Eufy Robot Vacuum Omni E35 Review

Design and features

• Roller mopping
• Self-emptying, self-cleaning dock
• App lacks a bit of flexibility

Coming hot on the heels of the Eufy Omni S2, the Eufy Robot Vacuum Omni E35 has many similar features, if not quite the same polish. Rather than the slim, stylish dock and smooth curves of the S2, the E35 has a slightly more basic look and feel, more in line with last year’s Omni E25.

Not that there’s not a lot to like. Get past the slightly more basic looks, and the Eufy Robot Vacuum Omni E35 is well specified, and has some surprising features for the price.

The large docking station is pretty much what you’d expect, with separate water tanks for clean (2.5L) and dirty (2.4L) water. These both lift out from the top, so they’re easy to empty and refill. 

This dock takes detergent, and it’s good to see Eufy move away from pre-filled detergent to a tank that can be manually refilled. That gives you the option to use your own floor detergent.

However, Eufy also supplies its own detergent in the box, so you can fill up when you unbox the robot and get going immediately. Detergent is a feature that the cheaper Roborock Qrevo Edge 2 Flow doesn’t have.

To the side of the water tanks is the disposable 3-litre dust bag, which should be enough space for around 75 days’ worth of dirt. Just pull them out and replace with a fresh one when you’re done.

The Eufy Robot Vacuum Omni E35 is a slightly chunky robot with a fixed LiDAR dome on top. Unlike the Edge 2 Flow, which can lower its dome, the E35’s design means that it will struggle to fit under some sofas and lower furniture, such as sideboards.

There’s a power button to start a clean, and the robot can also be sent back to the dock. Having controls on the robot is useful, but the app gives more control.

At the front is the A.I.See 3.0 camera array, which works with an RGB camera, side line laser and auto-activating LED light to spot and avoid 280 objects.

Open the top and there’s access to the bin and filter. That filter will need cleaning occasionally, but you won’t really need to touch the bin.

Flip the robot over, and the layout is very similar to that of the Eufy S2. There’s the HydroJet 2.0 Self-Cleaning Mop Roller, which takes fresh water for cleaning and removes dirt from the floor, preventing cross-contamination.

The docking station cleans the roller at 60°C, and hot air drying prevents odours and bacteria from building up.

Eufy has installed two side brushes, and one can be extended for better corner and edge cleaning. As the mop can be extended, too, edge performance promises to be good.

What this robot doesn’t have, which the Edge 2 Flow does, is any way of covering the roller. While the roller can be lifted off the floor to avoid short pile carpet, the roller can’t be protected, so there is a risk that some carpeted areas could get wet. For mixed environments, a rival may be better.

In the middle is the DuoSpiral brush, which has a gap in the middle. The idea is that hair gets wrapped around the brush, pushed into the middle and then is sucked up without tangling.

This robot is controlled via the Eufy app, home to the company’s other robots. It’s generally easy to use, and I had no trouble getting my robot connected to Wi-Fi and ready to go. 

A short mapping run is required for the Eufy Robot Vacuum Omni E35 to get your home’s layout, and the app does a pretty good job of guessing where rooms are. If it does get anything wrong, it’s trivial to merge and split rooms.

It’s also possible to add no-go zones, add carpet or floor material, and add furniture to the map. I’m not quite sure what the point of adding furniture is. With rival robots, such as the Roborock Qrevo Edge 2 Flow, furniture acts as a quick-select zone, so you can, for example, clean up around a dining table after cooking. In Eufy’s app, you can see the furniture, but you can’t select it.

For general cleaning, the options are the entire home, a room (or rooms), or a zone that you draw on the map. That’s all what I’d expect from a modern robot.

Cleaning options are a bit more limited with this robot than the competition. There are only two modes: vacuum and mop, and vacuum only. There’s no option to mop only, which feels like an oversight, but one that’s common with other Eufy robots.

For vacuuming options, there are three power modes to choose from. For mopping, there’s a sliding percentage bar to pick the water level, which is too much choice: would 48% water level or 49% be better? A simpler selection would be better.

There are two routing modes, depending on how well you want the robot to cover the ground, and a choice of one or two passes.

Two new modes exist for this robot. Deep Carpet Cleaning, which lets you select a carpeted area for a double, high-suction pass. There’s also a Heavy Stain Deep Mop option, which can be applied to a zone or a room, and lets the robot saturate the area, leaves it to soak in, and then passes over for a deep clean.

The only minor issue with this mode is that it won’t let you draw a zone that extends past a wall, so it can be tricky to make a box cover the area you want; it’s easier to choose an entire room.

Performance

• High suction power
• Excellent edge performance
• Good mopping, but may need help on tough stains

To see how well this robot did, I set it about the Trusted Reviews Home Technology Lab and used my normal tests. I began with my carpet test, adding flour to the floor. With 35,000Pa of suction power, the Eufy Robot Vacuum Omni E35 is, on paper, one of the most powerful robots.

Largely that showed, with the carpet vacuumed brilliantly. However, there were a couple of very small areas missed, which is more of a navigation/coverage issue. 

Sending the robot out again fixed this, and got me a clean carpet.

I performed a similar test on the hard floor. As you might expect, the Eufy Robot Vacuum Omni E35 did brilliantly, removing all of the mess within two passes.

My edge test is next. Here, I add flour right to the edge of the floor where it meets the kitchen plinth. Here, the Eufy Robot Vacuum Omni E35 did as well as any flagship I’ve tested, if not better. Aside from a tiny trace amount, everything was picked up – that’s excellent.

Mopping was generally very good, too. With my dried-on coffee stain, the Eufy Robot Vacuum Omni E35 cleaned it within two passes.

The same was true for my dried-on red wine stain, which was removed quickly.

With the mud stain, which has lose particles and a dried-on component, the Eufy Robot Vacuum Omni E35 vacuumed up what it could, and the roller quickly sorted out the rest.

My toughest test is the ketchup stain, which is dried-onto the floor. As is common with robots at this price, the Eufy Robot Vacuum Omni E35 struggled after two passes and left a lot of mess behind.

Even the deep mopping option left quite a bit of mess behind. In the end, I found it easier to spray the mess with kitchen cleaner, and then let the Eufy Robot Vacuum Omni E35 make two cleaning runs, which remove the vast majority of the mess, bar a tiny amount. This solution is easier than scrubbing the mess by hand.

I also added human hair to the floor, and then let the vacuum cleaner pick it up. After the robot had finished, the hair was collected, and no strands were wrapped around the brush.

Navigation is very good for this model. It avoided my shoes, socks, pet mess and cables that I left down, and the robot didn’t get stuck on anything.

Battery life is as I’d expect from a modern robot: good enough to make a couple of cleaning passes around the lab, and with enough power left for spot cleaning.

Should you buy it?