Robot Vacuum Cleaner – How to Choose

Robot Vacuum Cleaner – How to Choose

In this guide we explain how to choose the best vacuum cleaner robot.

If you intend to buy a quality robot, you will have to learn how to move among the many products currently on the market. You will need a good guide, and above all you will need to know those elements that are decisive for the choice of your small robot vacuum cleaner. And that’s why today we will show you every useful detail to discover this world made of intelligent vacuum cleaners, which can reserve many surprises.

Robot Vacuum Cleaner Battery

First of all, one of the most important factors must be analyzed, namely the battery of the vacuum cleaner robot. A household appliance of this type must in fact have an adequate autonomy for the surface you want to clean. Consequently, we are talking about both areas of use and performance, because the battery life will also depend on the robot’s ability to clean a floor in depth. If you want to ensure an intelligent vacuum cleaner of high level, you will have to analyze three aspects related to the battery, they are its autonomy, charging time and finally the type. If you want more specific information about how to choose robot vacuum cleaner, watch here:

Battery autonomy

Autonomy becomes a problem when you buy a vacuum cleaner robot that can’t go beyond cleaning a single room. If your desire is to buy a device capable of cleaning the entire house, then battery life must become your first concern. The suggestion is to choose a model that can last at least an hour, if you need to clean an area around 50 square meters. If instead you need a coverage of at least 100 square meters, you will not be able to avoid buying a vacuum cleaner robot with a battery life of at least two hours.

From this you can also imagine that the choice depends on your specific needs, and also on the budget at your disposal, because the longer the battery lasts the higher the price rises. Finally, also consider whether to buy a model capable of returning to the charging base on its own, when it senses that the battery is running low. This technology is recommended to avoid leaving work halfway through, and finding the discharged robot around the house.

Battery type

Generally in advanced models the autonomy and recharge times are always specified in the package, but this is not always the case. Fortunately, knowing the type of battery mounted on the robot, it is possible to get an idea of the times. In this sense, models with a lithium-ion battery are always preferable, as well as weighing less, do not suffer from the memory effect and recharging takes place in much shorter times. The second type of battery is the classic nickel metal hydride, and are not recommended because of the memory effect and charging times really very long. On the other hand, they tend to last longer and obviously cost less.

Recharge times

If you choose a model with an older generation battery, it may take up to four hours to recharge. It turns out to be a serious problem, especially when your robot is not able to clean the whole house in a single session. On the contrary, a type of robot with a lithium battery generally takes about 60 minutes to fully recharge. If it is then equipped with the automatic return to the base, it will be able to manage the cleaning in total autonomy, doing back and forth throughout the day.

Robot vacuum cleaner tank

Directly connected to the performance of the intelligent robot we find the tank, a fundamental component for this small household appliance. The type of tank and its capacity, in fact, can make a vacuum cleaner robot more or less versatile and effective. If the tanks are small and difficult to empty, it is obvious that this device will require more maintenance and therefore more time loss.

Tank capacity

Never forget to consider an important aspect such as the tank capacity, because this will affect the autonomy of a robot of this type. If the container fills up quickly, the robot will have to be cleaned many times, so it will not be able to continue with the cleaning operations before you have not done it. On average, the capacity of a dust container corresponds to about 500 milliliters, but on the market you can easily find larger tanks. In any case, we suggest you to avoid the small ones, around 200 millilitres, because they will actually limit the independence of your small automatic vacuum cleaner. A capacity of 500 milliliters should be enough, especially if you intend to cover a small medium house for two or three cleaning cycles, or a large house for a complete cycle.

Filtration system

Every robot vacuum cleaner on the market is equipped with a filtration system, useful to block the particles during the passage of air. Of course we are talking about filters that cannot be compared to those of common vacuum cleaners, for obvious reasons of space available on your device. On the other hand, some HEPA filters are able to block even allergens, and in some cases there are devices that mount two or three of them.

Tank maintenance

As mentioned above, a tank, in addition to having a suitable capacity, should also be easy to dismantle and empty. Usually there is a snap button that allows the extraction of the above, while for emptying just open the lid. In any case, it is rare to find on the market robots with a tank that is difficult to disassemble and clean. Secondly, it is important that it is also easy to wash under running water, because proper maintenance always requires it.

Structure of vacuum cleaner robots

The structure is also an element that you will have to study carefully, and it contains a series of elements to analyze. Meanwhile we talk about its morphology, because the device must be designed to suck dust well even from the corners. Secondly, the size of the robot vacuum cleaner is very important, another aspect that we will analyze below.


There is no better choice in terms of size, because this factor is always related to the power and capabilities of your smart vacuum cleaner. The fact is that a very high-performance robot will also be larger than the others, especially when it comes to height. In this case we advise you to evaluate if the device can pass under the lowest cabinet, measuring the height from the ground of this one. Usually, however, a robot vacuum cleaner does not exceed 10 centimeters in height.


When we talk about morphology, we refer to the shape of the robot body, which is usually circular. This shape is ideal in terms of agility during steering and movement, but is less performing when it comes to removing dust from the corners of the house. On the contrary, square vacuum cleaner robots are more skillful in this phase, but they are also less agile and snappy than the others. The problem can be solved by purchasing a circular device with rotating brushes, which are good for better dust capture.


The discussion on the type of brushes also touches on the topic of versatility, which is important when it comes to choosing a robotic vacuum cleaner. Not all brushes, in fact, are able to clean surfaces such as carpets or parquet in the appropriate way. Also the agility factor counts a lot, because some devices, usually the cheap ones, bump against the edge of the carpet and can’t get on it. In this sense, the presence of special sensors and the quality of the wheels is very important.

Functionality of vacuum cleaner robots

The set of functions of a vacuum cleaner robot is equally decisive, because it expands its effectiveness and versatility. In this sense, it is important to evaluate the presence of some more or less advanced features, such as the following
Programmed start-up, the robot can be programmed to start at a certain time on a certain day.

Mode of operation, some robots allow you to customize the movements made when cleaning house.
Obstacle avoidance, robots may be able to get around obstacles better, but this depends on the quality of the appropriate sensor.

Automatic return, when present, the robot returns alone to the charging base if the battery is about to discharge.
Space mapping, high-end robots map the surface and are able to save it in their memory.

Surface washing, very few robots are also able to wash floors, in this case we are talking about vacuum cleaner robots.

IoT function, Internet of Things, some robots can be programmed and managed remotely via a smartphone application.

It closes with a specification on the sensors, since a model could mount several of them. We are not only talking about the one for the detection of obstacles, but also the anti-fall, anti-tip and the sensor to get around the carpets.

Vacuum Cleaner Robot Accessories

The last factor to be analyzed is the accessories supplied with the robotic vacuum cleaner, which may vary according to the cost of the device. Meanwhile, almost all models include a charging base, while others have a remote control to manage them remotely.

Other models also include virtual walls, which are barriers that serve to prevent the vacuum cleaner robot from crossing certain boundaries. They are useful to keep them away from stairs or certain rooms in the house, for example.

It should be noted that other models, the most expensive, also include a series of different brushes, designed for cleaning specific surfaces. These are therefore able to optimize the passage on parquet, but also on carpets or rugs. Finally, some packages also include spare brushes for the intelligent vacuum cleaner.

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