Eufy
eufy Omni S2
- Autonomy
- IVEnvironmental
- Score
- 76/100Strong
- Readiness
- Ready Now
- Price
- $1,599.99list
Comparisoneufy Omni S2 and Roborock S8 MaxV Ultra
Roborock
Roborock S8 MaxV Ultra
- Autonomy
- IIIConditional
- Score
- 85/100Exemplary
- Readiness
- Ready Now
- Price
- $1,799list
Up to three
Autonomy Ladder
- IManual
- IIAssisted
- IIIConditional
- IVEnvironmental
- VGeneralized
All robot vacuums. Every figure below is placed against the whole class, so a gap can be read against how much the class itself varies.
Where each one suits you.
The conditions each robot was assessed against, side by side. Rows marked in gold are where these machines genuinely differ.
| Condition | eufy Omni S2 | Roborock S8 MaxV Ultra |
|---|---|---|
| Home size | ||
| Under 1,500 sqft | GoodCapable but exceeds compact-home needs; premium automation goes underused in smaller spaces. | Good210-minute runtime covers compact homes in one pass, but dock occupies significant floor space in tight apartments. |
| 1,500 – 3,000 | GoodCovers multi-floor homes efficiently; 130-minute runtime sufficient with resume capability. | GoodIdeal size for LiDAR mapping efficiency and dock placement. Achieves full coverage in single daily cycle. |
| Over 3,000 | GoodDesigned for large spaces; scheduled multi-zone runs or persistent operation handles coverage. | GoodMulti-cycle scheduling and dock workflow handles large homes efficiently. Room-by-room execution avoids battery drain. |
| Primary floors | ||
| Hard floors | GoodCore design and roller-mop system optimized for hard-floor homes. | GoodMopping and auto-dry dock excel on tile and wood. Hot-water heating prevents mildew; grout lines reduce effectiveness slightly. |
| Low / medium pile | Good30,000 Pa and roller-mop suit low carpet; hot-wash drying reduces moisture accumulation. | GoodManufacturer specs show automatic carpet detection and suction boost. Mopping disables on carpets to prevent water damage. |
| High pile / shag | PoorSuction and low-pile-optimized mop poor match for shag or high-pile; coverage suffers. | PoorOwner reports document suction loss on shag and thick carpets; obstacle detection struggles with deep fiber variation. |
| Mopping needs | ||
| Vacuum only | GoodStrong vacuum; the mop lifts or detaches when not needed. | GoodStrong vacuum; the mop lifts or detaches when not needed. |
| Light mopping | GoodActive mopping system covers routine floors easily. | GoodActive mopping system covers routine floors easily. |
| Frequent mopping | GoodPressure or rotating mop with self-wash is built for frequent mopping. | GoodPressure or rotating mop with self-wash is built for frequent mopping. |
| You want to… | ||
| Empty bin myself | GoodDock automation handles most consumables, but water-line inspection and gasket checks require quarterly attention. | GoodWeekly dock filter cleaning and monthly nozzle inspection align with hands-on maintenance style. Consumable-aware owners thrive. |
| Empty occasionallythey differ | GoodAutomated dock cycles reduce hands-on work; seasonal dock service needed. | DependsDock maintenance is mandatory weekly; neglecting 60-90 day bag replacement degrades mopping within 2-3 months. |
| Set-and-forgetthey differ | Depends12-in-1 dock minimizes consumable touch, but heating-element and water-seal failures may demand repair intervention. | PoorWeekly filter cleaning and dock care are non-optional; set-and-forget operation fails. Budget Level II vacuums suit hands-off preference. |
A robot being poor for a condition is a fact about fit, not a fault. “Depends” means the record names a limit worth reading, not that the answer is unknown.
What the score is built from.
Nine inputs across three pillars, each weighted as shown and each scored so more is better. A robot can lead on one and trail on another, which is the point of showing them apart.
