eufy S1 Pro Robot Vacuum Review

Build quality is excellent. The vacuum itself is made of dense, hard plastic that looks and feels premium. The removable top cover has a satin finish and is reasonably fingerprint-resistant, but it does make the vacuum somewhat slippery. Its glossy front bumper does add a bit of visual contrast but it also scratches very easily. Its squared-off shape is meant for improved cleaning performance in corners, and it boasts some unconventional design choices, most notably its hidden LIDAR sensor, which is effectively hidden within the front bumper, just above the front imaging cameras.

This vacuum incurs reasonably demanding maintenance requirements, not because it's difficult to clean but simply because many parts need to be washed periodically. Parts that need to be accessed regularly on the vacuum, like the brushroll, mop roller, dustbin, and waste water tank, can be removed pretty easily. The only real sticking point is the second of its three dirty water tank filters, which takes quite a bit of force to remove.

The multifunction dock incurs its own set of maintenance requirements. As with the vacuum itself, accessing commonly accessible components like the dustbag and clean and dirty water tanks is simple. Adding the floor cleaner bottle is also pretty easy, though you will have to remove the clean water tank to replace it anyway.

If you're interested in seeing a full breakdown of the maintenance requirements associated with this vacuum, you can consult the user manual.

The eufy S1 Pro incurs high recurring costs.

• Brushroll: You'll need to replace the brushroll after 360 hours of use. A replacement can be purchased online. While the brush guard isn't listed as a component that needs to be replaced, you can buy a new one if it gets damaged.
• Side brushes: The side brushes have a service life of roughly 180 hours. You can buy a new set from the manufacturer's website.
• High-Performance Filter: The filter needs to be replaced every three months. You can buy a two-pack of replacements online.
• Rolling Mop: You should replace the mop roller every six months. A replacement can be purchased from the manufacturer's website.
• Dirty Water Reservoir Filter: The three-part waste water reservoir filter should be replaced following 360 hours of operating time. You can buy a new set online.
• Multi-function dock dirtbag: The dirtbag's advertised capacity is 2.5L, which is sufficient to hold up to 68 days' worth of debris. You can buy a three-pack of replacements from the manufacturer's website.
• Floor Cleaner: The floor cleaning solution is optional but can help achieve a more thorough clean when dealing with stains. A single 600 ml bottle should last a month, and you can buy a refill online.

eufy also offers a Half Year Combo kit that includes:

• 1x brushroll
• 1x brush guard
• 4x high-performance filters
• 3x dustbags
• 2x pairs of side brushes
• 2x rolling mops
• 1x three-piece dirty water reservoir filter

It's worth noting that this kit actually costs more than buying all the included components separately.

This vacuum's internal dustbin is tiny, likely as a result of the fact that the vacuum also has to accommodate a pair of water tanks. On that topic, they have similar capacities to the dustbin, with the clean water tank having an advertised capacity of 0.24L and the dirty water tank having a capacity of 0.22L. With all of that being said, the dustbin's limited capacity isn't that big an issue due to its auto-empty system.

The eufy S1 Pro's UniClean docking station is packed with features. It has a self-emptying function, in which debris is sucked from the vacuum's dustbin into an internal dirtbag. On that topic, despite sharing the same advertised 2.5L capacity as the eufy X10 Pro Omni, the S1 Pro's dock has a narrower shape. As a result, it can't accommodate bags that are filled to their limit, and you'll need to replace them more often. The dock will send you an alert when the dustbag is full and due to be replaced.

The dock also refills the vacuum's clean water tank, and you can add a cleaning solution for clean water tank to better deal with stains. This clean water tank has a built-in ozone generator to aid in minimizing bacterial buildup.

eufy S1 Pro vacuum

• Robot vacuum
• Magnetic robot cover
• 2x pairs of side brushes
• Dust bin
• 2x dust bin filters
• Brushroll
• Brushroll guard
• 2x rolling mops
• Dirty water reservoir
• 1x 3-piece dirty water reservoir filters
• Robot water wink
• Cleaning tool
• Owner's manual 

UniClean Station

• Multifunction dock base
• Dirty water tank
• Clean water tank
• 1x 600 ml bottle of Hard Floor Cleaner
• Dock filter tray
• 2x dustbags
• Power cord
• Cord cover

This vacuum returns to its dock when its charge drops to 10%, which is a slightly lower threshold than most other robot vacuums, which helps extend its runtime. It's also advertised as being able to recharge from 10% to 65% in just two hours; combined with its recharge and resume functionality, this minimizes downtime between cleaning sessions.

