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8 Best Rated Robotic Window Cleaners for Shining Windows

T he times when you had to spend hours on a ladder or a chair, trying to find the right pose to cover all your window surfaces while maintaining your balance are soon to be gone, as more and more advanced robots are developed today to handle this job. The newest robotic window cleaners use AI technology and cutting-edge navigation systems to deliver spotless windows and come with strong safety features that ensure they don’t fall and break even if a power failure occurs.

In the comparison table below, you will find a selection and ranking of the most dependable models of the moment, followed by a series of in-depth reviews, covering complete specifications, advantages, and disadvantages, so you can compare products and decide on a favorite one.

Are Robotic Window Cleaners Worth It?

Automated window cleaners are just a step in the automation process that starts happening in any house. From vacuum cleaners that use advanced navigation systems to map the house and clean it more efficiently to smart security systems and even robotic pets designed to keep us company, everything is getting us closer to spending our time more meaningfully and leaving the chores to the hand of the robots.

Analyzing this trend for The Guardian, finance expert Emma Lunn even talks about saving money in the long run, as home automation means cleaning only when it needs to be cleaned, keeping the lights on only when it is dark inside, and running the furnace only when the temperature drops under a comfortable value. A window cleaner can repay you with more free time, but it offers other benefits as well:

  • Your windows and other glass surfaces will look impeccably
  • Clean windows mean brighter rooms and a better mood
  • Lower chances of coming up with allergies – windows tend to gather a lot of dust and allergens
  • Studies have shown that windows that are cleaned more often last longer

See our selection of robot vacuums for hardwood floors and discover a simple way to keep your beautiful floors clean and well-cared, all automatic and with reasonable energy costs.

Top 8 Robotic Window Cleaners Comparison

Photo Product Compatibility Glass Thickness Cleaning Speed Cleaning Accessories Cleaning Modes Anti-falling Sensors Warranty Price

Best Overall
1. Hobot 298 Frameless windows and windows with rectangular frame 3 mm or more 2.4 min/m2 Microfiber cloth 3 Automated operating modes + 1 manual mode 1-year Check Price at Amazon

Editor’s Choice
2. GlassTec Window Cleaning Robot WZJJRTM Framed and frameless windows 3 mm or more 8.2-8.5 cm/s Rolling brush, vacuum nozzle 2 Automated operating modes 1-year; 60-day money back Check Price at Amazon

Best for Glass Doors
3. ECOVACS Winbot W730R Framed and frameless windows Unlimited N/A 2 cleaning pads and 1 squeegee 3 Operating modes 1-year Check Price at Amazon

Best for the Money
4. Mamibot W120 Frame and frameless glass, tables, and smooth floors or wall surfaces Unlimited 2 min/m2 2 Microfiber cloths Wet and dry cleaning 5-year for the product; 1-year for the battery Check Price at Amazon
5. Prainskel Window Cleaner Robot Frame and frameless glass, glass doors and floor windows 3 mm or more 3 min/m2 6 Microfiber cloths 1 Automated mode + 1 manual mode 3-year

Best for Multiple Surfaces
6. Sophinique X5 All types of glass, flat wall, table, floor, ceiling, window and hard-to-reach places 3 mm or more 4 min/m2 Microfiber cloth 4 Automated operating modes 1-year Check Price at Amazon
7. Gladwell Gecko Tables, high windows, ceilings 3 mm or more 4 min/m2 Microfiber pads 3 Auto modes + 1 manual mode 1-year Check Price at Amazon
8. AlfaBot X7 Tables, high windows, tiles, floors 3 mm or more 4 min/m2 Microfiber pads 3 Auto modes + 1 manual mode 1-year Check Price at Amazon

Simplify floor cleaning by combining two operations in one. Check out our robot vacuum and mop combo reviews for efficient automatic solutions.

