Best robot vacuum cleaners of September 2021: ranking and price comparison

Quietest
Robot vacuum cleaners (1 - 5)
Samsung NaviBot Smart TangoRoborock S6 PureiLife A10Ecovacs Deebot Ozmo N8 Pro PlusSamsung NaviBot SilencioRoborock S5 MaxNeato D8Proscenic M7 ProEcovacs Deebot Ozmo 937Yujin Robot iClebo Arte
Image
Samsung NaviBot Smart Tango
Roborock S6 Pure
iLife A10
Ecovacs Deebot Ozmo N8 Pro Plus
Samsung NaviBot Silencio
Roborock S5 Max
Neato D8
Proscenic M7 Pro
Ecovacs Deebot Ozmo 937
Yujin Robot iClebo Arte
Best price
Best price
Summary
Summary
  • General info (56)
  • Design (77)
  • Cleaning power (77)
  • Power (37)
  • Features (64)
  • General info (79)
  • Design (59)
  • Cleaning power (52)
  • Power (62)
  • Features (100)
  • General info (77)
  • Design (80)
  • Cleaning power (52)
  • Power (31)
  • Features (93)
  • General info (54)
  • Design (97)
  • Cleaning power (71)
  • Power (60)
  • Features (100)
  • General info (48)
  • Design (80)
  • Cleaning power (60)
  • Power (59)
  • Features (57)
  • General info (77)
  • Design (80)
  • Cleaning power (52)
  • Power (68)
  • Features (86)
  • General info (91)
  • Design (69)
  • Cleaning power (50)
  • Power (35)
  • Features (86)
  • General info (74)
  • Design (80)
  • Cleaning power (52)
  • Power (62)
  • Features (93)
  • General info (64)
  • Design (78)
  • Cleaning power (71)
  • Power (58)
  • Features (93)
  • General info (34)
  • Design (61)
  • Cleaning power (54)
  • Power (64)
  • Features (50)
General info
Audible noiseAudible noise is the noise that a device produces while in operation. Reduced audible noise improves quality.
Audible noiseAudible noise is the noise that a device produces while in operation. Reduced audible noise improves quality.48dB
60dB
65dB
N.A.62dB
58dB
70dB
72dB
N.A.55dB
Amazon AlexaIt is compatible with Amazon’s Alexa voice assistant, allowing you to use voice commands to control the device from other Alexa-compatible devices.
Amazon AlexaIt is compatible with Amazon’s Alexa voice assistant, allowing you to use voice commands to control the device from other Alexa-compatible devices.
Google AssistantIt is compatible with Google Assistant, allowing you to use voice commands to control the device from other Google Assistant-compatible devices.
Google AssistantIt is compatible with Google Assistant, allowing you to use voice commands to control the device from other Google Assistant-compatible devices.
HEPA filterHigh-Efficiency Particulate Air is a standard of air filter. By this standard an air filter must remove 99.97% of all particles greater than 0.3 micrometre from the air that passes through.
HEPA filterHigh-Efficiency Particulate Air is a standard of air filter. By this standard an air filter must remove 99.97% of all particles greater than 0.3 micrometre from the air that passes through.
Warranty periodWhen covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.
Warranty periodWhen covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.2
1
1
1
2
1
1
1
1
1
Total score for "General info"
Total score for "General info"
Design
Automatic height adjustmentDevice automatically adjusts its height to clean all flooring types easily and efficiently.
Automatic height adjustmentDevice automatically adjusts its height to clean all flooring types easily and efficiently.
BaglessThere is no need to buy bags.
BaglessThere is no need to buy bags.
Dustbin capacityThe device can work longer without needing to be emptied.
Dustbin capacityThe device can work longer without needing to be emptied.0.3l
0.46l
0.6l
0.42l
0.6l
0.6l
0.7l
0.6l
0.47l
0.6l
Twin side brushesThe device has two side brushes which are used for cleaning in corners. This is better than the standard brush design.
Twin side brushesThe device has two side brushes which are used for cleaning in corners. This is better than the standard brush design.
Washable filters includedHaving washable filters reduces the costs associated with using the device.