If you need to replace the vacuum's battery, you'll need to disassemble the vacuum's bottom half. A replacement can be purchased online.

This vacuum is quite feature-packed, though overall functionality is ultimately pretty similar to the eufy X10 Pro Omni. There are a variety of dedicated cleaning functions that will force it to clean only certain areas or in certain modes. There's Vacuum Only, which restricts the use of the mop, BoostIQ mode, which automatically increases suction on carpets; and, of course, the default Normal Cleaning mode, which allows it to vacuum floors and mop hard surfaces in one go thanks to its mop lift function, which raises the mop pads by 12 millimeters when it's passing onto a carpeted surface so that it won't get them wet.

If you'd like to manually select its power setting, there are four to choose from: the energy-efficient Quiet mode, the default Standard mode, Turbo, and Max. You can also tweak its pathing behavior through four levels to tailor how fast it moves through a room.

The eufy's 3DMatrixEye obstacle avoidance system combines infrared and RGB Cameras, similar to the systems found on higher-end Roborock models such as the Roborock S7 MaxV. For a more feature-rich alternative, consider the Dreame L40 Ultra.

Performance on bare floors in the Standard suction mode is great. The vacuum does a good job of clearing away a wide variety of debris types, ranging from bulky debris like cereal to finer debris like sand. While its side brushes can fling lighter debris outward, the vacuum is thorough enough to clear away this mess afterward. In addition, these side brushes, combined with the vacuum's square-ish shape, do result in slightly better cleaning performance in corners and along walls compared to some alternatives.

Debris-pickup performance on low-pile carpets is mediocre. It performs similarly to the eufy X10 Pro Omni in this regard, being reasonably effective in dealing with large and medium-sized debris but struggling with finer material.

In contrast to its performance on bare floors, the eufy S1 Pro also struggles with debris placed along walls and in corners. This seemed to be mainly down to a quirk in its hazard avoidance system; in testing, the vacuum registered a non-existent shoe as being an obstacle. This potentially could have been caused by the stark contrast between the dark surface of our testing carpet and the lighter debris. We encountered a similar issue with the eufy X10 Pro Omni in testing and were able to resolve it by disabling its hazard detection system. Unfortunately, the S1 Pro doesn't give you the same option.

In testing, we found the eufy S1 Pro's debris pickup performance on low-pile carpet to be poor, mostly as a result of navigational issues. Even with the Small Object Less Collision Mode turned off, the vacuum would still move in an erratic pattern and miss some sections within our boundary box. Rebooting the vacuum and having it generate another coverage map did nothing to improve performance, and doing so a third time resulted in the vacuum perceiving debris in the corner of the boundary box as being an obstacle to avoid.

The eufy S1 Pro's pet hair pickup performance on low-pile carpets is disappointing, even with its BoostIQ mode on. It doesn't provide enough surface agitation to lift away pet hair that's been pressed deeply into carpet fibers. Check out the Roborock S8 MaxV Ultra if you want something that does a better job of handling pet hair.

Airflow performance is good for a robot vacuum. It performs almost identically to the eufy X10 Pro Omni in this regard, which should come as no surprise given they're advertised as having suction motors with similar power figures. Overall, it'll do an okay job of lifting away heavier debris.

This vacuum is pretty quiet in normal operation. You won't have any trouble hearing nearby conversations even when the vacuum is running in the same room in its Standard setting. However, it does get pretty loud at higher power modes; with noise levels reaching as high as 70.1 dBA in its Turbo setting, you can expect a bit of disruption if you have a lot of carpeting at home. Its multi-function dock is also on the louder end of the scale, reaching 76.8 dBA during the self-empty process, which can be a slight annoyance if it were to engage in the same room.

