Compare eufy Robot Vacuum Omni S1 Pro vs Eufy S2 Omni

Ease of use was positive, with the app described as easy to use and well laid out.

Everyday use is straightforward once the home is mapped. Clear controls, scheduling and extensive dock automation let the robot operate with little supervision.

Carpet hair pickup was weak in the pet-hair test, where it left the most hair tufts.

Carpet hair pickup is consistently strong, with excellent results on pet fur and long hair. The detangling design trades a little peak agitation for far less maintenance.

Clogging was a caveat in a stress test where the S1 Pro was the only unit to clog at an extreme fluff load.

The multi-cyclone system prevents fine dust from rapidly clogging the filter. Suction stayed strong even after substantial debris collection.

The onboard dust bin was viewed as somewhat small.

The dock’s disposable bag can hold roughly two months of debris, reducing how often it needs attention. That supports the S2’s hands-off appeal.

Odor control had a maintenance caveat because residual dirty water could smell if the robot was not used daily.

The fragrance system is polarizing: some homes noticed a pleasant, subtle freshness, while others could barely detect it. Dirty-water odors still require regular tank rinsing.

Medium-pile carpet pickup was below average in one rice pickup test.

Medium-pile carpet pickup is consistently strong, including embedded dirt and pet hair. It performs close to the better carpet-focused robots in normal use.

Tangle resistance was mixed: the vacuum brush tangled with long hair in one test, but another reviewer saw no mop-drive hair wrap.

Hair resistance is one of the strongest areas of agreement. The split DuoSpiral brush routinely finishes long-hair and pet-heavy cleaning with little or no wrapping.

Maintenance was not fully hands-off because tanks, filters, and dirty-water parts still needed recurring attention.

Maintenance is generally low because the dock washes, dries and empties automatically, while cyclonic filtration keeps parts cleaner. Roller trays and dirty-water tanks still need periodic rinsing.

Small rug handling was good in one review, with the mop lift clearing small rugs in testing.

The S2 handles area rugs exceptionally well, climbing thicker piles while avoiding tassels and lightweight mats. It is less likely to bunch, drag or become trapped by rugs.

Pet-readiness was supported by object avoidance around dog waste, though separate carpet hair pickup evidence was weaker.

Pet owners benefit from excellent hair pickup, minimal brush tangling and a dock that can move dense fur without clogging. The sanitizing mop system also suits homes where pets track in dirt.

Versatility was helped by easy switching between vacuum-only and vacuum-and-mop modes.

The S2 works well across hard floors, short carpet, medium carpet and many rugs. Its vacuum-and-mop design makes it a strong all-rounder for mixed-floor homes.

Large hard-floor debris intake was strong, with reviewers reporting high pickup and broad debris handling.

The S2 handles mixed debris well, but grouped cereal and other bulky pieces can expose inconsistent approach behavior. Most remaining debris is recovered with additional coverage.

The dock was praised as a brilliant use of space despite its unusual vertical form.

The tall tower dock is narrower and easier to service than many wide stations, but it needs considerable vertical wall space. It works best where height is less restrictive than floor width.

Wet-spill handling was a standout in some tests, but one reviewer warned against large wet spills because there is no mop-only mode.

The continuously cleaned roller is particularly effective on fresh spills because it extracts liquid instead of spreading it. Wet messes are one of the system’s best use cases.

Mapping and path efficiency were praised for coverage, easy map editing, and reliable room division.

Mapping is fast and generally accurate, with useful 3D room and furniture recognition. Path efficiency is less consistent, and some tests found slower routes or unnecessary circling near complex edges.

Crevice and groove cleaning was positive overall, especially in plank joints, though one test called it only decent.

Strong airflow reaches dust and litter in hardwood seams and floor grooves. This is a meaningful advantage on textured or imperfect hard floors.

Large debris handling on hard floors was strong, with reviewers saying it picked up extra-large debris.

