Eufy Omni C20 Robot Vacuum and Mop Review 2025

People venturing into the world of the best vacuum and mop combos, unsure of their needs, might be well served by the mid-range Eufy Omni C20. It's capable of cleaning debris from carpet and hard floors with a base station that alleviates a lot of manual work, with features like automatically washing and drying the mop pads and customizable settings like pricier units but is pared down with smaller bins and more basic sensors to save money and space.

I've been writing and testing these smart home products for years. The Eufy Omni C20 sticks out as a capable cleaning assistant for smaller homes and less square footage. It's compact without sacrificing self-emptying or automated maintenance, but it does make some trade-offs, especially around its object avoidance system and ability to completely avoid carpets when mopping. It's not as good as higher-end products, but it should still be sufficient for a wide range of people.

eufy Omni C20 The eufy Omni C20 is more compact, both the robot and its base station, but it doesn’t sacrifice auto-emptying dirt or auto-washing its mop pads. It’s a solid alternative to the growing size of some combo units, at an approachable price point. Check price at Amazon What we like Check mark icon A check mark. It indicates a confirmation of your intended interaction. Compact unit and base station

Check mark icon A check mark. It indicates a confirmation of your intended interaction. Solid navigation and path planning

Check mark icon A check mark. It indicates a confirmation of your intended interaction. Strong scrubbing What we don’t like con icon Two crossed lines that form an 'X'. Doesn't lift mop high enough to avoid touching thicker rugs

con icon Two crossed lines that form an 'X'. Obstacle avoidance isn’t quite as good as some others (as evident by one accident with a plant)

con icon Two crossed lines that form an 'X'. Felt a little flimsy

con icon Two crossed lines that form an 'X'. Hair wrapped around brush roll Specifics Suction: 7,000Pa

7,000Pa Dustbin: 3.1 liters

3.1 liters Mop type: Dual spinning pads

Dual spinning pads Self-cleaning: Yes with room-temperature auto drying

Yes with room-temperature auto drying Battery: 132 minutes

132 minutes Navigation: Lidar

Lidar App: iOS, Android

iOS, Android Waranty: 1 year

Design

The thing that sets the Eufy C20 apart from other vacuum and mop combos is its design. It's not the black plastic shell that's meaningfully important but the robot's compact frame. At 12.91 by 13.14 by 3.35 inches, it can fit under cabinet toe-kicks and between chairs with ease. This device is a prime example of how even an inch can make a big difference. Where the Shark PowerDetect, the best 2-in-1 robot I've tested for its ability to combine performance and value, would often get stuck with only a single exit, the C20 had no problem entering and exiting spaces.

Although not invisible by any stretch, the C20's base station is also more compact and tightly packed than other ones with the depth of similar features. Eufy did an admirable job of keeping things like dustbin emptying, water emptying, mop pad washing, and mop pad drying intact in a petite base station.

Setup

After spending years buried by smart home gadgets, I've learned to appreciate when products have a polished companion app. Eufy, an Anker sub-brand, is one of those that has a good app experience. My one complaint in this area is that it has migrated from its Eufy Clean app to a more generic "Eufy" one that encompasses more of the company's products. I'm not sure I want my robot lawn mower, smart scale, and vacuum all in the same app, for a variety of reasons. But I can also understand not wanting to have to use several different apps for products from the same company.

After connecting with its app to do an initial mapping run of your home, you can configure no-go zones and tweak the map with labels and merging rooms to get it exactly how you want it. Unpacking the base station and robot only requires removing packing materials and connecting a few pieces, like the power cord and mop pads.

Cleaning performance

The 7,000Pa of suction isn't as glamorous as today's premium models, theC20 held its own in our pick up tests, though struggled more with superfine particles, like flour, and cleaning in corners. Tyler Hayes/Business Insider

Vacuuming

The C20 is stocked with a fair amount of features, but in terms of performance, it's still solidly in the low to mid-range. For example, it has a rated 7,000Pa of suction, which isn't as glamorous a specification as it once was for these products. Some of the recent robots I've tested can boast 20,000Pa of suction, with the latest models even going beyond that.

In my carpet tests, I used coffee grounds, flour, and crushed cereal to get a sense of how much it sucked — pun intended. It vacuumed around 85% of spilled coffee grounds, 82% of spilled flour, and 95% of the crushed up Cheerios. The mid-range suction level is also a contributing factor for its inability to pull the smaller particles from crevices, as well as some models.