1. Hobot 298

Check Price at Amazon


  • Compatibility: Frameless windows and windows with rectangular frame
  • Cleaning Speed: 2.4 min/m2
  • Cleaning Modes: 3 Automated operating modes + 1 manual mode
  • Cord Length: 13 feet
  • Backup Battery Type: Lithium Polymer
  • Backup Battery Life: 20 min.
  • Cleaning Patterns: Zigzag path in both horizontal and vertical directions
  • Safety Features: High-strength 150KGF safety rope
  • Power Consumption: 72W
  • Remote Control: Remote & Bluetooth App
  • Dimensions: 9.45 x 9.45 x 3.94 inches
  • Warranty: 1-year

When talking about robots specially created to handle large windows, there’s one model that tops all the others. Driven by artificial intelligence technology and provided with the ultimate functions in what concerns both performance and durability, the 298 is among customers’ favorites, and there’s no wonder here. The strong suction power, along with a cutting-edge anti-falling control algorithm, allows it to cross both frame and frameless windows, as it can detect them and reroute, thus avoiding falling.

Advanced Ultrasonic Water Spray Technology

The main concern when it comes to these types of devices is that they may get stuck or clogged when encountering debris and dirt on the surfaces. While this model isn’t perfect, and the manufacturer does suggest that you should remove some of the dirt manually if your windows are particularly dirty, it is undoubtedly more efficient. The secret is the bio-mimicry technology that allows it to pulverize water in incredibly small particles with sizes of about 15 micrometers, thus creating a mist that has the purpose to soften the dirt and allow the machine to remove it with ease.

The water tank is quite generous and allows for complete cleaning of large surfaces. Furthermore, if the nozzle ever gets clogged, you won’t need to spend time trying to make it functional again, as you can just replace it along with the entire water tank module.

The washing operation is followed by a drying operation, which is performed by a microfiber cloth. The unit follows a zigzag pattern and moves both vertically and horizontally, covering a square meter in about 2.4 minutes. At the end of the process, the windows are clean, dry, and shiny as they had undergone professional cleaning.

Cleaning carpets may be the most demanding job when it comes to everyday home cleaning. Discover the best robot vacuums for carpets of the moment and let them take over the scrubbing and vacuuming. The results are better than you would expect.

Dependable UPS System

The unit maintains its position on the window even if it encounters minor obstacles, and this is possible due to the clever design, which comprises an auto-adjustable pneumatic pad. The pad ensures that the force between the threads and the cloth stays constant, thus preventing the machine from slipping off the window.

It needs to be connected to an electrical outlet and is equipped with a long 13 feet cord that allows it to reach far corners. Nonetheless, if something happens and the power is off, it has a trustworthy UPS system and is covered by a lithium polymer backup battery, which keeps it from falling for up to 20 minutes. During this period, an alarm will sound to let you know that you need to remove your device. Even if you don’t manage to get there on time and the unit falls, the chances of it getting broken are low, as it is secured by a 150KGF safety rope. In case you encounter any manufacturing flaw, you can use the 1-year service contract to get it solved.

Smart Features through the Dedicated App

Convenience hasn’t been left behind, and this model comes both with a remote control and the possibility to connect it to a smartphone through Bluetooth. The company has developed a dedicated app, which will help you select one of the three automated operating modes or even switch on a manual mode. Moreover, the unit can use the app to send you notifications and let you know when the cleaning is ready.

Performance Results – What Do Testers Say?

Hobot 298 may be the only robot that does all the company says it can do. We decided to test it on our tall office windows, which can be a total pain to clean (we don’t do it very often, but we weren’t aware of how dirty they can get until we looked at the cleaning pads on the robot). What we liked the most was that we were able to add a cleaning solution from the beginning and not interrupt the machine to spray it on the pads.

We plugged it in, turned it on, and placed it on the window where it immediately stick. Then, we selected one of the automated modes on the remote and let it do the job. As soon as it detected the glass surface, it started moving by following the selected pattern. It seemed that it was just gliding, and we could see the windows becoming cleaner behind it. The sensors worked just as described. When Hobot 298 approached the frame, we could see it turning around without bumping into it. Nevertheless, it still did a good job on cleaning the corners and the edges. We also drove it a bit with the remote, mostly for fun, as there weren’t truly any spots left uncovered.