This vacuum's obstacle adaptability performance is alright overall. It's impressively thorough and, unlike a lot of other robot vacuums, does a good job of cleaning around obstacles like furniture legs. There's a caveat, however: in its standard height sensitivity mode, the vacuum is slightly over-cautious and won't enter areas where it could still physically fit. Changing the height sensitivity setting to Free Mode effectively resolves this issue. Due to its hidden LIDAR sensor, it's also short enough to clean under lower couches and chairs. That said, it does occasionally bump into some types of furniture. You might want to set up a no-go zone around full-length mirrors as well as coat racks, as the S1 Pro can bump into them at relatively high speeds.

This vacuum's real-time obstacle-avoidance performance is excellent. Whether it's on bare floors or carpet, you'll seldom, if ever, have to pick the vacuum up and free it from an obstacle like a power cord or thin sock. While it might occasionally graze larger obstacles like shoes or a feeding bowl, its camera-based detection system is highly consistent when it comes to correctly identifying and avoiding pet waste.

This vacuum is somewhat tall, with mediocre height clearance. This vacuum can sneak under taller tables and armchairs with minimal fuss, but its LIDAR sensor tower can get in the way when it tries to maneuver under TV stands and couches.

It's worth noting that this vacuum does have an adjustable height detection sensitivity setting with three levels of restrictiveness; the above results were achieved in Free Mode, which effectively disables this limiter. In the more conservative Safe Mode and Medium Mode, the vacuum would avoid the 9.5 cm (3.7") threshold. 

This vacuum does a decent job of clearing thresholds, falling squarely in line with most other robot vacuums on the market. It lacks any sort of highly advanced chassis lifting system but should still handle most wood or laminate room dividers without an issue.

This vacuum isn't all that great at sealing in allergens, which can escape from its exhaust.

This vacuum has poor crack-cleaning performance in its Standard suction mode. It's a little more effective than some other alternatives, like the Shark PowerDetect RV2820ZE, in lifting away debris from shallower cracks, but its twin side brushes can make a bit of a mess in doing so. However, doing a second pass in the 'Max' suction setting results in slightly improved performance.

The eufy S1 Pro's mopping performance is good overall. Using the Deep mopping pressure setting and the x2 pathing preset resulted in a pretty sizeable impact on dried-on stains, though it's best to run a second pass to clear away really stubborn messes. The mop roller does get pretty dirty while cleaning, but thankfully, the mop-washing process works quite well.

It's worth noting that we didn't observe much of a difference between using the provided Hard Floor Cleaner versus mopping with just water.

Eufy explicitly warns against using this vacuum on wet surfaces.

You can operate this vacuum without its companion app, though overall functionality is pretty limited. There are two buttons on the vacuum: pressing the 'Power' button starts a cleaning cycle, while pressing the 'Home' button sends it back to its dock.

The dock also has a few basic control buttons, which you can use to send the vacuum back to its dock, start a cleaning cycle, switch between vacuuming and hybrid cleaning modes, or start the mop roller cleaning cycle. Finally, there's a built-in LCD screen that allows you to view the vacuum's current settings.

The eufy S1 Pro provides a remarkable wealth of customizability through the eufy Clean companion app. Once the vacuum has mapped out your home, you can divide areas, set no-go and no-mop zones, set up boundary lines, or adjust its cleaning schedule room by room. You can also use the app to direct it remotely using an in-app remote control, change vacuuming and mop settings on the fly, and view cleaning history or its current location while it's on a job. The app also provides a comprehensive overview of vacuum maintenance procedures.

There are a few minor downsides, however; in testing, we found that the vacuum would lose connection to the internet periodically: this is likely due to the fact that it's only compatible with 2.4 GHz networks, and there's a significant amount of interference within our office. In any case, let us know if you own a eufy S1 Pro and have experienced a similar issue at home. Unusually, the app also periodically requests access to your device's Photos folder for screenshots, even after repeated denials, which is something of a privacy concern.