One of the things I noticed while watching its various treks across different types of rugs was that its petite size turned out to be a double-edged sword. I often saw it bounce across carpet, less firm and planted compared to hard floor surfaces. It was also noticeably loud on boost mode.

Another area it performed only decently was its ability to get into corners. I spread a line of flour out from a corner, and the C20 collected about 75% of the debris. This was a better performance than the iRobot Roomba 205's 60%, but far from the 97% of the very expensive Roborock Saros Z70.

After several weeks of use, I found only a few strands of hair on the main roller, though the side brush collected more. Unlike snap-off designs, the side brush also requires a Philips Head screwdriver for removal. Eufy recommends the C20 for short-haired pets, and based on my tests, it should handle light fur but could get overwhelmed with heavier shedding.

The Eufy Omni C20 was able to mop up mustard I spilled on the floor without much difficulty, but it did transfer a little residue on to my carpet when the mop lifting mechanism didn't go high enough. Tyler Hayes/Business Insider

Mopping

I didn't find the C20 to be a mopping powerhouse like the Shark PowerDetect, but it was still plenty effective. Its twin mop pads spin 180 times per minute with 6N of pressure, about average for this category. Using the mopping and vacuuming setting, it vacuumed and mopped 95% of the coffee grounds, 89% of the flour, and 99% of the crushed cereal.

The weakest performance was with the flour, which made a slight mess and showed a light smear on its final pass. Similarly, the C20 was able to handle drops of splattered mustard on the floor, but not as well as the Shark PowerDetect, and ended up leaving a few traces during a normal kitchen cleaning.

The twin microfiber mop pads are supposed to lift up when they detect carpet. I didn't notice much hair wrap around the brushroll or side brushes, either. Tyler Hayes/Business Insider

The good news is that the C20 can auto-detect carpet while it's mopping in which mopping pads stop spinning and raise up to avoid soaking the carpet. The bad news is that the 0.41-inch mop-lifting claim just isn't very much in practice, and I still had to manually clean a few spots of mustard after a cleaning pass because the pads couldn't lift high enough.

To its credit, however, the base station's mop pad washing feature did largely take care of the mess, and the robot didn't smear the condiment all over its undercarriage.

Smart features and navigation

The Eufy app is your hub for customizing your settings and monitoring cleaning progress and accessory lifespan. Tyler Hayes/Business Insider

The Eufy mobile app is polished and easy to navigate.

The part I like about the app, as a nerd, is all the extended settings. You can tweak the map, adjust suction and water output, carpet cleaning, base station settings, robot settings, voice settings, and drive the robot manually. The app can also handle multiple cleaning schedules for different needs, such as vacuuming one room three days a week and a different room only once a week.

Whether you see it as an upsell, the app tracks how much wear all of the sensors, brushes, and filters have endured, and when it's time to clean or replace them. Tapping on one of the items will show a picture of where the piece is located, how to handle it, and a purchase link if you need a replacement.

Another nice feature, not available for all robot cleaners, is the ability to share the device with someone else. They'll need to download the Eufy app, and then, it'll appear in their app for them to control and use just like it was theirs. Not only is it neat, but it worked exactly like I hoped it would.

The area where the C20 is less smart is its navigation—specifically object avoidance. It forgoes LiDAR mounted on the top, in favor of it being positioned in the front. This keeps the unit thinner than others, but lacks cameras that can identify objects. Even on Eufy's website, tucked away when comparing models, it lists that this device isn't up to the task of avoiding pet waste, cords, and small toys. I saw most of those things in action, firsthand. Once it pulled a hanging plant, whose leaves were dangling to the ground, off a shelf. It also traveled over cords when they were left around.

Those things may sound egregious, and they can be. I lost a beloved plant in the action! But most of the time, the C20 navigated my floors just fine. Likely, the bigger concern for most people will be the unit's aggressiveness around certain types of furniture. I noticed it bumping into my dining chairs' thin legs harder than other robots — though not enough to damage them.

Around baseboards, couches, and reclining chairs, it had no problem and slowed its approach. For the few places I do keep all robots away from, I added a no-go zone in the app. People with young kids, who constantly have random objects strewn across their floors, may want to avoid this model in favor of the Omni X10 Pro, which has better vision.