Lastly, we wanted to see how well the protection system worked, so we unplugged it, leaving it to the battery to sustain its position for the promised 20 minutes. Well, the alarm is loud. So loud that the whole office heard it, so it is impossible to miss the signal if the power is off. We bore through it until the robot ran out of battery and fell. Luckily, the rope was buckled on and kept it from smashing on the floor.

We did change the pads twice as it proved that we had really dirty windows, but we don’t expect this to happen again the next time we put Hobot to work. Overall, it is a great machine that really works, and this is the most important aspect. Plus, it is a lot quieter than most of the products we have tested.

Linda Tauson, Technical Writer and Product Tester


  • Large cord allows it to reach high corners and cover larger surfaces
  • UPS system locks it in place in case of a power outage, and the strong safety cord provides extra protection
  • Can be operated remotely with the help of the provided remote or through the dedicated app
  • Mist spraying system ensures excellent cleaning that excludes water stains
  • An advanced algorithm ensures that it doesn’t fall, even on frameless surfaces


  • If the windows are too dirty, they need to be cleaned manually before using the robot
  • Not compatible with rounded frames


Fast and cost-effective, with a power consumption of only 72 watts, it is the right pick if you need to cover large glass surfaces. The intelligent technology behind it, along with the trustworthy design and safety features, makes it a long-term home help, while the Bluetooth connectivity opens the path for more convenient use.

Want to find out more about automatic technology that can make your life easier? Read our article about the advantages and disadvantages of smart homes and see what the odds say about the future of home automation.

2. GlassTec Window Cleaning Robot WZJJRTM

Check Price at Amazon


  • Compatibility: Framed and frameless windows
  • Cleaning Speed: 8.2-8.5 cm/s
  • Cleaning Modes:
  • Cord Length: 2 Automated operating modes
  • Backup Battery Type: Lithium ion
  • Backup Battery Life: N/A
  • Cleaning Patterns: Zigzag
  • Safety Features: Safety lock technology
  • Power Consumption: N/A
  • Remote Control: Remote
  • Dimensions: N/A
  • Warranty: 1-year; 60-day money back

A trustworthy model, created to handle both framed and frameless windows, it distinguishes itself through a robust design, which packs the following features:

  • Edge detection sensors – help it take notice if the end of the surface approaches and change its direction to avoid falling.
  • Bumpers – positioned both in the front and in the back, they help it identify obstacles like frames or large debris and avoid getting stuck.
  • Start/Pause button – makes it easy to manage and remove from the window without requiring for the unit to be unplugged first.
  • Speaker – in case the power delivery to the device is cut due to a power outage or other incident, the backup lithium-ion battery activates to keep it in position, while an alarm is transmitted through the speaker to let you know about the situation.
  • Power cord – long enough to allow the robot to move on the surface and reach all the corners.
Intelligent Mapping

Provided with smart Gyro mapping navigation, it can visualize the surface and determine the most efficient path to follow. Then, it follows a zigzag pattern, moving at a speed of 8.2 or 8.5 cm/s, depending on the selected operating mode, which employs either a rolling brush or a vacuum nozzle. It moves smoothly on windows that have a thickness of at least 3 mm and can be controlled from the distance through a remote. Moreover, you will get a 1-year service contract that will cover eventual flaws or mishaps and even a 60-day guarantee that will get you your money back in case you aren’t pleased with the product.


  • Can scan the surface and create a map to help it find the shortest path
  • Smart sensors help it identify edges and stay within the perimeter
  • Offers two cleaning modes that allow it to tackle tougher spots
  • Safety lock keeps the suction on for a while in case the power is off
  • Remote control available



Ideal for regular cleaning, this model can easily tackle large surfaces and get the job done fast. It is driven by advanced technology and uses sensors to find its path on the windows, thus guaranteeing that no spot will remain uncleaned. By using two operating modes, it can deal with tougher dirt and leave behind only the freshness and spark of clean windows.

