lifting chassis for 1.38-inch single and 1.65-inch double thresholds, but one controlled test cleared a 32 mm lip only once in three tries. A long-term owner also reported corrections, occasional sticking at rug edges, doorway bumps, and confusion in dark rooms despite low-light illumination. Recognizing a sock is a different skill from navigating a whole house gracefully. If your home has tall transitions or curled rugs, check them against these results before you buy. |
| Large multi-room homes | Adequate | Coverage is the S2's quietest weakness. One controlled evaluation measured 0.64 square meters per minute and estimated about 1,088 square feet per charge, both modest for this class. Recharge-and-resume finishes bigger homes eventually, so nothing goes uncleaned, but runs take longer than they would on the most efficient rivals. The same owner evaluation also reported occasional remapping, which adds friction in sprawling layouts. This robot is careful rather than quick. |
Taken together, the pattern is clear. The S2 is at its best wherever a bad decision on the floor is costly: a cable, a toy, a pet accident, a hank of long hair. It is merely competent where speed, dried grime, and awkward transitions decide the outcome.
That is exactly the trade a cluttered household should want. A tidy apartment would be paying for strengths it rarely uses.
Carpet and pet hair: the old compromise is gone
Eufy rates the S2 at 30,000 Pa, but pascal ratings aren't standardized across brands and say little about cleaning on their own. The 100-air-watt figure is more useful because it describes how much air the robot actually moves. Moving air is what lifts grit out of carpet fibers, provided the brush keeps contact with the pile. Measured pickup matters more than either number.
On that test, the S2 recovered 87 percent of embedded sand from medium-pile carpet. The original Omni S1 managed 61 percent on the same test. Flattened pet hair came up at 88.5 percent, and seven-inch strands left zero wrap on the DuoSpiral split main brush. Home evaluations described the same strength in routine carpet cleaning. For shedding pets or long-haired households, that last result decides whether you keep reaching for scissors every few days.
Everyday debris: thorough, if a little messy at first
Crumbs, cereal, and dust aren't a worry. One exact-model evaluation averaged 99 percent pickup across rice and flour. Another found reliable debris collection overall, but the fast side brushes scattered some fine particles on hard floors before a second pass collected them. If you watch the first lap, it can look untidy. By the end of the run, it usually isn't.
The extending CornerRover side brush is Eufy's answer to edges and corners. Home evaluations praised edge reach, but treat Eufy's specific edge-coverage claims as marketing until someone measures them.
The roller mop: hygienic with spills, gentle on dried stains
Spinning pads reuse the same damp cloth for the whole run, so a pad that hits a spill partway through carries it into the next room. The S2's HydroJet 2.0 roller works differently. It sprays fresh water through 32 holes as it turns, and a squeegee strips the dirty water into an onboard tank. That design is well suited to wet messes, because the liquid it collects comes off the floor and stays off.
Dried, sticky residue is where expectations need adjusting. Eufy quotes 15 N of downward pressure and up to 240 RPM, but in a controlled dried-stain protocol the S2 scored 82 against a 108 baseline. It also released only 0.35 grams of water against a 1.07-gram average. The conservative water output keeps floors from turning soggy, but it also takes away cleaning force. Home evaluations found routine mopping good, and repeated passes do help. Call it hygienic and capable, not a scrubber for set-in grime.
Routing, coverage, and thresholds
The S2 is cautious rather than quick. One controlled evaluation measured route efficiency of 0.64 square meters per minute and estimated about 1,088 square feet per charge, both modest for a flagship. Recharge-and-resume lets it finish large homes eventually, so plan on longer runs, not unfinished ones.
Thresholds are the least predictable part of the package. The chassis lifts for thicker carpet and transitions, and the roller rises about 28 mm. Eufy rates the robot for 1.38-inch single thresholds and 1.65-inch double thresholds. One home found it broadly capable, but a controlled test cleared a 32 mm lip only once in three tries. The long-term owner also saw corrections and occasional sticking at rug edges. At 3.78 inches tall, it also needs a reasonable gap to clean under low furniture. Measure your tallest doorway and lowest sofa before trusting the spec sheet.