Capability
Task completion16% of score
Does it finish the job it is sold to do, unattended
8075
- eufy Omni S280
- Roborock S8 MaxV Ultra75
18median 72 across 433 scored robots100
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
76100
- eufy Omni S276
- Roborock S8 MaxV Ultra100
0median 70 across 421 scored robots100
Edge-case recovery10% of score
Does it recover from the failures its category presents
2562
- eufy Omni S225
- Roborock S8 MaxV Ultra62
18median 52 across 320 scored robots100
Operating envelope4% of score
How far conditions can vary before performance drops
7275
- eufy Omni S272
- Roborock S8 MaxV Ultra75
28median 68 across 397 scored robots100
Dependability
Field failure rate16% of score
Documented hardware failures per owner-year
8591
- eufy Omni S285
- Roborock S8 MaxV Ultra91
6median 70 across 359 scored robots100
Software stability14% of score
Whether updates fix more than they break
6595
- eufy Omni S265
- Roborock S8 MaxV Ultra95
15median 65 across 342 scored robots100
Support longevity10% of score
Committed parts, service and updates, with dates
8594
- eufy Omni S285
- Roborock S8 MaxV Ultra94
0median 62 across 429 scored robots100
Ownership burden
Routine maintenance12% of score
Hands-on time it asks for in normal operation
8184
- eufy Omni S281
- Roborock S8 MaxV Ultra84
22median 67 across 434 scored robots100
Consumables8% of score
Parts that must be bought to keep it working
4983
- eufy Omni S249
- Roborock S8 MaxV Ultra83
8median 69 across 434 scored robots100
How far apart is a long way?
A number only means something next to the spread it sits in. Each track is the real range across every classified robot in the class, with the median marked.
Price217 with a published figure
$1,599.99$1,799
- eufy Omni S2$1,599.99
- Roborock S8 MaxV Ultra$1,799
$160median $799.99$2,599
Suction (mode not stated)210 with a published figure
30,000 Pa10,000 Pa
- eufy Omni S230,000 Pa
- Roborock S8 MaxV Ultra10,000 Pa
1,000 Pamedian 10,000 Pa42,000 Pa
Runtime187 with a published figure
130 min180 min
- eufy Omni S2130 min
- Roborock S8 MaxV Ultra180 min
60 minmedian 180 min360 min
Charge time165 with a published figure
270 min180 min
- eufy Omni S2270 min
- Roborock S8 MaxV Ultra180 min
90 minmedian 240 min420 min
Noise156 with a published figure
67 dB67 dB
- eufy Omni S267 dB
- Roborock S8 MaxV Ultra67 dB
43 dBmedian 67 dB80 dB
Height232 with a published figure
3.9 in4.1 in
- eufy Omni S23.9 in
- Roborock S8 MaxV Ultra4.1 in
2.6 inmedian 3.8 in7.8 in
Not compared, because fewer than two of these robots carry a published figure: Weight.
What the numbers leave out.
Written on each record, and the only thing here every robot on the site carries.
The trade-off
What each design gives up to be good at what it is good at.
eufy Omni S2
12-in-1 dock: solves every consumable task (empty, wash, dry, dispense), but spreads failure risk across electronics, pumps, tanks and thermal systems that need repair.
Hot-water washing with hot-air drying: eufy heats the wash water (70 C, listed as 140 F in US material) and dries the roller with 131 F air, which is what keeps a mop from souring between runs. It is also close to the whole of the $1,599 argument, and stations that dry with unheated air address the same problem more slowly for less.
Roborock S8 MaxV Ultra
Establishment time (30-45 min initial training, room marking) buys hands-off cycles (leave home, returns to dock, scheduled mopping prep).
All-in-one dock adds mopping and hot-water drying but increases weekly maintenance complexity (filter + nozzle + water-tank lifecycle).
Who each one is wrong for
Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.
eufy Omni S2
- Deep shag beyond the mop's lift
- The roller mop lifts 28 mm clear of the floor when carpet is detected, more than double the 13 mm on the S1, so ordinary and thick pile are isolated automatically. Pile deeper than that lift is the case the mechanism does not cover.
