I reviewed the Yeedi M14 Plus Robot Vacuum & Mop at the end of May and thought it was excellent. My main issue with it was that Yeedi don’t launch these advanced models in the UK.

They have now launched the S16 Plus, and Yeedi claims this is the most advanced and powerful flagship robot vacuum to date.

From the press release, Yeedi states:

Its standout feature, BLAST (Boosted Large-Airflow Suction Technology), employs larger fan blades, an ultra-wide air inlet, and a streamlined aerodynamic duct to generate stronger, more stable airflow per rotation. Each fan blade is angled at 45° for optimal performance, guiding air through an Archimedean spiral to maximise suction power—the same advanced airflow technology used in the flagship ECOVACS X9 PRO OMNI.

Paired with a 100W high-torque motor, the S16 PLUS delivers 30% more torque and 50% higher discharge current than standard models, making it exceptionally effective at removing embedded dust, pet hair, and debris across all surfaces.

My review of the Yeedi S16 Plus will be live in the next few days. However, in the meantime, how much does it differ from the recently launched M14 Plus?

Yeedi S16 Plus vs M14 Plus Robot Vacuum & Mop Specification Comparison

Design Philosophy and Aesthetic Approach

The Yeedi M14 Plus embraces what the company calls a “Gravity Field” design concept, drawing inspiration from cosmic gravitational curves and the natural flow of space. This translates into a multidimensional curved design that aims to create visual harmony within home environments. The unit features a matte white shell with rose gold accents, designed to minimise visual clutter whilst maintaining a premium appearance. The accompanying OMNI station follows this design language with naturally recessed surfaces and rounded edges that echo the gravitational curve concept.

In contrast, the S16 Plus adopts a more conventional approach to robot vacuum design, focusing on functionality over aesthetic statement. The unit maintains a clean, professional appearance that blends seamlessly into most home environments without drawing particular attention to itself. This design philosophy reflects the S16 Plus’s positioning as a performance-focused device where engineering takes precedence over visual impact.

The difference in design approach extends beyond mere aesthetics. The M14 Plus’s curved surfaces and rounded edges are intended to feel safer to touch and more approachable, whilst the S16 Plus’s straightforward design suggests a tool built primarily for efficiency and effectiveness.

Core Cleaning Technologies

Both models share Yeedi’s OZMO ROLLER Instant Self-Washing Mopping System, which represents a departure from traditional dual-pad mopping approaches. This system employs a roller-type mop that rotates at 200 RPM, applying significant pressure to floor surfaces whilst simultaneously washing itself during operation. The system uses 16 nozzles to continuously spray clean water onto the roller, whilst a high-pressure air pump recovers dirty water in real-time.

The OZMO ROLLER system addresses several common issues with robot mop systems. Traditional dual-pad systems often drag dirty water across floors, creating streaks and potentially spreading contaminants. The self-washing roller maintains consistent cleaning performance throughout the entire cleaning cycle, theoretically eliminating the cross-contamination that occurs when dirty mop pads continue cleaning without refreshing.

However, the roller system does present some limitations. The single roller design means the cleaning path is narrower than some dual-pad systems, potentially requiring more passes to cover the same area. Additionally, the complexity of the self-washing mechanism introduces more potential failure points compared to simpler mop pad systems.

Suction Performance and Debris Handling

The most significant performance difference between these models lies in their suction capabilities. The M14 Plus delivers 18,000 Pa of suction power, whilst the S16 Plus provides 16,600 Pa. This 1,400 Pa difference represents approximately 8% more suction power for the M14 Plus, which could translate to better performance on carpets and with embedded debris.

The S16 Plus compensates for its lower raw suction power with BLAST (Boosted Large-Airflow Suction Technology), which employs larger fan blades, an ultra-wide air inlet, and a streamlined aerodynamic duct to generate more stable airflow per rotation. Each fan blade is angled at 45 degrees for optimal performance, guiding air through an Archimedean spiral to maximise suction efficiency. This technology, shared with higher-end ECOVACS models, aims to deliver more effective cleaning despite the lower Pa rating.

The practical implications of this difference depend largely on the user’s specific cleaning needs. Homes with thick carpets or heavy pet hair may benefit from the M14 Plus’s higher raw suction power, whilst the S16 Plus’s more efficient airflow design may prove equally effective for most hard floor and low-pile carpet applications.

