True full-surface cleaning with EdgeSense technology
Up to 99% clean windows
@kolmiokuudelle
English
Voice Assistant
BEST SELLER NR.1
5 Year Warranty
Free Shipping
30 Day Returns
Professional Window cleaning robot HESTER M3 PRO Extra Clean with AI navigation & Corner Cleaning for Windows, Mirrors & Tiles
Over 1000+ purchased last month!
MEGA SALE -37% DISCOUNT!
Our No. 1 and most advanced window cleaning robot yet, built for a new standard of clarity. Experience brighter views and pure, natural light through perfectly clean windows.
360°
Hydro360 Spray
Multi-angle spray for streak-free cleaning.
99%
99% Coverage
Cleans corner to corner evenly.
2X
Dual Cloths
Removes dirt and polishes surfaces.
FLOW
Stable Wheels
Smooth movement on wet surfaces.
TRUST
Trusted Worldwide
Used daily by thousands of customers.
5Y
5-Year Warranty
Long-term protection included.
FINAL PRICE WITH CODE:
$289.67
$349.00
17% EXTRA DISCOUNT
00 d : 00 h : 00 min : 00 s
Regular price
$349.00
Sale price
$349.00
Regular price
$554.00
Unit price
Save 37%
More than 200,830 satisfied customers
Amazing results
I honestly didn’t expect it to clean this well. The Hester M3 Pro leaves my windows spotless with almost no effort from me. It’s especially great for large glass surfaces and saves so much time every week.
★★★★★
Olivia M.
✓ Verified
Olivia M.
✓ Verified
Crystal clear Windows
Very impressed with the cleaning performance. It sticks securely to the glass, moves smoothly, and removes dust and fingerprints really well. My windows have never looked this clean.
★★★★★
Emma R.
✓ Verified
Emma R.
✓ Verified
Highly recommend
The Hester M3 Pro has become one of my favorite home gadgets. It’s easy to use, surprisingly quiet, and does an excellent job on both interior and exterior windows. Highly recommend.
★★★★★
Sophia L.
✓ Verified
Sophia L.
✓ Verified
So worth it
I was skeptical at first, but this robot exceeded my expectations. It cleaned corners better than I thought and left no streaks behind. A real time-saver for busy households.
★★★★★
Ava K.
✓ Verified
Ava K.
✓ Verified
Great results every time
Fantastic product! Setup takes only a minute, and the results are consistently great. The Hester M3 Pro makes window cleaning effortless and gives professional-looking results every time.
★★★★★
Mia T.
✓ Verified
Mia T.
✓ Verified
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What’s in the box +
1x Window robot HESTER M3
4x Cleaning Cloths
2x Polishing Cloths
1x Remote control
1x Power cord (adapter)
1x Safety rope
1x Bottle for liquid
1x Instruction
4x Cleaning Cloths
2x Polishing Cloths
1x Remote control
1x Power cord (adapter)
1x Safety rope
1x Bottle for liquid
1x Instruction
How to use Hester M3 Pro +
Watch the video above to see how to set up and use Hester M3 Pro for streak-free window cleaning.
User manual +
You can open the HESTER M3 user manual below.
Open user manualShipping & returns +
Orders are processed quickly and shipped with tracking. If your item arrives damaged or you are not satisfied, contact our support team for return assistance.
Payment methods +
We accept Visa, Mastercard, PayPal and other secure checkout options available at checkout.
Professional Window cleaning robot HESTER M3 PRO Extra Clean with AI navigation & Corner Cleaning for Windows, Mirrors & Tiles
Regular price
$349.00
Sale price
$349.00
Regular price
$554.00
Unit price
Experience effortless cleaning
Real customers. Real results.
@kolmiokuudelle
@arkeniestetiikkaa
@sconley7131
@dennispoppe
@emiliakomarnicka_
@victorialovise
@styloly
@magdalena___stepien
@patrykboryniec
@pauliinjasmin
Powerful and Precise
Next generation window cleaning robot
Hester’s innovative edge technology takes smart cleaning to new heights. With advanced sensor system, the robot ensures superior side cleaning and thorough corner reach, tackling areas often missed by traditional cleaners (older window cleaning robot versions). Clean corners are essential for a polished look, making your windows shine from edge to edge.
Perfectly Clear Windows with Hydro360 system
More Powerfull and Targeted Spraying
Gentle contact
More Powerfull and Targeted Spraying
The upgraded spray nozzles deliver more powerful and precise spraying, effectively breaking down even stubborn and long-standing dirt.
This ensures a deeper clean with less effort, leaving windows spotless every time.
