Eufy Omni S2 vs Narwal Flow 2
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 2 costs $1,300, so the Narwal Flow 2 is $300 cheaper. The Narwal Flow 2 scores higher in our ranking (6.3 vs 5.6 out of 10). Pick the Eufy Omni S2 for cluttered homes with carpet and pets. Pick the Narwal Flow 2 for pet homes with mostly hard floors.
- 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
- 31,000 Pa
- Navigation
- Laser based 3D mapping
- Mopping
- Yes
- Runtime
- 7,000 mAh battery
A well rounded flagship for homes with pets and mostly hard floors. Vacuum Wars measured strong suction, no hair wrap and good obstacle avoidance, and its retest after a firmware update rated the mopping well above average. Tom's Guide was less impressed with edges and corners, and the 3.74 in body will not fit under the lowest furniture.
Full Narwal Flow 2 review →Side by side
| Eufy Omni S2 | Narwal Flow 2 | |
|---|---|---|
| Price | $1,600 | $1,300 |
| 3 year cost | $2,080 | $1,300 |
| Our score | 5.6/10 | 6.3/10 |
| Rank in Floors | #41 | #31 |
| Status | on sale | on sale |
| Warranty | n/a | 1 year limited (Narwal warranty policy for purchases outside the EU and Switzerland) |
| Suction | 30,000 Pa (brand claim), AeroTurbo 2.0 | 31,000 Pa (brand claim); Vacuum Wars measured 1.92 kPa and 18 CFM, above average |
| Navigation | CleanMind AI with 3D MatrixEye 2.0 (ToF sensors plus camera), 3D mapping | Laser based 3D mapping with dual 1080p RGB cameras and a 10 TOPS AI chip |
| Obstacle avoidance | Detects obstacles over 1 cm and 200+ object types (brand claim); Vacuum Wars scored a perfect 24 of 24 | TwinAI Dodge with dual cameras; Vacuum Wars scored 20 of 24 objects avoided |
| Mopping | Yes, HydroJet 2.0 self cleaning roller mop, 15 N pressure, extends to edges and lifts 28 mm on carpet | Yes, self refreshing track roller mop with 12 N pressure and 140°F water, lifts 10 mm on carpet |
| Self empty | Yes, auto empties into a 2.5 L bag rated for up to 68 days | Yes, into a 2.5 L disposable bag; Narwal says a bag lasts up to 120 days without pets or 90 days with pets |
| 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 | Washes the mop at 212°F, dries it at 104°F, doses detergent; Narwal also sells a version with auto refill and drainage |
| Runtime | Up to 180 min (TechRadar); Vacuum Wars estimated about 1,088 sq ft per charge | 7,000 mAh battery; Vacuum Wars measured 38 min in a studio vacuum and mop run, while 9to5Google cleaned about 1,300 sq ft without a recharge |
| Dustbin | Onboard bin size not published; dock bag 2.5 L | 300 mL onboard bin (Vacuum Wars) |
| Height | 3.4 in (85 mm) per TechRadar | 3.74 in (95 mm) per Narwal |
| Pet hair | Vacuum Wars measured 88.5% flattened pet hair pickup and 0% hair wrap with DuoSpiral brushes | Vacuum Wars measured 88% flattened pet hair pickup and 0% hair wrap |
| App | Eufy app with Siri, Alexa, Google Home and Matter support | Narwal app with Siri, Alexa and Google Assistant; Vacuum Wars lists Matter support, but Narwal's product page does not |
| 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 | Up to 1.57 in (40 mm) per Narwal; Vacuum Wars cleared 32 mm easily and 38 mm on a second try |
| Best for | cluttered homes with carpet and pets | pet homes with mostly hard floors |
| Skip if | you need strong stain removal | you need a robot under 3.5 in tall |
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 2
- Vacuum Wars (3.88/5): Lab tests found 84% sand removal from carpet, 88% flattened pet hair pickup, 0% hair wrap and 20 of 24 obstacles avoided; a retest after a firmware update put mopping well above average, but the studio vacuum and mop run lasted only 38 minutes. Source
- Tom's Guide: Picked up 100% of kitty litter on both floors, 100% of pet hair on hardwood and 80% on carpet, but only 30% and 20% of cereal; reviewer said edges and corners need manual cleaning and it does not live up to its price. Source
- 9to5Google: Cleaned about 1,300 sq ft with back to back vacuum and mop passes without stopping to recharge; reviewer rated it roughly equal to the Roborock Saros 20 but noted the taller body. 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 2
Pros
- Hot water track mop cleans sticky spills well
- No hair wrap in Vacuum Wars testing
- Above average obstacle avoidance and navigation
- Dust bag lasts up to 120 days
- Quiet robot and dock per several reviewers
Cons
- Expensive at $1,299.99
- 3.74 in tall, taller than Roborock's slim models
- Small 300 mL onboard bin
- Weak edge and corner cleaning in Tom's Guide testing
- False leak warnings from the dock in CGMagazine testing
Questions buyers ask
Which is better, the Eufy Omni S2 or the Narwal Flow 2?
The Narwal Flow 2 scores higher in our ranking (6.3 vs 5.6 out of 10). Pick the Eufy Omni S2 for cluttered homes with carpet and pets. Pick the Narwal Flow 2 for pet homes with mostly hard floors.
Which is cheaper?
The Narwal Flow 2 at $1,300, versus $1,600 for the Eufy Omni S2, checked Oct 31, 2026. Over 3 years with running costs: $2,080 vs $1,300.
What is the difference between the Omni S2 and the Flow 2?
Suction: 30,000 Pa (brand claim), AeroTurbo 2.0 on the Omni S2, 31,000 Pa (brand claim); Vacuum Wars measured 1.92 kPa and 18 CFM, above average on the Flow 2. Navigation: CleanMind AI with 3D MatrixEye 2.0 (ToF sensors plus camera), 3D mapping on the Omni S2, Laser based 3D mapping with dual 1080p RGB cameras and a 10 TOPS AI chip on the Flow 2. Obstacle avoidance: Detects obstacles over 1 cm and 200+ object types (brand claim); Vacuum Wars scored a… on the Omni S2, TwinAI Dodge with dual cameras; Vacuum Wars scored 20 of 24 objects avoided on the Flow 2.
Also consider
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