- Budget-conscious buyers
- $1,599 MSRP puts this at the top of the category, and consumables are the other half of the figure: eufy suggests a new roller mop every two months at $26.99, roughly $160 a year before brushes, filters and bags.
- Homes with limited space near a power outlet
- The 12-in-1 station is large (footprint roughly 24in x 20in) and needs a dedicated mains outlet and clear floor space. It does not need a water line or a drain: the 3.0 L clean and 2.0 L dirty tanks are hand-filled and hand-emptied, which is a trip to the sink every few runs instead.
Roborock S8 MaxV Ultra
- Frequent furniture rearrangement or clutter-heavy homes
- Dynamic layouts require map retraining; cluttered rooms with low-profile items confuse camera detection. Manual map updates add 15-20 minutes per change cycle.
- Budget-first or privacy-conscious buyers
- The purchase price is the barrier, not the running cost: official dock bags are about $4.30 each in Roborock's 6-pack, roughly $25 a year. On privacy, the app requires an account and maps and camera images sync to Roborock's cloud servers, with no user-facing local-only mode.
- Hands-off operation without dock maintenance
- Weekly dock filter cleaning, monthly nozzle inspection and periodic bag changes are not optional. Neglected dock maintenance shows up in mopping quality within 2-3 months.
- Homes with only hard floors or minimalist spaces
- Mopping capability adds complexity and dock footprint. Budget L2 vacuums better suited for straightforward hard-floor-only maintenance without wet-cleaning overhead.
What stays your job
The upkeep ownership hands back to you, whatever the autonomy level says.
eufy Omni S2
- Weekly: Refill the station’s 3.0 L clean water tank and empty the 2.0 L dirty tank; rinse the dirty tank rather than just tipping it.
- Monthly: Rinse the wash tray under the roller and clear hair from the roller brush and brush guard.
- Every 2 months: Replace the roller mop ($26.99), which is eufy’s suggested interval and the largest recurring cost on the machine.
- Every 3-6 months: Replace the filter set and the water tank filter; swap the side brushes when the bristles splay ($21.99 for two pairs).
- As needed: Replace the dust bag when the station reports it full, and the roller brush and brush guard when the brush is worn ($26.99).
- Before any long period unused: Empty both tanks and let the wash tray dry, so standing water does not sit in the station.
Roborock S8 MaxV Ultra
- After every use: Empty the mopping water tank, rinse the mop tray, check dock dust cap alignment.
- Weekly: Wash the dock filter, clear hair from the main brush and the FlexiArm side brush, inspect the spray nozzles for clogs.
- Monthly: Wipe the dock spray heads and wash tray with clean water, check suction, wipe the LiDAR window and the front camera. Water only: vinegar and descaling acid attack the dock’s pump and seals.
- Every 3-6 months: Replace main brush bristles (approximately $25 replacement cost).
- Every 60-90 days: Replace the dock’s 2.5 L disposable dust bag. Roborock sells the official 6-pack for $25.59, about $4.30 a bag, so bags run roughly $25 a year.
- Annually: Inspect all seals and water tanks for leakage and calibrate camera focus.
- As needed: Manual tangle removal from the side brush, remapping if furniture moves significantly, unclogging water nozzles. Refill the dock’s detergent reservoir with Roborock’s own solution only.
How much each of these is standing on.
Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.
| Robot | Evidence status | Sources reviewed | Last assessed |
|---|---|---|---|
| eufy Omni S2 | Pending | 4 | Sep 2026 |
| Roborock S8 MaxV Ultra | Verified | 15 | Sep 2026 |
Evidence status counts the sources behind a classification, not their kind. A high count can be maker documentation and price coverage, so read it as how much was reviewed rather than as independent testing. How we weigh evidence.
Keep going.
The full recordeufy Omni S2Specifications, evidence, the Fit Check in full, and every tracked change.
The full recordRoborock S8 MaxV UltraSpecifications, evidence, the Fit Check in full, and every tracked change.Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.
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