Large debris pickup is usually immediate and controlled, though some tests found cereal pieces scattered or avoided. A second pass may be needed for grouped bulky debris.

Mop lifting was mixed, keeping medium-pile carpets dry in one test but raising too late over carpet corners in another.

The 28 mm mop lift protects most carpets and supports mixed-floor cleaning in one run. Very thick carpet can still make light contact because the measured lift includes suspension travel.

The clear front water tank made water level checks easy at a glance.

The water tanks are easy to access and generously sized, but heavy mopping can require refilling and emptying every few runs. Large single-floor homes may need more frequent tank service.

Hard-floor pet-hair and debris pickup was described as effective in a flagship comparison.

Hard-floor hair pickup is excellent, including long human hair and pet fur. The debris moves cleanly into the suction path instead of wrapping around the rollers.

The detergent/liquid system was praised for removing the guesswork from premixing solution.

Automatic detergent dosing and controlled water delivery keep the mopping system supplied without manual measuring. The liquid system supports consistent cleaning across scheduled runs.

The lower-profile design helped the robot reach under more furniture.

The robot’s low body reaches beneath beds, chairs and many cabinets while continuing to navigate reliably. It performs useful cleaning in places that are awkward to reach manually.

Hard-floor fine pickup was praised as excellent in at least one comparison review.

Fine-dust pickup is strong overall, helped by sustained airflow and effective filtration. Fast side brushes can scatter light particles on the first pass before the robot recovers them.

Dried-on stain removal was a major strength across tests, with the S1 Pro leading or near-leading mopping stain results.

Dried-stain removal is generally strong on everyday sauce, coffee, paw prints and jam, but tougher controlled tests produced mixed results. It is effective routine mopping rather than a guaranteed replacement for heavy scrubbing.

Stuck resistance was mixed: the low-profile design helped avoid getting stuck, but longer pile rugs caused at least one issue.

The lifting chassis handles normal thresholds and thick rugs well, but unusual obstacles and very tall transitions can cause hesitation. Low furniture is another occasional trapping risk.

Overall sentiment was very positive for mopping, design, navigation, and hard floors, with recurring caveats around carpet and edge performance.

The S2 earns broad praise for suction, mopping, hair handling and dock automation. Its premium price, inconsistent edge work and uneven navigation keep it from being the best fit for every home.

Streaking and residue control were major strengths, especially compared with spinning-pad systems.

Hard floors usually dry without visible streaks or residue. Controlled water output and the continuously cleaned roller leave a consistent finish.

Obstacle avoidance was one of the clearest strengths, including a rare perfect score and strong real-world avoidance.

Obstacle avoidance is usually excellent, including cords, pet waste and small household objects. A few tests still found collisions with dark items, toys or objects encountered immediately after a threshold.

Emptying and mess control were strong, with the dock completely emptying the dust bin in testing.

The self-empty dock handles dense hair and packed debris without clogging in normal use. An overfilled bin may occasionally require a second empty cycle.

Reviewers repeatedly framed the S1 Pro as innovative because of its roller mop, low-profile navigation, and distinctive dock design.

The built-in fragrance module and onboard multi-cyclone system distinguish the S2 from most competitors. Both features make the product feel genuinely different rather than merely more powerful.

Furniture navigation and maneuverability drew strong praise, including avoiding contact and understanding tight spaces well.

Movement is smooth and responsive, without the jerky corrections seen in some robots. It transitions through rooms and around furniture confidently.

Corner cleaning was mixed: the square shape helped in theory, but cautious navigation and missed areas limited results.

The extending side brush improves corner pickup and often reaches debris that fixed brushes miss. Results depend on how aggressively the robot approaches the wall.

Edge and baseboard mopping was a weak spot, with multiple reviewers noting it did not clean right up to baseboards or walls.

Edge performance varies more than the central cleaning results. Some units clean close to baseboards, while others leave visible gaps because the robot rides too far from walls.

