Eufy Omni S2 vs Narwal Flow
Researched by Riley Hart · prices checked Oct 31, 2026
As of Oct 31, 2026, the Eufy Omni S2 costs $1,600 and the Narwal Flow costs $1,500, so the Narwal Flow is $100 cheaper. The Eufy Omni S2 has a published review score and ranks #41 in our robot vacuums ranking; the Narwal Flow is not scored yet. Pick the Eufy Omni S2 for cluttered homes with carpet and pets. Pick the Narwal Flow for hard floor homes that mop often and have pets.
- Suction
- 30,000 Pa
- Navigation
- 3D ToF and camera
- Mopping
- Roller mop
- Runtime
- Up to 180 min
A good fit for busy homes with carpet, pets and clutter on the floor, since it was the only robot here to avoid all 24 obstacles in Vacuum Wars testing and it never tangled hair. Mopping is fine for daily grime but several reviewers found it weak on tough dried stains. Skip it if stain removal matters most or if you mind paying for Eufy's own detergent and fragrance refills.
Full Eufy Omni S2 review →- Suction
- 22,000 Pa
- Navigation
- dToF LiDAR inside
- Mopping
- FlowWash track mop
- Runtime
- Up to 190 min
One of the best mopping robots tested, with strong measured suction, zero hair tangles and a dock that washes and dries the track mop. Testers at TechRadar and Tom's Guide found the software and navigation quirky. Skip it if you want a simple app, and compare it against the Flow 2 since the Narwal store showed the Flow out of stock.
Full Narwal Flow review →Side by side
| Eufy Omni S2 | Narwal Flow | |
|---|---|---|
| Price | $1,600 | $1,500 |
| 3 year cost | $2,080 | $1,500 |
| Our score | 5.6/10 | Not scored yet |
| Rank in Floors | #41 | #83 |
| Status | on sale | on sale |
| Warranty | n/a | n/a |
| Suction | 30,000 Pa (brand claim), AeroTurbo 2.0 | 22,000 Pa (Narwal); Vacuum Wars measured 1.88 kPa against a 0.96 kPa average |
| Navigation | CleanMind AI with 3D MatrixEye 2.0 (ToF sensors plus camera), 3D mapping | dToF LiDAR inside the body (Narwal); TechRadar saw it push a chair, skip a room and report cleaning 0.0 square meters |
| Obstacle avoidance | Detects obstacles over 1 cm and 200+ object types (brand claim); Vacuum Wars scored a perfect 24 of 24 | Dual RGB cameras, AI chip and tri laser structured light, 200+ objects (Narwal); Vacuum Wars scored 18 of 24, and TechRadar saw it avoid a shoe, sock and USB cable |
| Mopping | Yes, HydroJet 2.0 self cleaning roller mop, 15 N pressure, extends to edges and lifts 28 mm on carpet | FlowWash track mop with warm water at 113F, 7 to 12 N pressure and 12 mm lift (Narwal); Vacuum Wars combined mopping score 268 against a 184 average |
| Self empty | Yes, auto empties into a 2.5 L bag rated for up to 68 days | Yes, 2.5 L dust bag rated for up to 120 days (Narwal US store) |
| Dock features | UniClean station washes the roller at 140°F, dries at 131°F, doses detergent, auto refill and drain options, plus a fragrance diffuser; 3 L clean and 2 L dirty tanks | Auto empty, mop washing at 113 to 176F, warm air drying, self cleaning; optional auto refill and drain version (Narwal US store); no auto detergent dispenser (TechRadar) |
| Runtime | Up to 180 min (TechRadar); Vacuum Wars estimated about 1,088 sq ft per charge | Up to 190 min (Narwal); Vacuum Wars estimated 2,068 sq ft per charge |
| Dustbin | Onboard bin size not published; dock bag 2.5 L | 2.5 L dock bag; Vacuum Wars describes a large robot bin with a removable section |
| Height | 3.4 in (85 mm) per TechRadar | 95 mm (3.7 in) per Narwal key features and Vacuum Wars; Narwal's spec table lists 107.7 mm |
| Pet hair | Vacuum Wars measured 88.5% flattened pet hair pickup and 0% hair wrap with DuoSpiral brushes | Vacuum Wars measured 89% flattened pet hair pickup and 0% tangles in its 7 inch hair test |
| App | Eufy app with Siri, Alexa, Google Home and Matter support | Narwal app with up to 4 saved maps, schedules and voice assistant; works with Siri, Alexa and Google Assistant (Narwal US store); TechRadar found it overwhelming with some mistranslations |
| Threshold | Up to 1.65 in double and 1.38 in single thresholds (brand claim); Vacuum Wars cleared 32 mm on 1 of 3 tries | 4 cm (1.57 in) (Narwal US store, TechRadar) |
| Noise | n/a | TechRadar measured 58 dB in quiet mode to 76 dB at top suction; Tom's Guide measured 49 to 74 dB depending on floor |
| Best for | cluttered homes with carpet and pets | hard floor homes that mop often and have pets |
| Skip if | you need strong stain removal | you want a simple, glitch free app |
Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.
