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eufy Omni C20 Robot Vacuum Review

Tested using Methodology v0.8
Reviewed Jan 24, 2025 at 09:22 am
eufy Omni C20 Picture
7.0
Bare Floor
6.4
Low-Pile Carpet
6.4
High-Pile Carpet
6.0
Pets

The eufy Omni C20 is a mid-range robot vacuum with mopping capabilities. Its features include an iPath sensor, multi-floor mapping capabilities, and a multifunction dock for charging, auto-emptying its dustbin, and washing and soaking its mop pads. This vacuum has no built-in reservoir; the dock pre-soaks its mop pads before a cleaning cycle. The eufy Clean app offers a wide range of customization options for suction, pathing, and dock-related settings related to maintenance and cleaning tasks. Finally, there's support for Alexa and Google Assistant.

Our Verdict

7.0 Bare Floor

The eufy Omni C20 is a decent choice for bare floors. Its debris pickup performance on hard floors is great overall, but it struggles to clear debris from cracks and crevices in old wood flooring. Similarly, it has difficulty maneuvering around common obstacles like electrical cords, and its dirt compartment is tiny, resulting in frequent trips back to its multifunction dock for auto-emptying. On the upside, the dock performs most of the day-to-day maintenance you might expect with a robot vacuum. Also, it's very quiet during operation, so you don't need to worry about running cleaning cycles during work meetings or when you're having a conversation. Just know that many parts require periodic replacement between the vacuum and the dock, resulting in high recurring costs.

Pros
  • Great performance on bare floors.

  • Effective at clearing debris along walls.

  • Quiet operation.

  • Multifunction dock handles much of the day-to-day maintenance.

Cons
  • Poor debris clearing from flooring cracks.

  • Inconsistent maneuvering.

  • Tiny internal dirt compartment requires frequent emptying.

  • High recurring costs.

6.4 Low-Pile Carpet

The eufy Omni C20 is acceptable for use with low-pile carpet. It does a decent job clearing most debris and can handle pet hair sitting on top of the carpet, but it isn't very effective at lifting fine debris like sand from carpet fibers. Its dirt compartment is also very small, so it needs to return to its multifunction dock for auto-emptying often. Thankfully, the dock takes care of most of the day-to-day maintenance requirements. It's very quiet during operation, so it won't bother you during work calls or when you're talking with people. Finally, there are high recurring costs due to the many parts that require periodic replacement.

Pros
  • Effective at clearing debris along walls.

  • Quiet operation.

  • Multifunction dock handles much of the day-to-day maintenance.

Cons
  • Struggles with fine debris in carpet fibers.

  • Inconsistent maneuvering.

  • Tiny internal dirt compartment requires frequent emptying.

  • High recurring costs.

6.4 High-Pile Carpet

The eufy Omni C20 is a passable option for living spaces with high-pile carpet. While it can clear most debris and pet hair, its brushroll tends to drag some pet hair around, and its side arm tosses larger debris around. Also, it has difficulty lifting fine debris like sand from carpet fibers. Maneuvering on plusher carpets or rugs can also be challenging for this vacuum, as it tends to get stuck on rugs and tassels and has difficulty getting onto taller carpeting. But it's quiet when vacuuming carpet, and the dock takes care of daily maintenance tasks.

Pros
  • Effective at clearing debris along walls.

  • Quiet operation.

  • Multifunction dock handles much of the day-to-day maintenance.

Cons
  • Struggles with fine debris in carpet fibers.

  • Inconsistent maneuvering.

  • Tiny internal dirt compartment requires frequent emptying.

  • High recurring costs.

6.0 Pets

The eufy Omni C20 is not a bad option for pet owners. It does a good job of clearing pet hair on top of carpets, but its brushroll also drags some around, and its mops aren't effective at cleaning stains. Thanks to its auto-emptying base station, you won't have to dispose of pet hair from the vacuum's dustbin manually. Unfortunately, this vacuum also does a poor job of sealing in fine particles, so pet dander can bypass the vacuum's filter and exit from its exhaust. Finally, there are high recurring costs owing to the many parts requiring periodic replacement.

Pros
  • Effective at clearing debris along walls.

  • Quiet operation.

  • Multifunction dock handles much of the day-to-day maintenance.

