Yeedi S16 Plus Robot Vacuum Review vs M14 Plus

I recently reviewed the Yeedi M14 Plus Robot Vacuum & Mop. I was great, but as always, disappointing that Yeedi have not launched it 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. However, it is strikingly similar in specification to the M14 Plus, and the suction power is lower.

The main benefit of this model appears to be the new Boosted Large-Airflow Suction Technology (BLAST).

From the press release, Yeedi states:

Its standout feature, BLAST, 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.

However, how much does it differ from the recently launched M14 Plus?

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Specification

Summary of Key Differences

• Suction Power: M14 Plus is stronger (18,000 Pa vs 16,600 Pa).
• Battery Capacity: S15 Plus lasts longer (6400 mAh vs 5200 mAh).
• Dirty Water Tank: M14 Plus holds more (4 L vs 2.2 L).
• Obstacle Avoidance: M14 uses AIVI 3D 3.0; S15 uses RGBD + camera light.
• Features: S16 Plus has BLAST (Boosted Large-Airflow Suction Technology) which uses larger fan blades and an ultra-wide inlet for improved performance.

Features

Core Cleaning Technologies

BLAST Suction Technology

The S16 PLUS features BLAST (Boosted Large-Airflow Suction Technology), which delivers 16,600Pa of suction power. This system employs larger fan blades, an ultra-wide air inlet, and a streamlined aerodynamic duct to generate stronger airflow per rotation. The 47° optimised blade angle and Archimedean spiral air duct ensure powerful yet stable suction across all surfaces.

The system is powered by a 100W high-torque motor that provides 30% more torque and 50% higher discharge current compared to standard models, whilst maintaining quieter operation and longer motor life.

OZMO ROLLER Instant Self-Washing Mopping

The mopping system features ultra-high pressure and speed capabilities, ensuring the mop remains clean throughout the cleaning process. The instant self-washing function removes dirt and prevents streaks, leaving minimal water residue for faster drying. The system can tackle tough stains with high-pressure intensity.

Anti-Tangle and Lifting Systems

ZeroTangle 3.0

The upgraded anti-tangle system features a Cyclone-directed Main Brush and ARClean Side Brush, designed to prevent hair entanglement for hands-free maintenance. The system efficiently collects even long hair without requiring cutting.

Triple-Lift Mechanism

The robot includes a smart system that automatically raises the roller mop, side brush, and main brush when needed. This prevents smearing on hard floors and keeps carpets dry, ensuring optimal performance across different surfaces with a 10mm automatic mop lifting capability.

Edge and Navigation Technologies

TruEdge 2.0 Adaptive Edge Cleaning

This system ensures comprehensive cleaning along edges and corners. The roller mop extends continuously for maximum coverage, whilst the TruEdge 3D Edge Sensor and smart algorithms guide the robot to navigate irregular edges without collisions. The side brush reaches internal corners for complete coverage.

AIVI 3D 3.0 Technology

The robot directly identifies obstacles from environmental images, follows their contours precisely, and cleans along them closely. This eliminates the need for obstacle avoidance, ensuring maximum cleaning coverage. The system includes professional carpet care solutions with “Carpets First” and “Carpet Deep Cleaning” strategies.

OMNI Station Features

The all-in-one docking station integrates multiple functions:

• Auto-Empty dust collection with 3L dust bag capacity
• Hot-water mop washing at 75°C
• Auto small-tank refill
• Hot-air drying at 63°C
• 4L clean water tank capacity
• 2.2L dirty water tank capacity

Unboxing / Design

The Yeedi S16 Plus I was sent came in black, while the M14 Plus was white. I prefer the white as it seems a bit more subtle, but it isn’t something I’d factor into my buying decision.

Beyond that, there is not a great deal of visual difference between the two models. As far as design goes, I am largely indifferent towards robot vacuums.