Suction evidence was mixed: reviewers praised above-average suction and easy pickup on hard floors, while one comparison review called its suction a little low.

Suction is the S2’s clearest strength, with strong pickup across hard floors, rugs and embedded carpet debris. Multiple long-term tests also found that airflow stayed consistent as the bin and filter accumulated dust.

Comparative performance was strong for cleaning innovation and mopping, though one ranking placed another robot ahead overall.

Compared with its predecessor and current flagships, the S2 clearly improves hair handling and carpet mobility. It is less dominant in deep-carpet agitation, software features and value.

The ozone/sanitizing water system was treated as a notable cleaning feature, though evidence was mostly tied to the water system rather than independent lab verification.

Electrolyzed water, hot washing and continuous roller cleaning give the S2 unusually strong hygiene features. The system is especially appealing for homes with children or pets.

The automated dock made ownership easier by handling major cleaning-cycle tasks with minimal user work.

The automated dock, schedules, self-cleaning mop and reliable mapping make daily cleaning exceptionally convenient. Most routine work is reduced to servicing water tanks and consumables.

Noise was described as roughly average in one dock/vacuum sound test rather than unusually quiet or unusually loud.

The robot is acceptable on lower settings but becomes noticeably loud at maximum suction. Buyers sensitive to noise will likely prefer scheduled daytime runs or reduced power.

Mopping performance was the strongest consensus positive, with multiple reviewers calling it best-in-class or top-tier.

Mopping is the product’s signature strength, producing clean, streak-free hard floors with continuous fresh water and firm downward pressure. Difficult grout and severe dried stains can still require manual work.

The self-cleaning cycle impressed in dock washing tests and left the roller looking clean.

The roller is washed continuously while mopping and then cleaned and dried again at the dock. This keeps it fresh, reduces smearing and minimizes hands-on mop care.

Privacy controls were a relative strength because the camera was not available as a live video feed in the app.

Cloud-dependent integration limits fully local privacy and control. Native Matter support provides a partial workaround for smart-home users.

The app and automation story was mixed: the apps were solid, but yui lacked some integrations and advanced options.

The app offers clear maps, schedules, room controls and adjustable cleaning settings. Core automation works well, although smart-home commands and advanced customization trail some rivals.

Controls were considered useful and convenient, especially the base controls for switching cleaning modes.

The dock display and app controls are clear, responsive and easy to understand. Angled controls and visible status information reduce the need to bend down or guess what the robot is doing.

Value-for-money was helped by a flagship price that was lower than some rival flagships.

Value depends strongly on priorities. It makes sense for frequent hard-floor mopping and heavy hair, but cheaper robots can match parts of its performance with less maintenance.

Price was a tradeoff: reviewers called it high, but also noted it undercut some competing flagships.

The flagship price is the most consistent hesitation. Strong cleaning and automation help justify it, but several less expensive robots deliver similar results in selected areas.

Docking and auto-empty reliability were strong, with reviewers reporting near-complete or complete bin emptying.

The UniClean station is consistently praised for reliable emptying, mop washing, drying, refilling and detergent dosing. It is among the most complete and dependable docks in the category.

Reviewers consistently liked the futuristic, distinctive design and said it looked attractive in the home.

The translucent top, glowing ring and slim tower give the S2 a distinctive premium look. Its design feels more like modern home technology than a bulky cleaning appliance.

The low-profile design was praised for reducing height and improving access under furniture.

The robot fits under most ordinary furniture despite its advanced sensors. Its low profile expands useful cleaning coverage in bedrooms and living areas.

The package includes useful starter supplies such as cleaning solution, fragrance modules and a spare dust bag. The extras make the initial setup more complete.

The adaptive chassis lift is highly effective on thick rugs and carpet transitions. It raises the body, increases suction and reduces the chance of becoming stranded.

High-pile performance is much improved, with effective chassis lifting and strong suction on plush rugs. Deep agitation is not class-leading in every test, so carpet-focused homes should weigh that tradeoff.