Against all
types of dirt
Against all
types of dirt
4
4
Upgraded
nozzles
Upgraded
nozzles
More powerful and
targeted spraying
More powerful and
targeted spraying
Polishing cloths for extra shine after cleaning
Polishing cloths for extra shine after cleaning
Non Slipping Wheels
Non Slipping Wheels
5
5
Years
warranty
Years
warranty
Clean And Shine Duo
First robot to have
For cleaning
The yellow cloth is designed for wiping off dirt and grime. Its texture helps lift away stubborn particles, making surfaces clean and ready for the next steps.
For polishing
The blue cloth is meant for polishing. It gently buffs the surface to a flawless shine, helping you achieve a perfect, streak-free result.
Cleaning steps
1
Dry Cleaning
In the first step, use the yellow cleaning cloth dry (without spray). This removes loose dust, dirt, and surface particles.
Tip: Replace with a clean yellow cloth before moving to step 2.
2
Wet Cleaning
In the second step, use a new yellow cloth and enable the spray function. This loosens stuck on grime and removes deeper dirt buildup.
Tip: Avoid cleaning in direct sunlight or on hot glass surfaces – the liquid may dry too quickly, making it harder to clean and leaving streaks behind.
Always use a fresh cloth for optimal performance.
3
Polishing
For the final step, switch to the blue polishing cloth, made with a special texture that enhances shine. No spray is needed. This dry pass removes any remaining streaks or haze, leaving the glass perfectly clear and streak-free.
Beginner
Friendly
Beginner
Friendly
Edge detection technology
for frames and frameless surfaces
Edge detection technology for frames and frameless surfaces
Voice Assist
Voice Assist
10+ languages
10+ languages
10
10
Years waranty
Brushless Motor
Years waranty
Brushless Motor
Real-time
Real-time
AI mapping
AI mapping
Gap detection technology
No Slipping Wheels
For franeless surfaces
Special Nano coated wheels ensures strong grip and prevents slipping even on very wet conditions
No Slipping Wheels
4 Powerful cleaning modes
Special Nano coated wheels ensures strong grip and prevents slipping even on very wet conditions
4
Powerful cleaning modes
Compact design with ultra thin, extra light body
Speak in your native language!
An advanced voice technology that provides real-time updates on the robot’s actions, status, and progress. With clear and precise vocal notifications, users stay informed effortlessly, ensuring a smooth, intuitive, and connected cleaning experience.
and 10+ other languages!
AI Mapping
AI Mapping technology enables the robot to scan the window and plan the most efficient cleaning path. The AI-driven system maps the window, avoids obstacles, tracks progress, and remembers cleaned areas. It ensures no spot is missed and automatically returns to its starting point after completing the task.
Adaptive Cleaning System
Four cleaning paths
Deep Cleaning and Polishing
Combination of N and Z trajectories (for the most effective cleaning. Ensures that the entire surface is cleaned effectively.
N cleaning mode
The window cleaning robot moves vertically, up and down over the entire surface area. For tall or narrow windows.
Z cleaning mode
The robot moves horizontally, from one side of the window to the other, forming the letter Z. For wide or rectangular windows.
Target cleaning
Powerfull stain removal where it’s needed most. Window cleaning robot focus on a specific area with concentrated dirt, applying extra cleaning cycles for best results.
Where to use the window robot HESTER M3?
The HESTER M3 window cleaning robot is not only capable of cleaning window surfaces, but it can also be a great aid for cleaning various glass surfaces and partitions. Additionally, it can be employed for the maintenance of large offices, workspaces or shop window areas.
For various types of windows: standard, panoramic, frameless
For glass surfaces
and marble walls
and marble walls
For offices, work spaces, shop windows, restaurants
For balconies, terraces and exterior glass surfaces
Product details
Technical Specification
Input Voltage
100-240V, 50Hz/60Hz
Control Mode
Remote Control
Rated Power
72W
Noise
65-70dB
Water Tank Capacity
100ml
Edge Detection
Automatically Detects Window Borders
Built-in Battery
500mAh
Anti-fall Control
Power loss protection +
Safety rope for extra security
Power Outage Protection Time
Stays attached for up to 20 minutes if power fails
Cleaning Mode
4 Auto Modes + Manual
Size
216*216*69mm
Water Spraying Method
Manual / Auto
Included
What's in the box?
Everything you need to start cleaning with HESTER M3
Window robot HESTER M3
4 Cleaning Cloths
2 Polishing Cloths
Remote control
Power cord (adapter)
Safety rope
Bottle for liquid
Instruction
Welcome to the clean window family!