For me, the one notable part of the design on both the S16 and M14 is the Ozmo roller, which then extends out for edge cleaning (TruEdge 2.0). The roller design offers superior mopping performance to pads, but the one downside is that premium robot vacuums with mopping pads, such as the Dreame L40 Ultra, can extend the mopping pad outwards, which is slim enough to fit under some crevices.

On the other hand, the one significant downside is the smaller dirty water tank, which will need to be emptied more frequently.

Set Up / Yeedi App

The initial setup process follows the standard procedure for robot vacuums. I started by placing it in the charging station to make sure it had power, switching the power on underneath the lid, using the Yeedi app to connect and following the steps, which include passing the WiFi details over via Bluetooth.

The app interface presents a clean, functional design that provides access to all major features without overwhelming complexity. Multi-level mapping support, virtual barriers, and advanced room-by-room scheduling are all present, meeting expectations for a device in this price category.

The app provides access to all the functions you expect from a premium robot vacuum. Multi-level mapping support allows management of different floors, whilst virtual barriers and no-go zones provide precise control over cleaning areas.

Voice control integration with Alexa, Google Assistant, and Siri provides convenient hands-free operation, though the implementation feels standard rather than exceptional. Personally, I don’t find much use in voice control for devices like this. I prefer to rely on schedules.  

Matter Connectivity – Connecting the Yeedi to Home Assistant

One interesting feature of this is the ability to pair it up with a Matter controller. I use Home Assistant, but there is also Google Home, Alexa, Homey and others.

One interesting thing when you add the Yeedi to Home Assistant is that it gets identified as an Ecovacs Deebot. This isn’t entirely unexpected, as it is well known that Yeedi is a sub-brand of Ecovacs.

Within Home Assistant, you have controls for the clean mode, but no other direct controls. Then, sensors for the current phase and operational state. Plus, the usual identifying feature, and you can also monitor the battery life.

Under automations, the only trigger/action is the clean mode, so you can’t really create much of an automation.

Mapping Performance

The S16 Plus combines dToF LiDAR with vision-based navigation, a configuration that should theoretically provide excellent mapping accuracy. I have found the mapping performance meets expectations and the performance is subjectively better than solutions that only use LiDAR or VSLAM.

The robot successfully creates detailed floor plans and intelligently divides spaces into logical room segments.

The robot has excellent navigation performance around furniture and obstacles using what Yeedi calls AIVI 3D 3.0. If you have a particularly cluttered home (like mine) then you can increase the sensitivity for obstacle avoidance to high.

I think the only time it has had issues is when it rolled over a USB cable, which then got wrapped up in the roller. Not an uncommon problem for me due to all the devices I use.

Edge detection and boundary recognition work reliably, with the robot successfully identifying different floor types and automatically adjusting behaviour accordingly. The ability to manually add carpets and define specific cleaning strategies for different areas provides useful flexibility for households with varied flooring.

Mopping performance

The S16 Plus delivers exceptional mopping performance through its OZMO ROLLER system. This is a significant advancement over traditional robot mopping approaches, particularly when dealing with spills and stubborn stains.

The roller-based system can mop up messes in one pass, rather than traditional mop pads, which partially clean and partially spread liquid around. The mopping performance appears superior to conventional dual-pad systems, with areas looking visibly clean and properly dampened after a single pass.

The system’s ability to extend sideways for edge cleaning addresses one of the traditional weaknesses of robot mops. The extending roller reaches areas that fixed systems cannot access, providing more thorough coverage along perimeters and ensuring walls and baseboards are properly cleaned.

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, premium options like the Dreame L40 Ultra can extend its flat mop outwards, which can get a bit closer to some edges and under some crevices. That being said, I think the roller design is superior.

Vacuuming Performance

Despite the reduced peak suction compared to the M14 Plus, the S16 Plus delivers excellent cleaning performance across multiple surface types. The 16,600Pa suction proves more than adequate for both fine dust particles and larger debris, whilst the enhanced airflow design improves efficiency and reduces battery consumption.