Cons
  • Struggles with fine debris in carpet fibers.

  • Inconsistent maneuvering.

  • Tiny internal dirt compartment requires frequent emptying.

  • High recurring costs.

  • 7.0 Bare Floor
  • 6.4 Low-Pile Carpet
  • 6.4 High-Pile Carpet
  • 6.0 Pets
  1. Updated Jan 24, 2025: Review published.
  2. Updated Jan 17, 2025: Early access published.
  3. Updated Jan 13, 2025: Our testers have started testing this product.
  4. Updated Dec 16, 2024: The product has arrived in our lab, and our testers will start evaluating it soon.
  5. Updated Nov 28, 2024: We've purchased the product and are waiting for it to arrive in our lab.

Differences Between Sizes And Variants

We tested the eufy Omni C20. While there aren't any variants, you can purchase several bundles or subscription services with varying accessories through eufy's website. These bundles and subscriptions vary according to region, so check out your regional site for more details.

See our unit's label. Let us know in the comments below if you come across another variant of this vacuum so that we can update our review.

Compared To Other Robot Vacuums

The eufy Omni C20 is a mid-range robot vacuum with mopping capabilities. While it's generally well-equipped, there are some compromises. For example, this vacuum lacks a built-in water reservoir. Instead, the dock pre-soaks its mop pads before a cleaning cycle. As a result, this vacuum needs to return to its dock more often than most, which can add time to cleaning cycles, and the lack of consistent water flow can lead to uneven cleaning. Also, the dock can't heat the water or air to wash and dry the mopping pads. Vacuum performance is a bit hit or miss. It's great at clearing debris from bare surfaces like hard flooring, but carpeting proves challenging as it struggles to clear fine debris and can get stuck on thicker carpeting. Finally, its dirt compartment is tiny, so you can expect it to return to its dock often to empty it. This is a good option for people looking for as much versatility as possible from a mid-range device, but anyone whose home has a lot of carpets should look elsewhere.

If you're looking for alternatives, see our recommendations for the best robot vacuums, the best robot vacuums for pet hair, and the best robot vacuums for carpet.

Roborock Qrevo S

 The Roborock Qrevo S and eufy Omni C20 are both robot vacuums with mopping capabilities. The Qrevo S is the clear choice where mopping performance is concerned. It's much more effective at removing stains from hard surfaces, and its dock can dry its mop pads with hot air. While they perform similarly on bare surfaces and carpeting, the C20 is better for dealing with pet hair, though know that it hardly excels in this regard. 

eufy X10 Pro Omni

Although the eufy X10 Pro Omni is a higher-end and more feature-rich robot vacuum than the eufy Omni C20, the C20 performs better overall. It delivers better debris pick-up performance on every surface type. That said, the Pro Omni is better built. 

Dreame L10s Ultra

The eufy Omni C20 and Dreame L10s Ultra are both robot vacuums with mopping capabilities. While they perform similarly overall, the C20 takes the cake overall despite not having as many bells and whistles. It delivers better debris pick-up performance across surface types, although the L10s Ultra's mopping system does a much better job. Another place where the L10s Ultra has the edge is maneuverability. It has real-time obstacle avoidance sensors that work fairly well, while the eufy struggles with common obstacles and tends to get stuck on certain carpeting and tassels. 

eufy L60

The eufy Omni C20 and eufy L60 represent eufy's mid-range and entry-level offerings, respectively. As may be expected, the C20 performs much better overall. It can clear more debris across various surface types and is more effective at dealing with pet hair. It also includes mopping capability and comes with a dock, whereas these are options for upgraded L60 models. That said, the C20's mopping performance isn't great, and both robot vacuums struggle to maneuver on carpeting and deal with common obstacles. 

Test Results

perceptual testing image
Design
7.0
Design
Build Quality
Vacuum & Mop Combo
Yes

The eufy robot vacuum Omni C20 feels decently well-built. Its chassis uses sturdy-feeling plastic, while other components, like the bumpers, wheels, and buttons, are a mix of rubber and plastic. There's also a metal comb in the brush guard to untangle hair. Unfortunately, the bumpers feel quite cheap and less durable than the rest of the vacuum. As for the finish, most of the chassis is matte plastic, except the sensor and dustbin covers, which use glossy and transparent plastics, respectively.