Self-cleaning and maintenance

The water tanks were easy to fill and empty, with a nice swivel out design. Tyler Hayes/Business Insider

On normal use, I found the 2.5-liter clean water tank to last between 7 to 14 days, depending on how frequently the hard surface rooms were being cleaned. But even running the combo unit several days a week, you should be able to go a week without much manual effort. The 2.4 liter dirty water tank can last about the same amount of time, but I would recommend giving it a rinse every five to seven days to keep grime from getting caked on.

During an average run, the robot returned to its dock to empty its dustbin after vacuuming about 250 square feet and then resumed where it left off. The good news is that the 3.1-liter dust bag in the base station is plenty big. For me, it can last up to several months, but your mileage will depend on the amount of debris.

The same thing happens with washing its mopping pads during mopping sessions. You can either have it wash its pads every five to 12 minutes, or you can set it to a SmartWash Scheduler and let it decide how often to return to its base station. Washing the pads every five minutes will significantly improve your mopping performance, avoiding spreading messy foods, but it will also add time, noise, and drain the battery faster.

The mop-pad air drying adds a low hum that may register as white noise — or an annoyance. Thankfully, the drying feature works relatively quickly. I found it could dry the pads with its use of room temperature air in a couple of hours.

Battery life and charging

Eufy doesn't highlight a specific amount of runtime. Instead, it gives some area coverage estimates, with the peak being 950 square feet on the lowest suction mode. In Turbo mode, it cleaned about 340 square feet in 50 minutes, using roughly half its battery, which aligns with Eufy's estimate of its ability to clean 760 square feet.

Cons to consider

My planter was a casualty of the eufy's obstacle avoidance when it failed to detect a vine that was low to the ground. Tyler Hayes/Business Insider

The biggest concern about the Omni C20 is its navigation and general obstacle avoidance. However, its mediocre performance in this area won't be a dealbreaker for everyone, only some people. This product really isn't for people with a lot of unpredictable clutter. It will be fine for those who don't have a changing landscape.

This is a solid choice for people who need to prioritize cost over pristine performance, but be aware that its lower cost and smaller size do compromise some of its skills.

What are your alternatives?

The Shark PowerDetect is our top choice when it comes to robot vacuum and mop combos, but its more expensive. I thought it had superior mopping. Tyler Hayes/Business Insider

As long as physical size isn't your primary selling point, the Roborock QV35A, part of the Q Revo series, is a worthy alternative to the C20. On paper, the QV35A has slightly stronger suction power and better reactive object avoidance. It is bigger than the C20 and uses cold air for mop pad drying, which can take longer. After using this unit, these trade-offs are a fair assessment. Read our Roborock Q Revo review.

The Shark PowerDetect Never Touch Pro is another alternative that has a reasonably petite base station, if that aspect is important to you. That unit is a better mopping robot, but it isn't as affordable as the C20. I think its one of the best robot vacuum and mop combos I've tested that will suit most people's needs. Read our Shark PowerDetect review.

If you want to stick within the Eufy brand, the Omni X10 is truly the next step up with better specs across the board, introducing enhanced object avoidance, hot air drying, and better hair removal. Above that model is the flagship Omni S1 Pro, which I found to be thoroughly impressive for suction, mopping, and smooth navigation. For an even more budget, vacuum-only option, we got on pretty well with the L60, which is available with our without a base station, but it too struggled with larger debris and thick pile carpets.

The bottom line

The Eufy Omni C20 is ideal for those who want to avoid constantly having to pull out a vacuum and mop for daily maintenance without compromising on specs like self-cleaning mop pads. Tyler Hayes/Business Insider

The Eufy Omni C20 is a powerful, very capable entry-level vacuum and mop. It retails for $700 and has been on sale for under $400. Especially for that price point, it does a satisfactory job on short-pile carpet and rugs and scrubbing hard surfaces. It excels, however, at bringing all these features to smaller homes with a compact frame and a fully automatic base station.

This unit has trouble avoiding small objects left on the floor, so getting items unstuck will get old if those things are persistent in your home. The Omni C20 will be the most beneficial for people with simple floor plans who want to avoid constantly having to pull out a vacuum and mop for daily maintenance.