Eufy Omni S1 Pro vs Eufy Omni E28
Quick take: The Eufy Omni E28 costs $285 less; the Eufy Omni E28 has stronger suction (20,000 vs 8,000 Pa); the Eufy Omni S1 Pro runs longer per charge (220 vs 216 min).
Which one to buy
Out of production and listed at $945, the Omni S1 Pro is discontinued, with the Omni S2 as Eufy's successor, while the Omni E28 is still sold. That alone points to the E28 for most buyers, and the cleaning record backs it up.
Both use self-rinsing roller mops rather than spinning pads. The S1 Pro's is its whole identity: a roller under about 1kg of pressure, rinsed continuously, with an ozone cycle in the dock that owners say keeps the station from going sour. Hard-floor owners love it. Carpet is where it falls apart. Owners cite some of the lowest embedded-debris scores in one large test group, and it gets stuck on longer-pile rugs. It's rated at 8,000 Pa against the E28's 20,000 Pa, it locks you into Eufy's own detergent, and owners report skipped schedules and random errors.
The E28 is the better all-rounder. Owners cite an 85% embedded-dirt score, obstacle avoidance of 23 out of 24, a roller mop that scrubs stains well above average, and any cleaning solution you like. It adds a detachable spot cleaner in the dock for couches and car seats. Its downsides are noise, especially the self-empty cycle, long hair wrapping around the brush, a dirty-water tank that can pop loose, and a leak-prone spot-cleaner module.
The S1 Pro keeps two advantages: a 2-year warranty against the E28's 1 year, and a 3.8-inch height against 4.4 inches. Neither is worth paying $945 for on a discontinued model.
Eufy Omni S1 Pro
Buy the Omni S1 Pro only for an all-hard-floor home, at a clear discount, with the 2-year warranty honored, since it's discontinued and weak on carpet.
Eufy Omni E28
Best if you have any carpet, want a built-in spot cleaner, or simply want the current model.
| Spec | Eufy Omni S1 Pro | Eufy Omni E28 |
|---|---|---|
| Price | ~$945 | ~$660 |
| Type | Robot Vacuum & Mop | Robot Vacuum & Mop |
| Suction | 8000 Pa | 20000 Pa |
| Battery | 220 min | 216 min |
| Navigation | LiDAR + Camera | LiDAR + Camera |
| Filtration | — | — |
| Cordless | Yes | Yes |
| Bagged | — | — |
| Noise | 65 dB | 62 dB |
| Dustbin | 250 ml | 300 ml |
| Water tank | 300 ml | 300 ml |
| Self-empty dock | Yes | Yes |
| Auto mop washing | Yes | Yes |
| Hot water washing | No | No |
| Obstacle avoidance | Yes | Yes |
| Carpet detection | Yes | Yes |
| Auto mop lifting | Yes | Yes |
| Multi-floor mapping | Yes | Yes |
| App control | Yes | Yes |
| Dimensions | 13.7 x 12.8 x 3.8 in | 12.8 x 13.7 x 4.4 in |
| Weight | 10.5 lbs | 10.4 lbs |
| Warranty | 2 years | 1 year |
Pros & cons
Eufy Omni S1 Pro
- ✓Roller mop is washed and squeegeed in real time — it never drags dirty water across the floor
- ✓owners call the mopping the best in class: lifts 48-hour dried stains without streaks
- ✓Sleek 3.78-inch body slides under furniture that blocks turret robots
- ✓Ozone-treated water sanitizes without detergent smells
- ✓2-year Anker warranty with responsive US support
- ✗8000Pa suction and 250ml bin make it a mopping-first machine — carpet homes should look elsewhere
- ✗Dirty water tank is built into the dock and awkward to carry to a sink
- ✗No Matter or advanced smart home integration yet
- ✗Launch price was $1499 and it still sells above most spinning-pad rivals
Eufy Omni E28
- ✓Detachable FlexiOne spot cleaner out-suctioned a Bissell Little Green in independent testing
- ✓85% embedded-dirt removal is a top-eight score out of 150+ robots tested by Vacuum Wars
- ✓Excellent AI obstacle avoidance dodged 23 of 24 test objects including cables and pet waste stand-ins
- ✓Stain removal score of 127 crushes the 93 category average thanks to the pressurized roller mop
- ✓CornerRover extending side brush and 21mm threshold crossing handle edges and door strips well
- ✗Long hair (7in+) wraps into dense tangles around the brush roll
- ✗Airflow and suction at the cleaning head measure below average for its price tier
- ✗Small 300ml dustbin forces frequent trips back to the dock
- ✗Dock cycles are loud - 75-80dB when emptying, washing the roller, or running the spot cleaner
- ✗Mop roller is washed with cold water only, unlike hot-wash rivals
Eufy Omni S1 Pro vs Eufy Omni E28: common questions
Is the discontinued Omni S1 Pro still worth buying over the Omni E28?▾
Rarely. It is listed at $945, cleans carpet poorly by its owners' accounts, and is out of production. Its mopping is excellent on hard floors, so it only makes sense at a deep discount in a home with no carpet.
Which has the better mop?▾
Both use self-rinsing roller mops that owners rate above spinning pads. S1 Pro owners say its pressure lifts dried spills and its ozone cycle keeps the dock fresh. E28 owners report strong stain scores but slightly more water left behind and some streaks on dark floors.
Which costs more to run?▾
The S1 Pro. Owners say it needs Eufy's proprietary detergent on top of dust bags. The E28 accepts any cleaning solution, so its ongoing cost is mainly bags.