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Cyclone filtration and the dock: chores move, they don't disappear
Cyclone separation spins incoming air so heavier dust drops out before it reaches the five-layer filter. In long-term ownership, that kept fine dust from packing the filter as fast as conventional designs. The trade is that the cyclone itself needed disassembly and cleaning after roughly 90 days, and sooner in heavy-shedding homes. Eufy's claims about suction longevity and dust-mite removal are manufacturer statements, not independent results.
The tall, narrow dock is genuinely helpful. It washes the roller with 140 F water, dries it with 131 F air, doses detergent, empties dust, and shows status on an LCD. After several weeks of daily use, one home reported the roller, bin, and dock notably clean. You still fill and empty water tanks unless you buy the separate auto-refill and drainage kit, and you still replace bags and detergent. Eufy itself recommends weekly or biweekly cleaning of the tank, bin, roller, brushes, and sensors.
S2 versus S1 Pro: a real upgrade, with one asterisk
For nearly every buyer, the S2 is the better Eufy. It adds a lifting chassis and tangle-resistant brushes, delivers far stronger carpet and pet-hair results, and backs up its obstacle avoidance with better evidence. The asterisk is dried stains. In one controlled comparison, the S1 Pro scrubbed harder, probably because it put down more water. If you find the S1 Pro heavily discounted and live in a hard-floor-only home with sticky messes, it remains a sensible buy.
Omni S2 vs Ecovacs Deebot T90S Pro Omni
The $900 Ecovacs is the sharper value for a reasonably tidy home with mostly hard floors. It also uses a continuously rinsed roller and pairs it with a highly automated dock, so you aren't giving up the core mopping idea by saving $700.
That $700 buys something specific with the Eufy: a perfect obstacle-course result, much stronger measured carpet recovery, better pet-hair pickup with no wrap, and cyclone filtration. You don't get more dirt removal on clear tile. Pick the Eufy if clutter or rugs are routine. Otherwise, the Ecovacs is the smarter buy.
Omni S2 vs Dreame X60 Max Ultra Complete
Choose the Eufy when cords, toys, shoes, and pet hazards are what stop you from running a robot unattended. That is the problem it solves better than anything else in our top ten.
Choose the Dreame if your floors are reasonably clear and you want the broadest overall performance. It is Pickori's stronger all-around mixed-floor flagship, with better coverage of embedded pet hair, low furniture, and difficult thresholds. If you can't decide whether clutter is your main problem, it probably isn't, and the Dreame is the better default.
Omni S2 vs Roborock Saros 20 Flow
The Eufy wins on carpet and pet-hair evidence, and its clutter avoidance is the reason to buy it. Homes with shedding animals, rugs, and a lot of floor clutter should lean this way.
The Roborock is the more composed hard-floor flagship. Its software is more mature, it handles thresholds capably, and it has its own self-cleaning roller, though it relies on a feature-heavy dock. If your floors are mostly hard surfaces and fairly clear, and you value smooth routing and an app that behaves, the Saros is the more polished choice.
Is perfect obstacle avoidance worth $1,600?
Only if avoidance failures are what currently keep your robot docked. If you clear the floor before every run, or come home to a snarled cable or a smeared accident often enough that you stopped scheduling cleanings, the S2's caution pays for itself. The real benefit is a robot you can actually leave running.
If your floors are already clear, you're paying flagship money for a skill you won't use, along with modest route speed, inconsistent thresholds, and gentle dried-stain mopping. In that home, spend less or spend on a better all-rounder.
Who this product fits
The family with a toy-strewn living room
If your evenings end with Lego, charging cables, and a stray sock across the floor, this is the robot to buy. The S2's caution is the reason it can run while everyone is at school or work instead of waiting for someone to tidy up. It also cleans the play rug properly, which the first-generation design couldn't promise.
The pet household
Shedding dogs, long-haired cats, and the occasional accident are the strongest case for spending $1,600. Fur pickup on carpet is excellent, the brush resists wrapping, and the hazard avoidance reduces the risk you fear most. Reduces is not the same as eliminates. Keep watching the robot during its first few weeks, especially around feeding areas and in dimly lit rooms.
The tidy apartment owner
Mostly hard floors, little clutter, and a robot that rarely meets an obstacle? Then the S2's main talent goes unused. The Ecovacs T90S Pro Omni will keep that apartment just as clean for about $700 less, and that difference pays for years of bags, detergent, and replacement rollers.