Anti-Tangle Technology and Maintenance

Both models feature ZeroTangle 3.0 technology, but with different implementations that reflect their respective design philosophies. The system incorporates several components designed to prevent hair entanglement, a common issue that can significantly impact cleaning performance and require frequent manual intervention.

The main brush design uses a 45-degree angled bristle configuration that works with a V-shaped rubber strip to create a cyclone effect, directing hair towards the centre where suction is strongest. V-shaped comb teeth inside the roller brush help prevent hair accumulation by constantly moving collected hair back and forth as the brush rotates.

The side brush has been redesigned from a traditional three-prong configuration to a single-prong dual-cluster design with inward-curved bristles. This change addresses the intersection issues that occur when hair gets caught between multiple prongs spinning in different directions.

Whilst ZeroTangle 3.0 represents a clear improvement over previous systems, it’s worth noting that no anti-tangle system is completely foolproof. Very long hair, threads, or certain types of debris may still occasionally cause issues, particularly around the edges where the side brush operates. Regular maintenance, whilst reduced, remains necessary for optimal performance.

Navigation and Obstacle Management

Both models employ AIVI 3D 3.0 Omni-Approach Technology, which combines LiDAR with dual structured light and vision systems for comprehensive environmental mapping. The system can detect objects at distances ranging from 7cm to 12 metres, with Yeedi claiming a 100% detection rate based on extensive training data.

The approach differs from traditional obstacle avoidance systems by attempting to clean along object edges rather than simply avoiding them. The system extracts object contours and follows boundaries to maximise cleaning coverage whilst maintaining safe distances from furniture and household items.

The TruEdge 2.0 system incorporates a 3D Edge Sensor that constructs three-dimensional maps of edge objects during cleaning operations. This enables the robot to identify protruding elements such as varying skirting boards, suspended furniture, and door thresholds, adjusting the roller mop position to maintain close contact with edges without causing collisions.

Whilst this technology represents a significant advancement over basic bump-and-turn navigation, it’s not without limitations. Complex environments with multiple obstacles, varying floor levels, or unusual furniture configurations may still present challenges. The system’s effectiveness also depends on adequate lighting conditions and clean sensors.

Battery Performance and Coverage

The S16 Plus features a 6,400 mAh battery compared to the M14 Plus’s 5,200 mAh capacity, representing a 23% increase in battery capacity. This translates to potentially longer cleaning sessions and better coverage for larger homes. The S16 Plus can operate for up to 252 minutes on a single charge, whilst the M14 Plus provides up to 241 minutes of runtime.

The practical impact of this difference depends on home size and cleaning requirements. For most average-sized homes, both models provide sufficient runtime to complete a full cleaning cycle. However, larger properties or homes requiring multiple cleaning passes may benefit from the S16 Plus’s extended battery life.

Both models support recharge-and-resume functionality, allowing them to return to the base station for charging and continue cleaning where they left off. This feature mitigates the impact of battery limitations for larger cleaning tasks.

Station Capabilities and Maintenance

Both models include comprehensive OMNI stations that handle multiple maintenance tasks automatically. The stations perform dust emptying into 3-litre capacity bags, hot water mop washing at 75°C, and hot air drying at 63°C. The systems can operate for up to 150 days without manual intervention, according to Yeedi’s specifications.

A notable difference lies in the dirty water tank capacity. The M14 Plus features a 4-litre dirty water tank, whilst the S16 Plus includes a 2.2-litre capacity. This difference could impact maintenance frequency for homes with larger floor areas or more frequent mopping requirements.

The stations’ compact design allows installation in confined spaces, addressing common placement constraints in smaller homes. However, the complexity of these all-in-one systems introduces potential reliability concerns. Multiple integrated functions mean more components that could require service or replacement over time.

Carpet Handling and Multi-Surface Performance

Both models offer sophisticated carpet detection and handling capabilities. The systems can identify carpet areas and adjust cleaning strategies accordingly, including automatic mop lifting to prevent carpet wetting and increased suction power for deeper cleaning.

The “Carpets First” function enables the robot to vacuum all carpets before beginning mopping operations, keeping the mop dry during carpet cleaning. After completing carpet areas, the robot returns to the station to empty the dustbin and wash the mop before continuing with hard floor cleaning.

