Eufy BoostIQ RoboVac 11S MAX Robot Vacuum Review

Eufy’s 11S Max is a whole-home workhorse. This RoboVac model’s high suction power and climbing capability allow it to clean medium-pile carpets and navigate thresholds with ease. Even when its auto-enhanced suction mode is active, the robot can vacuum for at least a solid hour.

Eufy BoostIQ RoboVac 11S MAX Robot Vacuum Review

The one-piece filter does an excellent job of trapping allergens. Just like the brushes and bin, filter maintenance is no hassle at all. Busy people will also appreciate the RoboVac 11S Max’s oversized dirt bin, self-docking feature and remote-controlled daily scheduling.

Tiered Suction

Out of all the 11S Max’s features, the true standout is its BoostIQ suction. Unique to select Eufy robotic vacuums, BoostIQ technology can detect the type of flooring it’s under. When the robot is on carpet, it will increase the suction to an impressive 2,000 pascals of vacuum pressure.

From the moment the 11S Max detects carpet to the time it raises the suction takes just 1.5 seconds, which is almost instant. When it’s back on hard floors, the robot’s suction lowers to its default standard mode.


Efficient Brushes

Like other well-designed robotic vacuums, the 11S Max has one brushroll and two side brushes. The brushroll is affixed with intertwining bristles for effective lifting power. The pair of propeller-style side brushes spin rapidly to sweep along wall edges and move dirt toward the suction inlet.

A brushless DC motor is responsible for the brushes’ collective efficiency due to its torque-watt ratio. With a brushless motor in place, you can expect quiet operation, a longer lifespan and all-around better performance.

Eufy BoostIQ RoboVac 11S MAX Robot Vacuum

Robust Housing

From top to bottom, the 2.85-inch-tall Eufy 11S Max is tough. Its tempered glass top is resistant to light scratches. The half-moon bumper absorbs shock during accidental collisions. The robotic vacuum also has two high-grip wheels that can climb 0.59-inch-high thresholds.

Autonomous Charging

With a 2,600 mAh lithium-ion battery in place, the varying runtimes for the RoboVac 11S Max are long. When the robot predominately uses its standard suction level, you can get 100 minutes’ worth of working time from it. When BoostIQ mode is frequently engaged, the approximate runtime drops to 60 minutes, which is still lengthy.

The downside to the battery’s high capacity is the 5 to 6 hours it takes to recharge. The good news is you don’t have to push a button to send the 11S Max to its charging dock (unless you want to do it). Eufy programmed the RoboVac to self-dock without the need for human intervention.

Read our Comparison: Eufy BoostIQ RoboVac 11S vs. 11S Max

Enclosed Filtration

Inside the 11S Max, there is a big debris bin. With its 20-ounce dirt capacity, the robot can run for quite a while before you need to dump the bin. You’ll know the moment the bin is full since it’s made of semi-transparent plastic.

The bin holds not only the dirt from your floors but also the filter that contains allergens. The V-shaped pleats make the framed filter well-adept at trapping dust, dander and pollen. Since the filter rests in a closed dirt box, trapped allergens are unlikely to escape.

Eufy 11S MAX Robot Vacuum Review

Four Cleaning Modes

No matter what room or mess needs to be cleaned, there’s a mode suitable for the task. Auto mode and quick-clean mode comprehensively cover large areas. On auto mode, the robot cleans your entire home, only stopping to refuel the battery. On quick-clean mode, the 11S Max vacuums for 30 minutes before it returns to the dock.

Edge mode and spot mode do the detailed work. On edge mode, the robot vacuum travels around the perimeter of every room, removing dirt and dust from corners and along walls. On spot mode, the 11S Max intensively vacuums small, extra-dirty areas for 3 minutes.

Remote Controllable

The 11S Max comes with a full-function remote control. The controller lets you select the cleaning mode of your choice, move the robot in any direction and override the BoostIQ feature. Since the remote has a display screen, you can also set a specific time for the robot to automatically clean on a daily basis. Auto mode is also accessible via the robot’s onboard start button.

Eufy RoboVac 11S MAX

Infrared-Sensor Navigation

Eufy integrated the tried-and-true infrared-sensor method into the RoboVac 11S Max’s navigational system. In total, there are ten sensors, three of which are dedicated to identifying stairs and drop-offs. Multiple sensors locate obstacles in the robot’s path.

When the robot does sense an object or a ledge, Bounce technology enabled it to change course. On quick-clean mode, you’ll notice the 11S Max moving in a random pattern. On spot mode, the robot spirals. The 11S Max cycles between random, spiral and border patterns as needed when it’s set to auto mode.

Hassle-Free Maintenance

Keeping the robot vacuum in working order is a straightforward, painless process. You don’t need a screwdriver or butter knife to remove the brushes and untangle hair. The bin-release button is built into the handle, and a good shake is all it takes to clean off the dust on the unibody filter.