Washable filters includedHaving washable filters reduces the costs associated with using the device.
Total score for "Design"
Total score for "Design"
Cleaning power
Suitable for all floor typesThe device is designed to adjust to all types of flooring and all sorts of everyday environments.
Suitable for all floor typesThe device is designed to adjust to all types of flooring and all sorts of everyday environments.
Cleaning modesThe device offers a wider range of different cleaning options.
Cleaning modesThe device offers a wider range of different cleaning options.4
4
4
3
5
4
3
4
3
4
Cleaning speedFaster devices save you time and therefore are more convenient.
Cleaning speedFaster devices save you time and therefore are more convenient.0.32m/s
N.A.N.A.N.A.0.3m/s
N.A.N.A.N.A.N.A.0.25m/s
Dirt sensorIt senses dirtier areas and ensures enough time is spent on them so that they get thoroughly cleaned.
Dirt sensorIt senses dirtier areas and ensures enough time is spent on them so that they get thoroughly cleaned.
Mopping functionThe device can mop a floor.
Mopping functionThe device can mop a floor.
Total score for "Cleaning power"
Total score for "Cleaning power"
Power
Auto-off functionThis feature conserves power when unit is not in use or recharging. It also shuts the machine down if it inadvertently gets trapped in a confined space.
Auto-off functionThis feature conserves power when unit is not in use or recharging. It also shuts the machine down if it inadvertently gets trapped in a confined space.
Battery powerBattery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
Battery powerBattery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.N.A.5200mAh
2900mAh
3200mAh
2000mAh
5200mAh
2100mAh
5200mAh
3200mAh
2200mAh
Charge timeThe time it takes to fully charge the battery.
Charge timeThe time it takes to fully charge the battery.3h
5h
6h
4h
2h
5h
3h
5h
N.A.1.6h
Operating power consumptionHow much power the device consumes when it's switched on.
Operating power consumptionHow much power the device consumes when it's switched on.40W
58W
N.A.N.A.40W
N.A.N.A.50W
N.A.12W
RuntimeThe device works longer without being charged.
RuntimeThe device works longer without being charged.100min
180min
140min
110min
90min
150min
100min
150min
110min
160min
Total score for "Power"
Total score for "Power"
Features
Anti-stuck systemThe device has a design which allows it to move without getting stuck on power cords and other stray objects.
Anti-stuck systemThe device has a design which allows it to move without getting stuck on power cords and other stray objects.
MappingThe vacuum can map your interior. This can then be viewed on the app and can enable other features such as selecting a specific room for cleaning.
MappingThe vacuum can map your interior. This can then be viewed on the app and can enable other features such as selecting a specific room for cleaning.
No-go zonesUsing the map feature in the app, you can mark out specific areas of your home for the vacuum to avoid during its cleaning routine.
No-go zonesUsing the map feature in the app, you can mark out specific areas of your home for the vacuum to avoid during its cleaning routine.
Virtual barrierThis feature allows you to mark off areas of the home that you want the vacuum to avoid. It is usually achieved with an infra-red accessory or a special tape.
Virtual barrierThis feature allows you to mark off areas of the home that you want the vacuum to avoid. It is usually achieved with an infra-red accessory or a special tape.
Voice promptsWith voice prompts, you will automatically receive information via audio messages – for instance, you may find out that the battery is running low, and it's time to recharge the device.
Voice promptsWith voice prompts, you will automatically receive information via audio messages – for instance, you may find out that the battery is running low, and it's time to recharge the device.
Total score for "Features"
Total score for "Features"