3. ECOVACS Winbot W730R

Check Price at Amazon


  • Compatibility: Framed and frameless windows
  • Cleaning Speed: N/A
  • Cleaning Modes: 3 Operating modes
  • Cord Length: 4 feet
  • Backup Battery Type: Ni-MH
  • Backup Battery Life: N/A
  • Cleaning Patterns: Single direction, zigzag
  • Safety Features: Safety pod and tether
  • Power Consumption: N/A
  • Remote Control: Remote
  • Dimensions: 13.08 x 11.03 x 5.32 inches
  • Warranty: 1-year

If your home design includes glass doors, then you know how difficult it is to keep them spotless. Not with this unit, however, as it was specifically created to handle frameless surfaces (frame surfaces also). By employing laser sensors and an intelligent computer, it can easily identify the edges and reroute to clean the entire surface without falling off it. The fact that it can plan its path and move either in a single direction or by following a zigzag pattern allows it to finish the cleaning faster.

It basically replicates the manual cleaning by following three steps in the process. Thus, it first sprays a cleaning solution on the windows to allow dirt to soften. Then it uses a squeegee to thoroughly wash the surface, removing dust, pollen, and other types of dirt. The last step implies the use of a cleaning pad, which dries the surface, ensuring that no stains are left.

It sustains its position on the glass through suction, which is powerful enough to support the unit through the operation. It requires staying connected to an outlet and comes with a 4-foot cord and an extension cord in case the outlet isn’t near. On the other hand, if by accident, your home is left without power, it has a backup Ni-MH battery that kicks in and sustains suction until you can get the device off the window. A safety pod is also included, which acts as a suction cup, keeping the unit connected to the window through a safety string in case the backup battery runs out and you don’t manage to remove the device.

The package includes a remote, but what’s truly remarkable is the possibility of correcting possible errors in real-time and from the distance. Thus, even if the unit may get stuck when it encounters an obstacle (this technology is still rather new and improving), you will be able to get it moving again with the help of the remote. In some cases, however, you may need to get off the couch and reposition it.


  • Easy operation as it doesn’t need to be filled with a cleaning solution. You will only need to spray it on the pads
  • Supplementary safety features ensure that it doesn’t fall off the surface
  • Innovative mapping technology allows it to work on frameless windows
  • Easy control from the distance and real-time error solving


  • It can get stuck and will require your help to get back on track
  • The operation tends to take a lot of time


Designed to sense when the edge of the surface approaches and equipped with bumpers that will help it change direction without getting damaged by obstacles, this unit can cover all glass surfaces in a home, regardless if we are talking about windows or glass doors. It is secured against accidental falls and comes with a 1-year service contract, so, overall, it would make a nice household help for busy people.

4. Mamibot W120

Check Price at Amazon


  • Compatibility: Frame and frameless glass, tables, and smooth floors or wall surfaces
  • Cleaning Speed: 2 min/m2
  • Cleaning Modes: Wet and dry cleaning
  • Cord Length: N/A
  • Backup Battery Type: Lithium ion
  • Backup Battery Life: 20 min.
  • Cleaning Patterns: Zigzag pattern
  • Safety Features: Safety rope and lace-lock screw
  • Power Consumption: 75W
  • Remote Control: Remote control & App
  • Dimensions: 9.84 x 9.84 x 3.35 inches
  • Warranty: 5-year for the product; 1-year for the battery

Among the most stylish models available, the W12 manages to combine a trustworthy design with efficient technology and a good price, a mix that makes it highly attractive in the eyes of the customers. It presents a sturdy handle that allows for easy positioning and displays an easy-touch key that will help you program it on the spot. For remote operations, it offers a remote control along with a dedicated app that allows you to link it to your phone and select among three operating modes or get notifications when the job is done.

It can handle both framed and unframed windows, but the big surprise here is that it will also work on tables, floors (they would need to be smooth, however), and even wall surfaces. The anti-falling sensor doesn’t allow it to go over the edges, while the safety rope keeps it from falling on long distances. Furthermore, it packs a 650mAh lithium-ion battery that works as a backup in case a power outage occurs. Thus, the suction will be maintained for 20 minutes, during which an alarm will sound to alert you.

As it is lighter than other models, it can be used on almost all types of glass without breaking them. It moves fast, with a speed of 2 minutes per square meter, and offers both wet and dry cleaning. The package includes two microfiber cloths that won’t leave marks. Plus, they are super easy to clean in the washing machine. The unit follows a zigzag pattern, applying a cleaning solution and wiping out the glass in one movement. Plus, at only 65 dB, it is pretty quiet and can do its job without disturbing the peace of your home.

