Eufy Omni S2
pros and cons
- Very efficient mop roller that cleans your floors with fresh water.
- Its vacuum performance is outstanding against pet hair.
- New fragrance diffuser helps mitigate odors.
- Cleans with electrolyzed water.
- The water needs emptying and refilling more often than most hands-free combination models.
- Dock design is rather tall.
- Battery life is on the mid-to-low end at 150 minutes.
jul / 2026
on Google.
The Eufy Omni S2
Not to get gross, but robot and upright vacuums can get quite smelly in a house with dogs. No matter how often you clean them, it’s like the smell lingers in their inner components and comes out when the vacuum runs or empties itself automatically at the dock. Which can be disgusting — like bad vacuum breath.
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Eufy built a five-layer filtration system within the robot to prevent this, culminating in the fragrance diffuser. The robot vacuum sucks up dust, hair, debris, dander, and other allergens, which all land in the dustbin. The air flows through five layers of filtration as it exits the vacuum and passes through the diffuser, expelling fresh-smelling, clean air that spreads throughout your house as the robot moves.
Navigation ability
Navigation is pretty good, especially for a model that doesn’t have a spinning LIDAR component protruding from the top. The robot learns its way around the house and cleans more efficiently as it does. While the first two or three cleaning sessions might incur some bumps against furniture or the wall, the robot learns its surroundings with experience.
Ultimately, it’s smart enough to map accurately. You won’t find it spinning around, trying to find its place in your home. And it makes real-time decisions to quickly adjust its navigation, like avoiding narrow furniture legs.
Eufy is the mopping GOAT
The water tanks are probably one of the first drawbacks I noticed with the Eufy Omni S2. I have to empty the dirty water tank and refill the clean water tank about once every two or three cleanings, which is a lot more often than I have to do it with other self-washing robots.
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However, you have to consider that this mop is very effective: it spins six times per second inside the robot, continuously spraying clean water and scrubbing as it rolls over your floor. As a result, I’m okay with refilling it more often.
Battery performance
The S2’s battery lasts around 150 minutes, which is in the mid- to low-end among comparable robot vacuums. However, this is significant if you’re cleaning a large area, like an entire single-story home, in which case it may stop about three-quarters of the way and return to charge.
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Your mileage will vary, depending on which functionality is running and what settings the robot uses. My robot can vacuum my entire 900-square-foot first floor. It only requires going back to charge if I set the suction power to the max level while mopping, and it’s typically only when it has about 10 or 15 minutes left.
ZDNET’s buying advice
The Eufy Omni S2, but it’s a robot vacuum and mop you can rely on for years to come. And one that I, as a reviewer of robot vacuums, am not planning on getting rid of anytime soon.
The Eufy Omni S2 wins the ZDNET Editors’ Choice award for being an exceptional robot vacuum and mop in both our controlled experiments and home tests. Eufy perfected its design with the Omni S2, correcting the previous model’s shortcomings and making this one of the best robot vacuum and mop combinations on the market.
Source : ZDNet