Eufy Omni S2: Robovac with a roller mop exceeds clean (review) – CyberShack
Summary
The Eufy Omni S2 is a second-generation roller-mop robovac that builds significantly on the S1 Pro. Key hardware upgrades include 30,000 Pascals suction, an on-board cyclonic dustbin, HydroJet 2.0 roller-mop water delivery, a tangle-free DuoSpiral brush and improved AI with RGBD cameras and dToF LiDAR. The UniClean station washes and dries the roller mop, holds decent tank capacities and has a relatively small footprint.
Test panels found the S2 exceptional on hard floors (near-perfect first-pass mopping) and very strong with pet hair on carpets. Carpet performance is above average but occasionally needs an extra pass for static lint or very heavy shag. Overall the S2 is a near‑perfect Gen 5 device: fast mapping, superb obstacle and liquid detection, long run times and easy app-driven setup.
Key Points
- 30,000 Pascals suction and AeroTurbo 2.0 cyclone dustbin for consistent suction as the bin fills.
- HydroJet 2.0 30cm roller mop with continuous on-board cleaning and dual squeegees; UniClean station adds deep wash and hot-air drying.
- DuoSpiral rotary brush is tangle-resistant and improves carpet uptake; mop lifts 28mm for higher-pile areas.
- Advanced AI (LLM-trained) plus RGBD camera and 3D MatrixEye 2.0 offers excellent object and liquid recognition (40+ mess types) and safer obstacle avoidance.
- Fast mapping (~1 minute per 10m2), three-map support and simplified app UX because AI auto-decides many settings.
- Strong battery life (up to ~150 minutes), quick charge (~3 hours) and compact UniClean station with sensible tank sizes.
- Exceptional hard-floor mopping: ~97–98% first-pass; carpets perform well but sometimes need an extra pass on static-lint or very deep shag.
- Small design improvements that matter: dual extendable side whiskers, 15mm mop extension, fragrance dispenser and Matter support.
- RRP AU$2499; currently tested on pre-production firmware with retail availability expected October.
Content summary
The review covers specs, test methodology (four panellists plus reviewer), detailed results and component notes. Eufy has refined the roller-mop concept: ozonated/clean water is pumped through the roller and scraped into an onboard wastewater tank, avoiding the dirty-water drag problem of platten or rotating pads.
Performance highlights: near-perfect hard-floor cleaning, very good short-pile carpet and pet-hair pickup, solid medium-pile results and the ability to tackle challenging rugs though with occasional pauses under sustained max-boost duty. AI-driven navigation and object recognition make the S2 confident and efficient in whole-of-home unattended cleans. The UniClean station is compact yet comprehensive, handling auto-empty, mop deep-wash and drying cycles. Build quality is strong; the reviewer flags only the one-year warranty as conservative.
Context and relevance
Roller-mop systems are the dominant trend in premium robovacs for 2024–25; the Omni S2 shows how that tech is maturing. Compared with earlier roller-mop launches (S1 Pro, Omni E28 and competitors from Ecovacs), the S2 tightens hardware, AI and station integration to make unattended whole-home cleaning genuinely practical. If you follow smart-home cleaning tech, this model is a useful benchmark for Gen 5 devices and for what competitors will need to match.
Why should I read this?
Short and blunt: if you want a robovac that actually mops (not just drags dirty pads), handles pets, and mostly leaves you alone to get on with life, this review tells you why the S2 is worth considering. It’s packed with hands-on test results so you don’t have to wade through specs to see real-world wins and small caveats.
Author’s take (punchy)
Punchy: This is probably the best robovac of 2025 so far — exceptional mopping, smart AI and real-world usability. Read the details if you care about a proper clean and less fuss.