For eventual manufacturing flaws, the company backs it for 5 years. Nonetheless, only one year is offered for the battery.


  • Slim and lightweight design allows it to work on thinner glass
  • It offers a dry cleaning mode that can eliminate the manual effort of manually pre-dusting the surfaces
  • Backed by one of the most generous service contracts
  • Intelligent functions and smart connectivity make it more user-friendly


  • Some customers pointed out that the cloth dries too quickly, as there’s no tank to provide water during the operation
  • Not very efficient at cleaning corners


Beautifully designed and faster than similar units, it is totally worth every penny. The extensive warranty keeps you covered in case of damage that may be caused by a flaw in the design, and you get extra safety features that guarantee that the unit won’t fall and break.

5. Prainskel Window Cleaner Robot


  • Compatibility: Frame and frameless glass, glass doors and floor windows
  • Cleaning Speed: 3 min/m2
  • Cleaning Modes: 1 Automated mode + 1 Manual mode
  • Cord Length: 9 ft. + 9.8 ft. extension cord
  • Backup Battery Type: Lithium
  • Backup Battery Life: 30 min.
  • Cleaning Patterns: 3
  • Safety Features: High-strength safety rope
  • Power Consumption: N/A
  • Remote Control:
  • Dimensions: 10 x 8.5 x 11 inches
  • Warranty: 3-year

This is a quite fast model that moves with a speed of 3 minutes per square meter and which can be used on all types of glass surfaces, no matter if they are framed or not. It comes with super-strong suction – 5,600 Pa, which allows it to stick to the glass and not fall while moving. In case of emergency, if the power is off for longer, it has a backup battery that offers protection for up to 30 minutes. A supplementary safety feature is the safety rope, which can sustain the robot if suction stops. This allows you to use it both on interior and exterior windows without fearing that it may get damaged. Plus, as it comes with MEMS edge detection, it knows when it operates on frameless doors and will change the path as it senses it approaches the edges.

There are two ways to control it – by pressing the button on the housing or by using the infrared remote that is included in the package. The remote allows you to pick among two modes: the automatic mode, which employs three different paths to deliver the best results, and the manual mode, which allows you to take control over the robot and basically drive it on the surface towards the dirtiest spots. The power cable measures 9 feet, but you get an extension cable as well, which adds an extra 9.8 feet.

Like most budget models, this one doesn’t have a reservoir for cleaning solution, so you will need to spray it on the microfiber cloth at the beginning of the cycle. If you need to cover a large surface, you may need to pause the robot from time to time to spray more solution. In the package, you will find 6 microfiber cloths, a nice stash that will keep you for a while. This model is also covered by a nice warranty which extends over 3 years from the purchase date.


  • Good cleaning time – can cover large windows pretty fast
  • Navigates on its own, but you can steer it with the remote if you like
  • Safety rope and backup battery included to avoid accidents
  • Good quality-price report with a long warranty


  • Loud operation due to the powerful suction
  • You need to pay attention when applying cleaning solution as, if the windows get too wet, the robot may fall


If you are looking for a budget model that can clean the windows without making much of a fuss, you can pick Prainskel. It comes with a set of sensors that are efficient in detecting frames and edges, so you will be able to use it basically on all glass surfaces. Even if it is quite loud, it does a good job that you will no longer have to do.

6. Sophinique X5

Check Price at Amazon


  • Compatibility: All types of glass, flat wall, table, floor, ceiling, window and hard-to-reach places
  • Cleaning Speed: 4 min/m2
  • Cleaning Modes: 4 Automated operating modes
  • Cord Length: 20 ft.
  • Backup Battery Type: Lithium Metal
  • Backup Battery Life: 30 min.
  • Cleaning Patterns: Auto left than down, Auto right than down, Auto up than down
  • Safety Features: High-strength safety rope (150Kgf)
  • Power Consumption: 80W
  • Remote Control: Remote & App
  • Dimensions: 11.42 x 5.51 x 4.53 inches
  • Warranty: 1-year

Tall windows? You won’t have any problem cleaning them with this unit, as it comes with a 7 feet adapter cord and a 13 feet extension cord, being able to climb surfaces up to 20 feet tall. The great advantage it offers is that it can handle windows with curved edges thanks to the rounded pads and distinctive design. It boasts a vacuum adsorption capacity of 6 Kg, which is more than sufficient to keep it moving on vertical surfaces without falling. Just like the previous models, it includes a backup battery, which, in this case, can keep it locked for up to 30 minutes in case the power is off. It also packs the safety string (150 Kgf) designed to keep it hanging in case the battery runs out.