Accessories like the dustbin, brushroll, and brushroll guard are easy to assemble, and the mop pads attach magnetically. The side brush is the exception; you need to use a screwdriver and attach it to the vacuum's undercarriage with a long screw, which is a bit annoying. Furthermore, if you need to replace the battery, you'll have to disassemble the bottom of the vacuum entirely.

6.0
Design
User Maintenance

The eufy C20 has several components that require periodic cleaning, but they're mostly easy to access and service. Components like the brushroll, brushroll guard, dustbin, and vacuum filter are easy to remove, and cleaning them is simple, too. The "Pro-Detangle" brushroll comb yields mixed results. It works well for removing short hair from the brushroll but struggles to remove longer hair, so you'll still have to periodically check and remove excess hair tangles yourself. The dustbin's self-emptying function essentially takes care of itself, but the dustbin on the vacuum is easy to access and manually empty should you need to. The filter also easily slides out of the vacuum with the assistance of a pull tab. You can release most of the dirt from the filter by tapping it inside a garbage can, but you'll need to rinse it under water for a thorough cleaning once in a while. While removing the side brush requires using a screwdriver, most recurring maintenance is as simple as removing debris with your hands. The one very difficult task is servicing the swivel wheel; you need to use a prying tool or flathead screwdriver to remove it and apply a disproportionate amount of force the first time you remove it.

On the bright side, the dock handles much of the day-to-day maintenance since it houses a bag for the vacuum to auto-empty its dustbin and takes care of washing and drying the vacuum's mopping pads. That said, this dock also has maintenance requirements. You'll need to dispose of its dirtbag, wash out the dirty water tank periodically, and refill its clean water tank. If you schedule mopping tasks often, you'll need to refill the clean water tank frequently as it's quite small.

For more information, FAQs, and how-to videos, see the support page on eufy's website.

4.5
Design
Recurring Cost
Bag Part Number Large Capacity Dust Bags Compatible with Omni C20
Filter Part Number Washable Filter, Compatible with eufy Omni C20
HEPA Filter Part Number No HEPA Filter

This vacuum has high recurring costs as you'll need to replace parts frequently.

  • Brushroll: The brushroll has a service life of 120 hours; a replacement is available on eufy's website.
  • Brush guard: The brush guard wears out after 120 hours of use. See eufy's website for a replacement.
  • Filter: You'll need to replace the filter after 260 hours of use. A two-pack is available on eufy's website.
  • Mop pads: Mop cloths need replacing following 180 service hours. See eufy's website for replacements.
  • Side Brush: You should replace the side brush after 180 hours of use. eufy offers a six-pack on their website.
  • Multi-function dock dust bag: You should replace the dust bag every 60 days or when it's full. A six-pack is available on eufy's website.

eufy also offers a value pack including: 

  • 1 x Brushroll
  • 1 x Brush guard
  • 2 x Filter
  • 2 x Side brushes
  • 2 x Mop pads

Design
Dimensions
Robot Vacuum Height 8.4 cm (3.3")
Robot Vacuum Width 32.3 cm (12.7")
Robot Vacuum Depth 32.4 cm (12.8")
Docking Station Height 44.4 cm (17.5")
Docking Station Width 32.6 cm (12.8")
Docking Station Depth 28.6 cm (11.3")
4.0
Design
Internal Dirt Compartment
Dirt Compartment Capacity
0.18 L
Full Indicator
No

The eufy robot vacuum Omni C20's dirt compartment is tiny, so it must return to the dock frequently during cleaning cycles to self-empty. Depending on the amount of debris in your home, you can use the Clean app to customize the auto-empty frequency to your needs.

6.6
Design
Station Maintenance Capabilities
Auto Empty
Yes
Bagless Station
No
Dirt Compartment Capacity
1.90 L
Automatic Tank Refill
No
Mop Washing
Cold Water
Mop Drying
Cold Air

The multifunction dock can auto-empty the vacuum's dustbin into disposable 3.1L dirtbags. There's also a 2.5L clean water tank for washing and soaking the mopping pads and a 2.4L dirty water tank for wastewater from the mop-washing process. This robot vacuum has no internal water tank; as a result, it has to use the dock's mop-washing and soaking process before leaving it for a mopping task.