Slim and Strong

Its 2.85-inch height, 100-minute runtime and 2,000-pascal BoostIQ suction make the Eufy RoboVac 11S Max an agile, powerful force with which to reckon. We also appreciate the brushless motor, the multiple cleaning-mode options and the self-docking function. This all sounds great, but how does the 11S stack up to competing models?

Eufy BoostIQ RoboVac 11S MAX

Eufy RoboVac 11S Max vs. Ecovacs Deebot N79S

At first glance, Eufy’s RoboVac 11S Max and Ecovacs’ Deebot N79S seem similar as they share many of the same great features like a 2,600 mAh lithium-ion battery, an auto-dock function, one-touch onboard start and four cleaning-mode choices. Each one comes with a remote control that offers daily scheduling and directional control, and they both move in a random pattern.

Eufy RoboVac 11S Max vs. Ecovacs Deebot N79S

These two robot vacuums are able to clean carpets with the same thoroughness that they do hard floors thanks to dual suction strengths. However, the Deebot’s N79S max-suction mode must be engaged manually while the 11S Max’s BoostIQ mode is an automatic function.

In addition, the Eufy 11S Max’s bin holds 3 ounces more than the Deebot N79S’, and the 11S Max is 0.25 inches shorter, allowing it to fit into tighter areas. Plus, the 11S Max’s filter is a one-piece unit, which is easier to clean than the N79S’ three-piece media.

Ecovacs’ Deebot N79S comes out on top in terms of controls. Its Wi-Fi connectivity with voice control offers more convenience and functions than what the 11S Max is capable of giving. The N79S also has a find-me locator and two types of bristles on its brushroll.

Ecovacs Deebot N79S

Eufy RoboVac 11S Max vs. iRobot Roomba 675

iRobot and Eufy integrated a few of the same advanced features on their respective robotic vacuums. The RoboVac 11S Max and the iRobot Roomba 675 will return to the charger on their own accord when the lithium-ion battery is low. Eufy’s BoostIQ suction offers a level of cleaning automation that’s on par with iRobot’s Dirt Detect sensor. Both robots also have treaded wheels, a shock-absorbing bumper and a one-piece framed filter.

Eufy RoboVac 11S Max vs. iRobot Roomba 675

With the Eufy RoboVac 11S Max, two side brushes offer a wider cleaning path than the iRobot Roomba 675’s sole side brush. The 11S Max’s side brushes just pop off, so you don’t need a screwdriver like you would when removing the 675’s brush.

Since the 11S Max’s battery has a higher capacity than the 675’s 1,800 mAh battery, the 11S Max runs for 10 minutes longer between charges. The Eufy model is also 0.75 inches shorter and 2.07 pounds lighter, making the 11S Max a nimbler navigator.

There are many features unique to the Roomba 675, such as smartphone control that lets you schedule only on the days you want instead of 7 days or none at all. The 675 is compatible with Alexa and Assistant; dock, spot and clean can be activated onboard too. With two brushrolls as opposed to one and an auto-adjusting floor head, the Roomba 675 is better at lifting embedded debris than the 11S Max.

iRobot Roomba 675

Eufy RoboVac 11S Max vs. Shark ION R85

For both the Eufy RoboVac 11S Max and the Shark ION R85, a lithium-ion battery provides suction that doesn’t waver. Each robotic vacuum is equipped with a pair of side brushes and a framed allergen filter. Their large dirt bins hold just about the same amount of debris, and the robots self-dock when their battery charge is low.

Eufy RoboVac 11S Max vs. Shark ION R85

Although the ION R85 works with a smartphone app, it doesn’t have a remote like the 11S Max does. Between the two, the Eufy’s higher capacity battery lasts 40 minutes longer, and the 11S Max stands 0.55 inches shorter.

While the R85 offers three change-by-button suction levels to the 11S Max’s two, the 11S Max suction shift is automatic. The 11S Max is also the winner when it comes to pulling and lifting dirt and dust with suction that’s 600 pascals stronger, intertwining brushroll bristles and edge-mode inclusion.

Unlike the 11S Max, you can control the Shark R85 with your voice, locate the robot via the app and choose from three onboard functions. The R85 takes 1 less hour to charge, and the brushroll can detangle hair by itself. Scheduling is customizable by day, mode and time with the ION R85. Shark also includes boundary strips, which is a tool that Eufy doesn’t provide.

Shark ION R85


5 Recommended Robot Vacuum Cleaners
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iRobot Roomba s9+ (9550) eufy BoostIQ RoboVac 11S MAX Ecovacs Deebot N79S Roborock S5 Robotic Vacuum and Mop Ecovacs Deebot 500
iRobot Eufy Ecovacs Roborock Ecovacs
s9+ 11S MAX N79S S5 500
Continuous 100 min 110 min 150 min 110 min
12.2 x 12.2 x 3.5 in 17.8 x 13.7 x 4.8 in 33 x 33 x 7.8 in 13.8 x 13.7 x 3.8 in 12.9 x 12.9 x 3.1 in
20 pounds 5.73 pounds 7.05 pounds 7 pounds 6.7 ounces
Review Review Review Review Review

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