Powered by an 80W motor and driven by a sensor-based technology that allows it to calculate the most efficient path, it can employ three cleaning patterns, namely, start from the left and move down, start from the right and move down, or start from the top and move down. It uses microfiber cloths to wipe its marks and offers 4 operating modes, which can be selected by using either the included remote or an app that can be installed on iOS systems 7.0 or higher or Android systems 4.3 or higher. The speed is rather low at 4 minutes per square meter but, according to the customers who have tried it, the results are excellent.

It is more compact than other robots, with a length of 11.42 inches, a width of 5.51 inches, and a depth of 4.53 inches. It is also more lightweight at only 4.9 pounds. These features contribute a lot to its versatility, as they allow it to work on thin glass with a minimum thickness of 3 mm. Moreover, it can also clean tables, floors, flat walls, and other hard-to-reach spaces. The manufacturer backs it for 1 year.


  • Lightweight and compact, can squeeze into spaces that are difficult to reach
  • Microfiber cloth is soft on the surfaces and protects them
  • Backup battery offers up to 30 minutes of suction protection in case the power goes down
  • Can detect edges and obstacles due to the intelligent navigation technology


  • Doesn’t include a water or cleaning solution recipient, so you will need to spray the pads periodically
  • Although it cleans rounded surfaces, it cannot handle corners due to its shape


A budget option that can easily tackle diverse surfaces, it can help you maintain your whole home clean. It can scan the surface and use different cleaning patterns to cover all the spots. The design allows it to handle rounded frames. Nonetheless, note that it cannot cover corners, so you will need to do this operation yourself.

7. Gladwell Gecko

Check Price at Amazon


  • Compatibility: Tables, high windows, ceilings
  • Cleaning Speed: 4 min/m2
  • Cleaning Modes: 3 Auto modes + 1 manual mode
  • Cord Length: 13 feet
  • Backup Battery Type: Polymer lithium-ion
  • Backup Battery Life: N/A
  • Cleaning Patterns: Intelligent path
  • Safety Features: Safety rope
  • Power Consumption: 80W
  • Remote Control: Remote & App
  • Dimensions: 12.2 x 9.92 x 6.46 inches
  • Warranty: 1-year

Equipped with two microfiber pads and strong suction, this model is fit for windows, tables, and high smooth ceilings. It comes with a 13-foot power cord that allows it to navigate on larger and higher surfaces while keeping it connected to a reliable power source. The safety rope was tested to support its weight and keep it from falling on the ground and breaking. Besides that, it includes a polymer lithium-ion battery that will sustain suction for a while in case a power failure occurs. It also features anti-fall technology, which means that an algorithm helps it detect edges and stay within the perimeter.

It can be operated either with the help of the included remote or through an app that offers access to mode selection. The unit presents three automatic operating modes, one manual mode, and intelligent path, which is determined after the artificial intelligence is done mapping the surface. It moves at a speed of 4 minutes per square meter.

The pads allow for deep cleaning, scrubbing, and wiping the windows without scratching them. The device doesn’t comprise a tank to store water or cleaning solution, so you will need to reapply it on the pads once in a while. On the other hand, the microfiber is easily washable in the washing machine, so there’s no trouble here. Plus, the device is pretty easy to handle and store, as it is smaller, measuring only 12.2 inches in length, 9.92 inches in width, and having a depth of 6.46 inches. Also, it is backed by a 1-year service contract.