Design
In The Box

  • Quick start guide and user manual

For the Multifunction Dock: 

  • Dirty water tank
  • Clean water tank
  • Dust bag lid
  • Detachable mopping pads cleaning tray
  • 1x Disposable dust bag

For the eufy Omni C20: 

  • 2x Mop mounts
  • 2x Mop pads
  • Side brush
  • Brushroll
  • Brushroll cover
  • Dust bin
  • Dust bin filter

9.2
Design
Battery
Minimum Battery Life
75 min
Maximum Battery Life
147 min
Recharge Time
197 min
Removable Batteries
Yes

The eufy robot vacuum Omni C20 interrupts its cleaning cycle and returns to its dock for charging once it has less than 30% battery life. While there are no battery indicators on the vacuum, you can check the battery status using the Clean app. Finally, the battery is replaceable, and eufy offers a How-to guide on their support page.

Design
Quality-Of-Life Features
Power Adjustment
Yes
Easy On/Off
Yes
Surface Type Adjustment
Only Automatic

The eufy robot vacuum Omni C20 allows you to customize many cleaning settings using its app. For example, you can choose from three carpet cleaning modes: Vacuum Only, which restricts the use of the mop; Carpet Avoidance and BoostIQ, which automatically increases suction on carpets. There are also four suction power settings: Quiet, Standard, Turbo, and Max. Finally, for mopping, you can toggle between the dock's Low and High water flow settings and enable Edge-Hugging Mopping, which wiggles the mops for better cleaning along the edges of walls. 

Design
Brushroll And Tools
Brushroll Setup
Single
Brushroll Type
Rubber And Bristles
Side Brush Setup
Single
Side Brush Type
Fixed
Performance
8.0
Performance
Hard Floor Pick-Up

Using the Standard suction mode, the eufy robot vacuum Omni C20 delivers great performance on hard surfaces. It can handle most debris, regardless of size, in a single cleaning cycle. It also performs better than many circular robot vacuums along walls, as it tends to spin in place to position itself; this behavior doesn't help in corners, though.

6.5
Performance
High-Pile Carpet Pick-Up

This vacuum's high-pile carpet performance is adequate while using its Standard suction mode and enabling the BoostIQ carpet cleaning setting. It effectively deals with most medium and large debris, like rice or cereal, in a single cleaning cycle. However, fine debris like sand proves challenging as the brushroll fails to adequately agitate the carpet fibers to lift it out, particularly along walls and in corners. The vacuum's side brushes also scatter a bit bulkier debris around instead of directing it towards its brushroll.

Unfortunately, like with the eufy L60, this vacuum's cliff sensors kept triggering on the black carpet we use for testing. We had to cover the cliff sensors with paper and tape for the vacuum to work. While this may not impact most people, it's important to note for anyone with dark carpet or flooring.

6.5
Performance
Low-Pile Carpet Pick-Up

The eufy Omni C20 does a reasonable job clearing debris from low-pile carpet using its Standard suction mode and BoostIQ setting. While large debris like cereal is no problem, fine and medium debris, such as sand and rice, are more challenging to clear, particularly along walls and corners. Its side brush also tends to toss some larger debris around.

6.0
Performance
Pet Hair Pick-Up

The eufy robot vacuum Omni C20 delivers acceptable pet hair pickup performance on low-pile carpeting. Using the Standard suction mode and BoostIQ setting, it can clear hair lying on top of carpeting but can't agitate the carpet enough to release strands deep in the fibers. It also tends to drag some hair around; you'll need to run several cleaning cycles if your pets shed heavily.

3.4
Performance
Suction
Maximum Head Suction
0.0 inH₂O (0.01 kPa)
Normal Head Suction
0.0 inH₂O (0.01 kPa)
Setting Used For Normal "Standard" (App)

Like most robot vacuums, the eufy C20 has poor suction performance at its floorhead. The suction inlet is too high above the ground to generate a tight seal on bare surfaces.

7.1
Performance
Airflow
Maximum Head Airflow
10.3 CFM (0.3 m³/min)

The eufy C20 has okay airflow performance for a robot vacuum. It'll have a harder time lifting bulkier debris. 