How to choose the best robotic vacuum cleaner

Robotic vacuum cleaners or robovacs are autonomous vacuum cleaners that first appeared on the market in the late 90s. Robotic vacuums have a cleaning system that operates on the basis of intelligent programming. Most of these types of vacuum cleaners aren't just robotic vacuum cleaners, as they also come with other cleaning capacities, such as mopping and UV sterilization.

The first robotic vacuum cleaner to appear on the market was Trilobite produced by Electrolux in the 90s. Roomba is another popular example of a robovac launched by iRobot in 2002, and it's one that's continued to rank as one of the best robotic vacuum cleaners on the market (the new iRobot Roomba S9 Plus features all of the top features most consumers want in the 2020s, such as a virtual barrier and voice prompts).

How do robotic vacuum cleaners work? They're equipped with ultrasonic sensors for detecting dirt, pet hair, and other debris found on floors. This means that they provide efficient cleaning by collecting tough dirt pieces in a time-saving manner with the help of rotating and edge brushes. Aside from simply cleaning your floors, however, here's what features to look for in the best robotic vacuum cleaners on the market.

Size and dustbin capacity

Most robotic vacuum cleaners are about the same size in diameter as a car's steering wheel. Smaller vacuum cleaners, like the Dyson 360 Eye, which has a diameter of only 9.5", are useful to thoroughly clean small and tight spaces (and are particularly great for those who live in smaller houses or apartments and don't want to deal with the noise of a larger robotic vacuum).

However, it's worth noting that larger robotic vacuums come with a larger dustbin, meaning that you don't have to empty it as often. The iRobot Roomba 572 Pet Series has a diameter of 14",  but the Ecovacs Deebot D76 wins when it comes to dustbin capacity. At a whopping 1.4 liters, it's by far one of the largest in 2021.

The average dustbin capacity of a robotic vacuum cleaner is 0.49 liters, just to provide you with some frame of reference. If you have a spacious home, you'll want to pay special attention to the dustbin capacity versus any other features as a larger dustbin will mean less work for you overall.

Filtration system

In today's day and age, it's crucial that you take a look at any vacuum cleaner's filtration system in order to ensure it's safe for your home. If indoor air quality is important to you, be sure to check that the robotic vacuum cleaner comes with a HEPA Filter (or High-Efficiency Particulate Air Filter) which can remove 99.97% of air particles that are greater than 0.3 micrometers in size.

You will, of course, need to clean the filters; but all you need to do is tap on the side when you're cleaning out the dustbin. High-end robotic vacuum cleaners are often equipped with double air filters to ensure that the dust particles don’t fall out and create a mess on the floor when the vacuum moves around your home.

Power and cleaning efficiency

Autonomous robotic vacuum cleaners are powered with the latest technology, offering a cleaning system that's smart, efficient, and reliable. Turbo Fan Motor, HEPA Filter, Ultrasound Sensors, Powerful Suction created by Rotating and Edge Brush & Different Cleaning Modes are technologically rich elements used in robot vacuum cleaners to enable efficient cleaning of your carpeted and hard-surface floors. 

Let's break those features down one-by-one.

Turbo fan motor

If a robotic vacuum cleaner has this feature listed, it means that there's a turbo fan motor attached to the system to help create more airflow. These types of robotic vacuum cleaners tend to run at at least 14,000 RPM, which helps accelerate multiple aspects of vacuuming like sweeping, mopping, and suction in the most efficient and speedy way.

HEPA filter

A HEPA filter helps catch fine dust particles effectively. The best part about a vacuum cleaner with a HEPA filter is that you can wash it numerous times to ensure clean exhaust air every time you use the device.

Rotating brush

A rotating brush consists of a rake brush and soft brush intertwined together in the middle of the vacuum cleaner to pick up the dirt swept up by side brushes. Really, it works to help ensure that your floors look clean and polished.

Edge brush

The function of the edge brush is to sweep the dirt from sideways to the front of the device so that the rotating brush in the middle can pick them up.

Suction power

If a robotic vacuum cleaner comes with higher suction power, it means that it likely features a unique brush roll design enabling it to pick up pet hair, dust, dirt or any debris on your floor. For tight corners and edges, dual spinning edge brushes help to remove dirt from those challenging areas ensuring excellent coverage of your room.