  • Fairly lightweight, can tackle thinner glass (at least 3 mm)
  • Dependable safety features
  • The microfiber pads are easy to clean
  • Long cord allows it to cover large surfaces


  • Rather slow
  • Not a good match for cleaning corners


A budget option that works impressively well, this model is both easy to handle and store due to the small dimensions. Like all models in this top, it is driven by intelligent technology, which allows it to find its path without human assistance. Although it is a bit slow, it won’t require constant supervision, as it comes with two safety features, namely a safety lock and a safety rope.

8. AlfaBot X7

Check Price at Amazon


  • Compatibility: Framed windows, Floor, Tiles
  • Cleaning Speed: 4 min/m2
  • Cleaning Modes: 3 Auto modes + 1 manual mode
  • Cord Length: 7 feet adapter cord + 13 feet extension cord
  • Backup Battery Type: Lithium-ion
  • Backup Battery Life: 30 minutes
  • Cleaning Patterns: Up then down, Left then down, Right then down
  • Safety Features: Safety rope
  • Power Consumption: 150W
  • Remote Control: Remote & App
  • Dimensions: 11.4 x 5.9 x 3.3 inches
  • Warranty: 1-year

Boosting a suction power of 4,000 Pa, the AlfaBot X7 is ready to clean high windows with precision and with a low falling risk. It comes with a 7-foot cord and a 13-foot extension cord as well, which give it a total of 20 feet of leverage to cover wide and high surfaces. Although it was designed for windows, it can successfully clean tiles, floors, and other smooth surfaces like glass tables, for example. The advanced opt coupler sensors help it detect the edges, so it won’t fall as long as it is used on framed windows.

The generous 50 mL water tank allows it to cover a total area of 161.5 sq. ft., and it integrates a backup battery in case the power goes down. The battery will last for 30 minutes, giving you enough time to remove the device from the window, so it is important to keep it full. It only takes 2 hours for it to recharge completely. Moreover, keep in mind that it comes with a safety string, so you can secure it, especially when cleaning tall windows.

It can be controlled either through the remote control that comes in the package or through an app you will need to install on your smartphone. You can select among three automatic modes, which offer different cleaning patterns, or switch to Manual mode and guide the machine yourself. It can clean at a speed of 4 meters per second, and you can program it to spray water while it is cleaning, so this will no longer be your task.


  • Large water reservoir allows it to autonomously clean large surfaces
  • 30-minute battery backup
  • 3 auto modes to choose from
  • High-end sensor help it detect edges and prevents bumps


  • Not suitable for frameless doors
  • Its rounded edges prevent it from thoroughly cleaning the corners


With AlfaBot X7, you get a smart robot for a really good price. It has strong suction and comes with a backup battery and a safety string, so you can rest assured that, even in extreme situations, your investment will be safe. Besides this, it is quite efficient in cleaning multiple surfaces and has a large water reservoir that allows it to complete the job without interruptions.

Frequently Asked Questions

How good are robot window cleaners?
They are great, and improvements are in process. High-end models use AI technology to find their path more efficiently and can recognize edges and obstacles. They have additional safety features and backup batteries that reduce the risk of accidents and prolong their lives. Nonetheless, larger debris and tough dirt are still an issue and usually need to be removed manually. One can only expect that the new technology advancements will soon solve them as well.

How do robotic window cleaners work?
They stick to the surface with the help of a suction mechanism and use intelligent technology to identify edges and obstacles. They need to be connected to an outlet to work. When powered on, they run in a specific pattern designed to cover the surface as efficiently as possible. Most models have pads that need to be sprayed with a cleaning solution, but more advanced models include a reservoir for this purpose. They also use cloths to wipe out marks.

How do I use a robotic window cleaner?
Depending on the model, you may either have to fill a recipient with a cleaning solution or spray the solution directly on the pads. Then, plug the unit in, power it on, and attach it to the window. The suction force will keep it in place. Use the remote or an app to select the desired operating mode and let the unit do its job. You may have to spray the solution on the pads more often if you have a larger surface that needs to be cleaned. Also, you will need to manually move the device from one window to another.

Will a robotic window cleaner work on rough glass?
Yes, most units will, as the suction force is powerful enough to maintain the robot on its path.