8.1
Performance
Noise
Bare Floor
59.3 dBA
Low-Pile Carpet
59.6 dBA

The eufy C20 is very quiet, even when using its most powerful suction mode, so you don't need to worry about it running in the background while you're having a conversation or on a work call. However, the multifunction dock is noisier than the vacuum when using the self-empty function, reaching 73.2 dBA.

7.0
Performance
Maneuverability

The eufy C20 can maneuver itself without too much difficulty. Unlike models with a spinning LIDAR sensor, this robot vacuum uses a static laser to map its environment. The main difference is that the vacuum has to stop moving and spin around to position itself. While this adds some initial time to the mapping and cleaning process, the use of a front-mounted static laser results in a lower profile that's better suited to traveling and cleaning under low furniture. Also, this vacuum lacks object avoidance systems; it tends to get stuck on rugs and tassels, has difficulty getting onto taller carpeting, and pushes around objects like electrical cords until it eventually gets tangled up.

Performance
Air Quality
Anti-Allergy Filter (HEPA)
No

This vacuum does a poor job of sealing in fine particles, as they can escape through the vacuum's exhaust.

5.0
Performance
Cracks
Wood Cracks Post Test

This vacuum performs poorly when cleaning cracks and crevices. It only clears surface-level dust, leaving most debris caught deeper in cracks. Using the Max suction mode does little to improve the performance and actually produces a bigger mess, spreading debris around the floor.

5.0
Performance
Stains
Stain Pickup Post Test

This vacuum's stain-clearing performance is poor, with the water flow mode set to High, the pathing mode set to Normal, and the Edge-Hugging function left on, which is supposed to let the vacuum clean closer to walls. Despite pre-soaking the mop pads before running its cleaning job, this vacuum had only a minor impact on the dried-on stain, to the point where it would require at least a few more mopping cycles to clear it away fully.

Note: The vacuum won't begin a mopping task unless it departs directly from the dock. This is because it lacks an onboard water tank and needs to pre-wash and soak its mop pads. As a result, we had to reconfigure our test environment to accommodate the dock; we ensured the test area provided a comparable surface to our usual test environment.

0
Performance
Water
Wet Compatible
No
Water Pickup Post Test

This vacuum isn't designed to deal with standing water or liquid spills, even with its mopping pads attached, as it can suck up liquid and damage the motor.

Automation
8.9
Automation
Physical Automation
Recharge And Resume
Yes
Pathing Algorithm
Smart
Physical Boundary Markers
No
Scheduled Start Buttons
No
Cycle Control Buttons
On-Board Only
Navigation Control Buttons
Return To Base Only

The eufy Omni C20's multifunction dock eliminates much of the day-to-day maintenance requirements that come with a robot vacuum, as it empties its dustbin and washes and dries its mopping pads. These tasks are set to an automatic schedule by default, but users can adjust these settings using the Clean app.

There are two physical control buttons you can use to perform basic functions without having to use the app. A short press of the Power button starts or pauses a cleaning cycle, while holding the button turns the robot vacuum on and off. Pressing the Recharge button while the vacuum is cleaning sends it back to its base station; pressing and holding this button toggles the child safety lock. Finally, pressing and holding both buttons resets the Wi-Fi.

9.0
Automation
Companion App Automation
App Name
eufy Clean
Software Boundary Markers (No-Go Zones)
Yes
App Scheduled Start
Yes
App Cycle Control
Yes
Navigation Control Within App
Yes

The eufy Clean app offers a wide range of customization options within an intuitive interface. Unlike previous versions of the app, the user experience is great; there are no connectivity issues, and there's no lag in registering user inputs.

As for the features, there are two modes for mapping your home. Quick Mapping, which eufy recommends, creates a complete map of your home before the first cleaning cycle. In contrast, Clean & Mapping initiates a cleaning cycle and generates a map upon completion. Once the vacuum generates a map, 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. A few controls are available for the multifunction dock, such as setting the auto-empty frequency and fine-tuning the wash and dry cycles for the mop. The app provides a comprehensive overview of vacuum maintenance procedures.

Unfortunately, like with the eufy S1 Pro, the app continuously asks permission to access screenshots whenever you take one with your Android mobile device; this behavior isn't present in the iOS version of the app.