Join more than 25,300+ families looking at the world through clean windows
“Finally, window cleaning without the hassle! This new robot is amazing — just fill the water, press start, and it does everything. I especially love how well it works on frameless windows, something my old robot couldn’t handle.”
Sarah
“What I love most is that this robot isn’t just for windows. I’ve used it on glass doors, mirrors, even tiled walls — it handles everything beautifully. Totally worth the upgrade!”
Jore
“I never thought a robot could clean mirrors and shower glass so well! The AI mapping is super smart — my windows are sparkling, the corners are spotless, and I can just relax while it works.”
Silvia
“Best purchase I’ve made this year. We have lots of tall windows and this robot handles them like a pro. It reaches every corner and the polishing feature makes a real difference – no hazy residue, just clean, clear windows. It's quiet, sticks securely, and actually does a better job than I do myself. Highly recommend.”
Laura
We are the official representatives of the brand in America and Europe
5-year warranty
Enjoy a 5-year warranty
Best price guarantee
For the highest quality product at the best price, purchase directly from official HESTER representatives.
Free delivery
We offer free shipping across America and you can expect your order to be delivered within 1-2 business days.
Get in touch
by mail: info@hesterpro.com
Frequently asked questions FAQ
How does a window cleaning robot work?
The window cleaning robot can effectively clean both the exterior and interior of windows, even those that are hard to reach. It can be used to clean standard, panoramic, and frameless windows, making it a versatile tool for maintaining the windows in homes, offices, workspaces, shops, and restaurants.
The window robot is a cleaning device that utilizes state-of-the-art technologies and automated movement. It firmly attaches to the window and moves according to the selected mode, allowing you to effectively clean various types of dirt such as dust, pollen, rain and fingerprint stains without leaving any streaks.
Does the window robot only clean windows?
Robots can clean more than just windows! The HESTER M3 PRO window cleaning robot will effectively clean mirrors, glass surfaces, tiles, shower cabins, terrace glass, and other similar smooth surfaces. Edge sensors determine the cleaning trajectory, so the device is suitable for use on frameless surfaces.
How does the robot water spray system work?
The HESTER M3 PRO window cleaning robot cleans windows faster than many other models on the market by evenly spraying liquid. The innovative spray system integrated into the robot evenly distributes the liquid in 0.1 ml with each spray with two metal nozzles. You will activate the spray with the remote control, after selecting the cleaning program and pressing AU (automatic spray).
How is the HESTER M3 PRO window cleaning robot controlled?
The robot is controlled by a remote control.
The remote control can be used to select the cleaning program, the direction of movement of the robot, and turn on the spraying system.
Does the HESTER M3 robot come with a warranty?
The HESTER M3 window cleaning robot comes with a 5-year warranty.
Does the robot hold firmly to the window?
Robot window cleaning is a completely safe process. The 80 W vacuum motor attaches and vacuums with a power of up to 2800 PA, which allows the robot to be firmly attached to the window. Also, the safety of the robot is ensured by a UPS battery and a special rope. The UPS battery is integrated into the device and acts as an additional source of energy in the event of a power failure. It keeps the robot on the glass for up to 25 minutes. A safety rope will save the device if the battery runs out or if the robot slips off the glass. It will keep it from falling to the ground and keep it in the air until you’re ready to bring the robot safely into your home.
Can the HESTER M3 window robot be used from outside?
It is possible, but it is important to pay attention to the outside temperature. It is not recommended to use the robot when it is raining, snowing or when the temperature drops below +5°C. In these weather conditions, it will be more difficult to achieve good cleaning results. When freezing, the robot may slide on the surface and not be able to complete the cleaning cycle properly.
What liquid should be added to the window-cleaning robot?
The HESTER M3 robot has a 100ml tank. To use wet cleaning and to clean windows with a spray system, it is necessary to fill the container.
We recommend filling the reservoir with your favorite high-quality window cleaner, which will increase the cleaning efficiency. After filling the tank with water, cleaning results may vary. The set also includes a small bottle/funnel, which will help you fill the container more easily.
Does the HESTER M3 window cleaning robot work completely independently?
The robot is highly intelligent, which means that it can do almost all of the work on its own. All you need to do is put on the clothes, connect the robot to the power source, and attach the safety rope. Once the robot is ready to go, place it onto the surface you want to clean and press the power button. The robot’s powerful suction will hold it firmly in place. You can then use the remote control to select your preferred cleaning program. If the cleaning cloth becomes dirty during the process, or if you wish to polish the window, simply replace the old cloth with a new one and continue cleaning.