Low-pile carpet pickup is very good, including ordinary dust, crumbs and pet hair. It cleans these surfaces confidently without the mobility problems of the older model.

Child lock is useful for preventing accidental dock commands, but it also limits the convenience of the touchscreen. Households with children may rely more heavily on the app.

Dirty-water sensing can trigger an additional cleaning pass when the extracted water remains heavily soiled. This adds useful automation for messier rooms.

Cyclonic separation keeps the filters unusually clean and contains fine dust effectively. Several extended-use tests found little visible buildup or suction loss.

The floor remains lightly damp after mopping but not dangerously wet. Drying is reasonable for routine hard-floor cleaning.

Hard-floor seal and crevice pickup were decent rather than class-leading.

The center hair channel works as intended, directing strands toward the suction port instead of trapping them. Test rollers remained nearly free of wrapped hair.

Low-light operation is reliable enough for overnight or early-morning cleaning. The robot can navigate dark rooms without needing the household lights turned on.

Heated mop washing and hot-air drying improve roller hygiene and reduce lingering moisture. The dock prepares a cleaner mop for the next run with little manual effort.

The sanitized mopping system and strong avoidance of cords and household clutter make the S2 appealing for families. Cleaner floors provide extra reassurance where children play.

Runtime ranges from adequate to disappointing depending on power level. Large homes may see a recharge interruption, especially when maximum suction is used.

Repeatedly getting trapped beneath one console caused visible scratches on the front. Homes with low, tight furniture may need a no-go zone to protect the finish.

The S2 handled tens of thousands of square feet and many hours of daily cleaning with little performance decline. It is well suited to frequent, demanding use.

The robot itself fits beneath much furniture, but the tall dock and occasional navigation trouble in tight nooks make it less ideal for compact homes. Small apartments may also find the system excessive.

The removable mop roller was judged easy to remove and reinstall.

Visible tank levels and app alerts make it easy to know when clean water is low or dirty water needs attention. This reduces interrupted cleaning sessions.

Weight was a drawback for the base station, which one review described as a bit heavy.

The powerful fan can blow light hair or fine debris away before pickup. This was most noticeable with loose cat hair during controlled hard-floor testing.

The multi-cyclone system is a standout innovation, separating debris before it reaches the filter. It preserves airflow and keeps suction close to day-one strength through extended use.

Dock drying noise was noticeable, especially when the roller rotated during drying.

Edge-following accuracy is inconsistent, with some runs leaving an obvious perimeter gap. More app control over wall distance and brush deployment would improve results.

The app’s service timers clearly show when filters, brushes and other consumables need attention. This is easier than tracking maintenance manually.

Mopping left hard floors visibly clean, glossy and pleasant underfoot. The finish was especially impressive on kitchens, hallways and other high-traffic hard surfaces.

Ownership costs can be high once replacement bags, filters, fragrance modules and heavier maintenance are considered. Budget-focused buyers may find simpler systems cheaper to run.

Cliff detection handled stair edges safely during testing. The robot navigated upper levels without attempting a dangerous drop.

Setup is consistently described as simple: assemble the ramp, fill the tanks, scan the app code and map the home. Most users can start cleaning within minutes.

Reliability is mixed: firmware support has been active, but early recall concerns and occasional app disconnects temper confidence. The short warranty also feels conservative for such an expensive machine.

Battery performance depends heavily on suction mode, and maximum power sharply reduces coverage. Recharge times around five hours are slow for a flagship robot.

The robot and dock feel solid, well assembled and appropriately premium. Long-term testers reported no meaningful loss of structural quality.

The dual side brushes and floating main brush were praised for working well together.

The S2 maintained strong suction and cleaning consistency through weeks or months of frequent use. Its durable feel and low performance decay inspire confidence for long-term ownership.

Frequent firmware updates improved the pre-release unit and addressed reported quirks. Ongoing software refinement appears to be a meaningful part of the product’s support.