The large home with tricky transitions
This is where it gets more complicated. The S2 recharges and resumes, so big floor plans do get finished, but its route efficiency is modest. Tall doorway lips can take several attempts, and curled rugs can catch it. If speed and smooth room-to-room travel matter more to you than clutter, the Dreame X60 suits that home better.
What else to compare
The Omni S2 wins a specific argument: it is the robot that best handles a floor nobody has cleared. If clutter isn't your main problem, other flagships divide the field differently, and some of them cost far less. Here is where each one makes more sense.
Ecovacs Deebot T90S Pro OmniA much less expensive roller-mop flagship for tidy, hard-floor-heavy homes that can accept less dependable clutter avoidance
Roborock Saros 20 FlowA more composed premium all-rounder for hard floors, difficult transitions, and shoppers who value Roborock's mature app and routing
Dreame X60 Max Ultra CompletePickori's broader mixed-floor flagship for carpet, embedded pet hair, low furniture, clutter, and difficult room transitionsEufy Omni S2 FAQ
Is the Eufy Omni S2 worth $1,600?
Yes, if cords, toys, or pet hazards currently stop your robot from running unattended. In that home, fewer failed runs and fewer messes justify the premium. In a tidy home, cheaper flagships clean comparably and the extra money buys little you'll actually notice.
Will the Omni S2 avoid pet waste?
Its avoidance record is the best in Pickori's top ten, including simulated pet waste. Even so, careful object recognition isn't a guarantee. Long-term ownership turned up occasional trouble in dark rooms and around messes, so lighting and some early supervision still help.
How is the S2 better than the Omni S1 Pro?
Carpet cleaning, pet-hair pickup, tangle resistance, lifting hardware, and obstacle avoidance all improve substantially. The S1 Pro scrubbed dried stains harder in one controlled comparison, so a heavily discounted S1 Pro can still make sense in a home with only hard floors.
Is the roller mop good at dried stains?
It is capable but not exceptional. The roller is hygienic and very good with wet spills, but its sparing water use leaves old, sticky residue partly behind. If dried messes are your biggest frustration, a more aggressive scrubber will serve you better.
Does the dock make the robot maintenance-free?
No. It washes and dries the roller, doses detergent, and empties dust. You still handle the water tanks, dust bags, and detergent, and you still periodically clean the cyclone, filters, brushes, sensors, and dock parts.
Can the Omni S2 fit under my furniture?
At 3.78 inches tall, it clears many beds and sofas but not the lowest ones. Measure the gap with a ruler before ordering, especially if those spaces are where dust and pet hair tend to collect.
Do I need the plumbing kit?
No, but it is a worthwhile upgrade if you can install it. The separately sold auto-refill and drainage kit removes the most repetitive chore left, which is carrying the water tanks back and forth.
The bottom line
Buy the Eufy Omni S2 if your floor is the reason your robot vacuum can't run alone. It is the most careful machine in our top ten, and it now cleans carpet and pet hair well enough that the caution costs you nothing in pickup.
If your floors are already clear, spend less. The S2 is worth $1,600 only when it changes whether you can leave the house and let it work.
Sources and research notes
Specifications come from manufacturer documentation. Measured results are attributed to independent evaluations.
- Eufy Robot Vacuum Omni S2 product pageEufy
Official US product identity, manufacturer price, suction and airflow, brush system, filtration, roller design, obstacle hardware, threshold claims, dock functions, maintenance guidance, and accessory options.
- Eufy Omni S2 reviewVacuum Wars
Exact-model carpet, pet-hair, hair-wrap, obstacle, mopping, navigation-efficiency, threshold, dock, and hard-floor observations.
- Eufy Omni S2 reviewTechRadar
Several-week home-use observations covering wet and dry cleaning, app experience, dock ownership, thresholds, carpet, mapping, and a pet household.
- Eufy Omni S2 reviewExpert Reviews
Exact-model rice and flour pickup, stain detection, carpet cleaning, obstacle behavior, mapping artifacts, battery use, thresholds, price, and comparison with the Eufy E25.
- Eufy Omni S2 150-day reviewVacubots
Long-term exact-model ownership evidence on cyclone maintenance, carpet transitions, hard-floor heavy debris, mopping, navigation, remapping, software, and app limitations.