What reviewers found
Eufy Omni S2
- Vacuum Wars (3.91/5): 87% carpet sand removal (S1 managed 61%), 88.5% flattened pet hair, 0% hair wrap and a perfect 24 of 24 obstacles; dried stain mopping and navigation speed were below average. Source
- TechRadar: Much better vacuuming than the Omni S1 with strong mopping and reliable navigation; about 55 dB in Quiet mode and 70 dB in Cyclone mode; one unit developed a connection fault and was replaced. Rated 5/5 design, 4.5/5 performance and 3.5/5 value, with no single overall score. Source
- Android Authority: Called it one of the best robot vacuums the reviewer has tested, with zero collisions and no hair tangles, but noticeably louder than other recent flagships. Source
Narwal Flow
- Vacuum Wars (3.58 Vacuum Wars stars): Measured 1.88 kPa suction, 83% sand removal, 89% flattened pet hair pickup and 0% hair tangle. Combined mopping score was 268 against a 184 average, obstacle avoidance 18 of 24 and estimated coverage 2,068 sq ft per charge. Source
- TechRadar: Called the cleaning superb, especially on carpet, and hot water mopping excellent. Noise was 58 dB in quiet mode and 76 dB at top suction. It pushed a chair, failed to enter a room and once reported 0.0 square meters cleaned. Subscores: Value 4/5, Design 4.5/5, Performance 3.5/5, App 3.5/5. Source
- Tom's Guide: Pickup was 83% overall on tile and 77% on carpet, with 70% to 75% hair pickup. Noise ranged from 49 to 74 dB depending on floor and power. Faults were a tricky app, random cleaning incidents and so so edge vacuuming. Source
Pros and cons
Eufy Omni S2
Pros
- Perfect 24 of 24 obstacle avoidance in Vacuum Wars testing
- Big carpet cleaning gain over the Omni S1
- No hair wrap in testing
- Self cleaning roller mop and drying dock
- Published replacement interval makes running costs predictable
Cons
- Expensive at $1,599.99 list
- Weak on dried stains compared with the S1
- Louder than rival flagships per Android Authority
- Detergent and fragrance refills are proprietary
- Slower navigation and lower coverage per charge
Narwal Flow
Pros
- Excellent mopping, 268 combined score at Vacuum Wars
- No hair tangles in Vacuum Wars test
- Strong measured suction
- Long runtime, about 2,068 sq ft per charge
- Climbs 4 cm thresholds
Cons
- Navigation bugs reported by TechRadar and Tom's Guide
- Complex app with mistranslations
- No auto detergent dispenser
- High price
- Out of stock at Narwal US store on 2026-10-30
Questions buyers ask
Which is better, the Eufy Omni S2 or the Narwal Flow?
The Eufy Omni S2 has a published review score and ranks #41 in our robot vacuums ranking; the Narwal Flow is not scored yet. Pick the Eufy Omni S2 for cluttered homes with carpet and pets. Pick the Narwal Flow for hard floor homes that mop often and have pets.
Which is cheaper?
The Narwal Flow at $1,500, versus $1,600 for the Eufy Omni S2, checked Oct 31, 2026. Over 3 years with running costs: $2,080 vs $1,500.
What is the difference between the Omni S2 and the Flow?
Suction: 30,000 Pa (brand claim), AeroTurbo 2.0 on the Omni S2, 22,000 Pa (Narwal); Vacuum Wars measured 1.88 kPa against a 0.96 kPa average on the Flow. Navigation: CleanMind AI with 3D MatrixEye 2.0 (ToF sensors plus camera), 3D mapping on the Omni S2, dToF LiDAR inside the body (Narwal); TechRadar saw it push a chair, skip a room and… on the Flow. Obstacle avoidance: Detects obstacles over 1 cm and 200+ object types (brand claim); Vacuum Wars scored a… on the Omni S2, Dual RGB cameras, AI chip and tri laser structured light, 200+ objects (Narwal); Vacuum… on the Flow.
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