“Carpet Deep Cleaning” mode provides enhanced cleaning for carpet areas, with the robot making multiple passes in complementary patterns to improve debris removal. Users can set individual cleaning strategies for different carpet areas, allowing customisation based on carpet type and soiling levels.

Whilst these features represent significant improvements over basic carpet detection systems, performance on high-pile carpets or heavily soiled areas may still require traditional vacuum cleaning for optimal results.

App Integration and Smart Features

Both models support comprehensive app control through the Yeedi mobile application, providing access to scheduling, mapping, and customisation features. Users can create no-go zones, set room-specific cleaning schedules, and adjust suction and water flow levels for different areas.

The mapping system allows multi-level floor plan storage, useful for homes with multiple floors. Room identification and labelling enable targeted cleaning of specific areas without requiring a full home cleaning cycle.

Voice control integration supports Amazon Alexa, Google Assistant, and Siri shortcuts, allowing hands-free operation and integration with broader smart home ecosystems. However, the effectiveness of voice control depends on network connectivity and the reliability of the chosen voice assistant platform.

Performance Limitations and Considerations

Despite their advanced features, both models have limitations that potential buyers should consider. The roller mop system, whilst effective at self-cleaning, may struggle with certain types of debris or heavily soiled areas that would benefit from the scrubbing action of traditional mopping.

The complex sensor arrays and navigation systems require regular cleaning to maintain optimal performance. Dust or debris on sensors can impact navigation accuracy and obstacle detection capabilities.

Battery degradation over time will eventually impact runtime and cleaning coverage, requiring battery replacement or reduced cleaning area expectations. The integrated battery design may make replacement more complex than models with easily removable batteries.

Strengths and Weaknesses

Yeedi S16 Plus Strengths:

• BLAST airflow technology provides efficient suction despite lower Pa rating
• Larger battery capacity enables longer cleaning sessions
• Advanced airflow design reduces noise levels
• Streamlined design fits well in most home environments

Yeedi S16 Plus Weaknesses:

• Lower raw suction power compared to M14 Plus
• Smaller dirty water tank requires more frequent emptying
• Less distinctive design may lack visual appeal for some users

Yeedi M14 Plus Strengths:

• Higher suction power for challenging cleaning tasks
• Larger dirty water tank capacity reduces maintenance frequency
• Distinctive design with premium aesthetic appeal
• Gravity Field design concept creates unique visual identity

Yeedi M14 Plus Weaknesses:

• Smaller battery capacity may limit coverage for larger homes
• Higher suction power may increase noise levels
• Design complexity could impact long-term reliability

Conclusion

The choice between the Yeedi S16 Plus and M14 Plus ultimately depends on individual priorities and home requirements. The S16 Plus offers superior battery life and efficient cleaning through its BLAST airflow technology, making it suitable for larger homes or users who prioritise extended runtime. The M14 Plus provides higher raw suction power and a more distinctive design, appealing to users who need maximum cleaning performance or prefer a more visually striking appliance.

Both models share core technologies that address common robot vacuum limitations, including effective anti-tangle systems, comprehensive navigation, and advanced mopping capabilities. The OZMO ROLLER system represents a genuine advancement in robot mopping technology, though it adds complexity that may impact long-term reliability.

For most users, the performance differences between these models will be marginal in daily use. The decision may come down to specific requirements such as home size, carpet types, aesthetic preferences, and tolerance for maintenance tasks. Both models offer significant improvements over basic robot vacuums and represent solid choices in the premium robot vacuum market.

I am James, a UK-based tech enthusiast and the Editor and Owner of Mighty Gadget, which I’ve proudly run since 2007. Passionate about all things technology, my expertise spans from computers and networking to mobile, wearables, and smart home devices.

As a fitness fanatic who loves running and cycling, I also have a keen interest in fitness-related technology, and I take every opportunity to cover this niche on my blog. My diverse interests allow me to bring a unique perspective to tech blogging, merging lifestyle, fitness, and the latest tech trends.

In my academic pursuits, I earned a BSc in Information Systems Design from UCLAN, before advancing my learning with a Master’s Degree in Computing. This advanced study also included Cisco CCNA accreditation, further demonstrating my commitment to understanding and staying ahead of the technology curve.

I’m proud to share that Vuelio has consistently ranked Mighty Gadget as one of the top technology blogs in the UK. With my dedication to technology and drive to share my insights, I aim to continue providing my readers with engaging and informative content.