Will a robotic window cleaner work on tiles?
Some models do work on tiles. To make sure you are using yours properly, check the user manual or the manufacturer’s website.

Why are my windows streaky after I clean them?
The most common cause for streaky windows when using a robot is the microfiber cloth or pad. When these accessories become too dirty or used excessively, they will not be able to provide good cleaning and wiping. Check your robot. If they are dirty, toss them in the washing machine, but check the instruction manual first. Some may need to be washed manually. If they are just too old, buy new ones and get back to having sparkling windows.

Can a robot window cleaner clean frameless glass?
Most models can. By employing a smart sensor, which will identify the edges of the surface, and AI technology, able to interpret the signals and avoid falls, they can safely move around the premises without falling.

What happens if the power goes out while the robot window cleaner is still operating?
A backup battery is available in every model. It activates when no power is being transmitted from the outlet and secures the unit in place so it doesn’t fall. Most batteries offer 20 to 30 minutes, during which an alarm usually sounds to announce the problem. If the unit isn’t removed at this time and the power isn’t back on, it will fall. Nonetheless, most models also come with safety strings that keep them hanging and prevent contact with the floor.

What solution can I use with my robotic window cleaner?
Many manufacturers offer their own cleaning solutions to be used with the units, arguing that regular products found on the market can damage the robot. We recommend using the matching solution for your unit. However, if you are going to buy a different one from the supermarket, at least make sure that it doesn’t contain alcohol, acid, or ammonia, which could damage the device.


Technology has reached the point where you can rely on robots to do some of the heavy (and sometimes dangerous) jobs and take some time for yourself. While perfection hasn’t been attained yet, the robots in our top are efficient and can find their way on the windows automatically, providing great results.

Among them, you have found units that can tackle square frames, round frames, or even frameless surfaces. The specifications are diverse, and this can influence the operating mode. Thus, let’s take one more minute to revise some of the best models and see what they can do.

Best Overall: Hobot 298

It is among the most independent models, as it comes with an integrated reservoir for a cleaning solution. Thus, there’s no need to spray the solution on the pads, and you can rely on it to finish its job without requiring a refill. Besides this excellent quality, it also packs one of the cleverest technology and is faster than most of its competitors. It is also backed by multiple safety features, designed to maintain it intact even when accidents happen.

Editor’s Choice: GlassTec Window Cleaning Robot WZJJRTM

With a beautiful and intuitive design, this model would make an excellent help to any homeowner. It moves fast, using cutting-edge sensors to analyze the space and establish the most efficient route. It can detect edges and obstacles and can be easily operated from the distance. Plus, the backup battery has good capacity so you can rely on it when the power is down.

Best Robotic Window Cleaner for the Money: Mamibot W120

It offers an excellent balance between price and quality, managing to stay one of the most trustworthy models that can be acquired by budget buyers. The design is elegant and compact, and the sound produced is acceptable. Plus, it can be operated through an app, which offers access to diverse automatic operating modes and even a manual mode.

Best Robotic Window Cleaner for Multiple Surfaces: Sophinique X5

If you are looking to clean not only windows but tables, tiles, ceiling, and other smooth surfaces, this model will be your most reliable help. It has a good navigation system and comes with a long cord that will allow it to cover larger surfaces. Moreover, it uses microfiber pads to do its job, which don’t scratch the surfaces but wipe them clean, leaving behind only the sparkle.

Best for Glass Doors: ECOVACS Winbot W730R

With many robots, where there are no frames, there’s a serious problem. Not with this model, however, as it includes cutting-edge sensors that can tell when the end of the surface approaches and allow the unit to approach the edges but not cross them. Thus, it is a nice match for glass doors that don’t have frames, and you can expect the job to be done quickly, as the algorithms behind it can easily compute the fastest cleaning path.

Lexie Thorne
Lexie Thorne
Lexie is the newest member of the team, previously working for a local business that sold, among other items, robotic vacuums. She takes a keen interest in the latest tech and considers herself to be a veritable tech geek. Using her connections, Lexie makes sure that she always talks to experts when putting together reviews and articles to ensure the information you read is reliable and makes a difference toward aiding you to better understand how automated devices for home use work.

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