The catch
eufy Omni S2
Even with the self-washing roller, it scored below the independent studio average on dried stains.
Side by side
eufy Omni S2 vs Omni C28: S2 has the edge on carpet protection in a mixed-floor home
Quick verdict
If obstacle sensing and carpet protection drive your decision, the S2 is the better fit for mixed floors. For hard floors, stains and pet hair at a lower tier, the C28 makes more sense.
Before you buy
Why, and what it costs you
The catch
eufy Omni C28
Independent testing put its obstacle avoidance in the middling range.
eufy Omni S2
- Why pick it
- You need small objects avoided day in, day out.
- Protecting your carpet comes first.
- The catch
- Even with the self-washing roller, it scored below the independent studio average on dried stains.
eufy Omni C28
- Why pick it
- Mopping hard floors counts for more.
- You deal with pet hair regularly.
- The catch
- Independent testing put its obstacle avoidance in the middling range.
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What this page compares
Two eufy roller-mop robots, set side by side on carpet care, obstacles, pet hair, dock hardware and price tier.
This one comes down to strongest fit and mop approach first, then to the limits of your own setup.
Day to day
How each one fits your routine
Before cleaning even enters the comparison, a low sofa can take C28 out
C28 has an approximately 4.4-inch body, about 112 millimeters high, so a genuinely 105-millimeter opening is closed to it. S2's support guidance also cautions against furniture below 100 millimeters, which leaves little margin near that boundary. When low-sofa access is essential, check the exact S2 body, the route width and the lowest crossbar before you pick it. C28 is still fine if the furniture is high enough or you clean that area separately.
Where this comes from
This example sets physical dimensions side by side and says nothing about navigation success. A nominal gap just above a body measurement can still fail, whether from an uneven floor, cables or a lower internal crossbar.
A dusty floor may need several dry passes before the first mop
Before the first mopping, C28 recommends two or three vacuum-only passes whenever built-up dust and hair could leave streaks. S2 likewise recommends vacuuming first. If you were counting on one roller pass on day one to clear a long-neglected layer, change that plan before picking either. Go with the system whose extra prep and later maintenance you will keep up, and do not treat a continuously washed roller as a reason to skip dry pickup.
Where this comes from
What this describes is a start-up workflow, and it is not a fresh cleaning-performance ranking. The extra vacuum passes come before wet cleaning, and they do not fix a set number of passes for every room.
Which one fits
Pick the situations that sound like you
I care about mopping as much as vacuuming
eufy Omni S2 lists “Self-washing roller” for mop approach, while eufy Omni C28 lists “HydroJet roller”. This changes how much cleaning, filling and emptying you handle yourself as an owner.
- eufy Omni S2
- Good
- eufy Omni C28
- Better fit
Toys and cables get left about
It relies on a sensor system designed to spot small obstacles.
- eufy Omni S2
- Better fit
- eufy Omni C28
- Depends
I need help dealing with sticky stains
A roller or high-pressure mop system goes after stuck-on marks.
- eufy Omni S2
- Depends
- eufy Omni C28
- Better fit
Hard floor covers most of my home
Mostly hard flooring is where its pickup and mopping system fit best.
- eufy Omni S2
- Good
- eufy Omni C28
- Better fit
My pets are shedders
Hair handling gets more attention in its brush and anti-tangle design.
- eufy Omni S2
- Good
- eufy Omni C28
- Better fit
Edges and corners are what bug me
The extending brush or mop is meant to get in nearer to the edges.
- eufy Omni S2
- Better fit
- eufy Omni C28
- Depends
Option A
eufy, T2081
Omni S2
This flagship's self-washing roller mop comes with strong tested results for carpet cleaning, tangle resistance and small-object avoidance.
- Best for
- You need small objects avoided day in, day out.
Facts we checked
- Strongest fit: Obstacles and carpet care
- Mop approach: Self-washing roller
- Buying case: Premium mixed-floor automation
- Furniture below 100 millimeters is excluded in S2 guidance.
Option B
eufy, T211A
Omni C28
This HydroJet roller-mop robot offers anti-tangle brushes, a five-in-one station and strong tested carpet pickup.
- Best for
- Mopping hard floors counts for more.
Facts we checked
- Strongest fit: Hard floors, stains and pet hair
- Mop approach: HydroJet roller
- Buying case: Broader value
- The body of the C28 is approximately 4.4-inch-high.
Spec by spec
Where they really differ
| Spec | eufy Omni S2 | eufy Omni C28 | In practice |
|---|---|---|---|
| Strongest fit | Obstacles and carpet care | Hard floors, stains and pet hair | |
| Mop approach | Self-washing roller | HydroJet roller | As an owner, how much cleaning, filling and emptying you do yourself depends on it. |
| Buying case | Premium mixed-floor automation | Broader value |
Trade-offs
What each pick costs you
With eufy Omni S2
- The 26.4-inch-tall station takes up space, and consumables specific to this model add ongoing cost.
With eufy Omni C28
- Its 4.4-inch body won't fit under some low furniture.
By the numbers
What the data shows
What we found across the robot vacuums we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| eufy Omni S2 |
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| eufy Omni C28 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
eufy Omni S2
You need small objects avoided day in, day out.
See price & reviews on Amazoneufy Omni C28
Mopping hard floors counts for more.
See price & reviews on AmazonEach link opens in a new tab.
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