Ultrasound sensors

Most robotic vacuums possess a unique obstacle avoidance system where the ultrasound sensors help to move around your room by avoiding any kind of obstacles that might appear on the way. This can be referred to as an obstacle sensor or, in some cases, it might have a virtual barrier that helps to prevent the device from entering a particular area.

Cleaning modes

Robotic vacuum cleaners are popular for the different cleaning modes they offer (something that you can't program most regular vacuum cleaners to do). You can expect most of these types of vacuums to offer at least about three different cleaning modes, all of which offer different features depending on the condition of the space you want to clean:

i. Automatic Mode – Just as it sounds, when using this mode, the vacuum cleaner will automatically clean your entire floor.

ii. By-the-Wall Mode – When programming this mode, you're telling the vacuum to clean the area alongside the walls of your room where dirt is often collected.

iii. Spot Mode – If you have a hard-to-clean spot on your floor that needs some extra attention, use this mode. It'll clean an area around 1m in diameter. Some robotic vacuum cleaners can clean areas of up to 4m in diameter with this cleaning mode.

iv. Bigger Spot Mode – This is the same as Spot Mode, except for the spot size, which can be up to 2-4m in diameter.

v. Plasmacluster Shower Mode - When using this mode, the vacuum cleaner will release plasmacluster ions at a stationary mode; these ions help purify the air.

Independent, efficient, and quick cleaning

Perhaps the biggest advantage of robotic vacuum cleaners vs. regular vacuum cleaners is their capability to clean floors independently without you having to be at home to start or stop the system.

The vacuuming speed, which is about 0.27 m/s on average, saves you time, and the scheduling features in most vacuums allow you to schedule the device to clean when you're not home.

Furthermore, the ease of a self-charging docking system means that, if the robotic vacuum cleaner has a self-charging docking system, it'll "know" to go back to the docking station after cleaning to recharge without you having to even think about charging it.

Battery

Robotic vacuum cleaners operate via onboard rechargeable batteries. Different vacuums have batteries with different lifespans and capacities depending on their sizes. The average capacity of a battery for a robotic vacuum cleaner is currently 2300 mAh. And, on average, robotic cleaners take just over three hours for a full recharge.

Noise level

While they've come a long way since their debut in the 1990s, robotic vacuum cleaners can unfortunately still be quite loud at times. For some people, purchasing a robotic vacuum cleaner means that they don't have to do the cleaning themselves but also that they can enjoy a bit more peace and quiet in their day. If you're one of those types of people, you'll absolutely want to check out the audible noise level.

We've ranked the quietest robotic vacuum cleaners for you so that you're able to choose the absolute quietest if that's an important feature to you. Currently, the quietest is the Samsung NaviBot Smart Tango, which only has an audible noise level of 48db; the average is about 63db. To provide you with some reference, around 58dB is the noise level of a normal, casual conversation.

Cleaning speed

If your biggest issue with traditional vacuum cleaners is that it takes too much time to clean your house then you'll want to be sure that you're looking at the cleaning speed of a robotic vacuum cleaner when comparing them to find the best one for you. The cleaning speed of these types of vacuum cleaners is measured in m/s, with the average cleaning speed being between about 0.25-0.30m/s.

The fastest robotic vacuum cleaner currently on the market only reaches about 0.35m/s, and it's the Xiamen ShengQi SQ-A325. Keep in mind that just because one is faster doesn't mean it's providing you with a deeper clean. For that, you'll need to take a look at other features, such as the filters, brushes, and cleaning modes.

Accessories

Robotic vacuum cleaners are often accompanied by accessories like a remote control or a smartphone app that allows you to control the system with ease and convenience.

Remote Control: In this sense, a remote control helps make it easier for you to adjust the settings before you actually start the cleaning process. If you want, you can also alter the settings while the device is busy vacuuming.

Smartphone app: Smartphone apps for robotic vacuum cleaners are becoming more and more popular as they allow you to control the system manually with just a couple of taps on your phone. Some robotic vacuum cleaners like Botvac can be controlled through both Apple and Android smartphones once you have the app installed and you're connected to Wi-Fi.

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