It is difficult to objectively say if the BLAST technology, which improves airflow, makes this perform better or worse than the M14 Plus. Doing some basic synthetic tests using flower and rice, both vacuums performed superbly. The S16 Plus does seem to run quite a bit quieter, which makes sense due to the improved airflow.

The ZeroTangle 3.0 technology continues to excel at managing hair and pet fur. The combination of the V-shaped main brush and strategically positioned side brush effectively prevents hair entanglement, reducing manual maintenance requirements. During extended testing periods, the system consistently cleared long hair without intervention, making it particularly suitable for pet owners or households like mine, where my partner has long hair and constantly sheds.  

Omni Station and Maintenance

The Omni Station provides automation for maintenance tasks, handling dust disposal, mop washing, water refilling, and drying operations.

The 150-day maintenance-free operation claim appears realistic for average households, though actual intervals will vary based on usage patterns and home conditions.

 The 3-litre dust bag capacity and water tank arrangement provide reasonable capacity for most homes, though frequent water tank emptying and refilling is required much more often compared to dust collection intervals.

Automatic detergent dispensing adds convenience for regular mopping tasks, though the proprietary detergent requirement may increase ongoing costs. The transparent tank design allows easy monitoring of supply levels, providing clear indication when refilling becomes necessary.

Battery Life

The S16 Plus features a substantial 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.

The practical impact of this difference depends on home size and cleaning requirements. For most average-sized homes, the S16 Plus provides sufficient runtime to complete a full cleaning cycle. Larger properties or homes requiring multiple cleaning passes will particularly benefit from the extended battery life.

Both the S16 Plus and competing 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.

In my case, I can’t say I have ever paid much attention to the battery life of robot vacuums. I think all the robot vacuums I’ve reviewed in the past couple of years have been able to clean my house in one go. Even if they can’t, the recharge-and-resume functionality means it completes the recharge and clean with no input from me. 

My situation does have some caveats. While my property is larger than average for UK homes, it is much smaller than many US homes where the Yeedi is available. That being said, the

Price and Alternative Options

The Yeedi S16 Plus has an RRP of $1,600

The older S14 Plus had an RRP of $1,400 which was discounted to $900 during Prime Day. Then the M14 Plus has an RRP of $1300 which was discounted to $800 during Prime Day.

The Yeedi S16 Plus is largely similar to the Ecovacs X9 Pro Omni. This has a RRP of $1600, just like the S16 Plus, but this is also available in the UK. In the UK it is available from Amazon for an RRP of £1479 discounted to around £1300.

Overall

The Yeedi S16 Plus is an excellent premium robot vacuum.

The BLAST airflow technology appears to provide a genuine engineering advancement, providing efficient cleaning despite lower raw suction power than the M14 Plus. Admittedly, it is hard to tell if or how much better this is, especially when compared to the higher suction of the M14 Plus.

The 23% larger battery capacity addresses coverage concerns for larger homes, whilst the advanced OZMO ROLLER system delivers superior mopping performance compared to traditional pad-based systems.

One annoyance is that the smaller dirty water tank capacity (2.2L versus the M14 Plus’s 4L) requires more frequent maintenance attention. I already find that I have to empty the tank more frequently than I can remember, so this is not ideal.

For buyers specifically seeking the latest mopping technology and extended battery life, the S16 Plus is a good recommendation.

I think the BLAST technology gives the S16 Plus a slight edge in cleaning performance (and reduced noise), but the smaller water tank is a bit off-putting.

In my opinion, the primary consideration is the price difference between this and the M14 Plus. With a $300 difference in RRP, I think I’d be inclined to get the M14 Plus, I am not sure the improved airflow is worth that much. However, if the price is closer at the time of purchase, I’d likely opt for the S16 Plus.

James Smythe( Editor-in-chief )

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.