Choosing a Xiaomi window washer robot is not an easy task, because there are models on the market with different functionality, price and capabilities, and it is easy to get confused about the specifications. Some devices are suitable for small windows in the apartment, others cope with stained glass windows in private homes, and others are equipped with additional options like control through the application or automatic recognition of frames.
In this article, we analyzed the 5 most popular Xiaomi robot wash models (including the Mijia and Viomi sub-brands), compared them by key parameters: suction power, noise level, battery life, compatibility with different types of glasses and management complexity. We also took real user feedback to identify the typical problems and benefits of each model. If you are looking for a device that will save your time and effort, but do not know what to look for when buying – this guide is for you.
Why is Xiaomi’s window washer a good choice?
Xiaomi has long established itself in the smart tech market as a manufacturer of devices with the best value for money. Robot window washers are no exception.
- 🔋 Long work time: most models hold a charge of 20 to 60 minutes, which is enough to wash 3-5 windows of standard size.
- 📱 Smart management: support for the Mi Home app allows you to start cleaning remotely, adjust the schedule and monitor the status of the device.
- 🛡️ Safety: Built-in sensors prevent the robot from falling, and the safety cable (included) duplicates protection.
- 💧 Effective cleaning: technology of microfiber wipes and spraying detergent provide the result is not worse than manual cleaning.
Xiaomi robots are often equipped with automatic window boundary detection, which eliminates the need to manually program the route, especially for windows with complex geometry or a large number of wings.
⚠️ Note: Not all Xiaomi robot wash models are compatible with tinted or mirrored glass. Before buying, check this point in the characteristics of the device or from the seller.
TOP-5 robot window washers Xiaomi in 2026: a comparative table
To make it easier, we've put together a table with key parameters for popular models, and look at the suction power (which determines how well the robot will stay on a vertical surface) and the noise level, which is critical if you plan to wash windows in the presence of children or pets.
| Model | Suction power (Pa) | Working hours (min) | Noise level (dB) | Management | Price (≈) |
|---|---|---|---|---|---|
| Xiaomi Mijia Glass Robot 2 | 3800 | 30 | 65 | App, remote. | 12 000 ₽ |
| Viomi Alpha Window Cleaner | 4000 | 40 | 62 | Appendix, voice (Alice/Alice) | 15 000 ₽ |
| Xiaomi Mijia Glass Robot 1S | 2800 | 25 | 68 | remote | 8 500 ₽ |
| Viomi V3 Pro | 4500 | 50 | 60 | Annex, NFC | 18 000 ₽ |
| Xiaomi Deerma W200 | 3200 | 20 | 70 | remote | 7 000 ₽ |
Important: The Viomi V3 Pro is the only one in the lineup that supports NFC technology for fast smartphone connectivity, which is handy if you switch between devices frequently in the Xiaomi ecosystem.
Which model to choose: budget or premium?
Choosing a window washer robot depends on your needs and budget.
Budget models (up to 10 000) ₽)
If you need a device for periodic cleaning of small windows (up to 1.5 m2), pay attention to:
- 💰 Xiaomi Deerma W200 — The most affordable model with basic functionality, suitable for rented housing or cottages.
- 🔄 Xiaomi Mijia Glass Robot 1S — slightly more expensive, but equipped with a more powerful engine (2800 Pa vs 3200 Pa in Deerma).
The downsides of budget models are less battery life (you’ll have to recharge more often) and a lack of smart controls. For example, the Deerma W200 doesn’t sync with the Mi Home, which is uncomfortable if you already have other Xiaomi devices.
Premium models (from 15 000) ₽)
For large windows (from 2 m2), stained glass or private houses with panoramic glazing, it is better to choose:
- 🏆 Viomi V3 Pro is the leader in suction power (4500 Pa) and operating time (50 minutes) and ideal for windows with a tilt of up to 15°.
- 🗣️ Viomi Alpha – Supports voice control through Alice and has the lowest noise level (62 dB).
The premium models are highly automated: they recognize the shape of the window, bypass obstacles (such as handles or loops), and can run on a schedule, and they are equipped with double wipes for more thorough cleaning.
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If you have windows with tinted or mirrored coating, choose models with suction power from 4000 Pa - they are better kept on smooth surfaces.
Which is more important: suction power or operating time?
These are two key parameters that often contradict each other, and let's figure out what to look for depending on your tasks:
The suction power (measured in Pascals, Pa) determines how tightly the robot is holding onto the glass.
- ✅ It is safer to use on sloping or high windows (for example, on the balcony of the last floor).
- ✅ The device copes better with uneven glasses or frames.
- ❌ Battery discharges faster (powerful models consume more energy).
The battery life is a measure of how many windows the robot can wash in a single cycle, and it's important to consider:
- 🔋 For a standard two-room apartment (4-6 windows) will be enough 20-30 minutes.
- ⚡ For cottages with panoramic windows or offices, you need a robot with a working time of 40 minutes.
- 🔌 All Xiaomi models support continued cleaning after recharging, but this increases the overall process time.
Example: If you have a 1.5 m2 window and 1.2 m high, a robot with a power of 3800 Pa and a running time of 30 minutes (Xiaomi Mijia Glass Robot 2) can cope in one cycle, but for 2.5 m2 windows you will need either a more capacious battery (Viomi V3 Pro) or manual refueling.
How to check the actual power of absorption?
Which windows are not suitable for Xiaomi robot washers?
Despite its versatility, Xiaomi’s washbots have limitations on window types, and here are the cases where the device may fail or even damage the glass:
- 🚫 Too old or deformed frames: If the window doesn’t close well or has large gaps, the robot may get stuck or fall.
- 🚫 Glass with strong tinting or mirror coating: the device’s sensors may not recognize the boundaries, which will cause the robot to move down.
- 🚫 Windows with relief or patterned glass: napkins will not be able to clean the surface qualitatively, and suction will be insufficient.
- 🚫 Windows with windows or framing: the robot can cling to the mechanism and stop.
It is also important to consider the climatic conditions:
- ❄️ Lower temperature +5°C detergent can freeze, and wipes - lose elasticity.
- ☀️ Under direct sunlight, the robot can overheat (especially budget models without a cooling system).
⚠️ Warning: If your windows are facing the sun, choose UV-protected models (like the Viomi Alpha) or the plastic parts of the case may turn yellow over time.
How to use the robot window washer: step-by-step instructions
Even the most advanced device will not perform well if it is not prepared correctly.
- Clean the window of the large debris: remove dust, spider webs and sticky leaves from the frames and glass. The robot is not designed to clean up large particles.
- Apply a detergent: use a special glass spray (e.g. Xiaomi Mijia Glass Cleaner) or dilute the dishwasher in water (1:10). Do not use abrasive compounds!
- Secure the safety cable: Even if the robot is equipped with fall sensors, the cable is a mandatory precaution.
- Select the mode of operation: 🔄 Automatic – the robot determines the boundaries of the window. 📐 Manual – you set a route using a remote or app. 🕒 Scheduled cleaning starts at a given time (not available in all models).
Start cleaning.
After completion of the work:
- 🧼 Wash the wipes under running water and dry them.
- 🔋 Put the robot on charge (even if the battery is not completely discharged - this will prolong the battery life).
☑️ Preparing the robot for the first cleaning
Frequent Problems and How to Solve Them
Even Xiaomi models that have been tested sometimes fail, and here are the most common problems and ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| The robot moves down | Weak suction power or dirty wipes | Clean the wipes, check the density of the fittings. For inclined windows, use a model with a power of ≥ 4,000 Pa. |
| Can't recognize the window's boundaries | Too dark or mirrored glass | Plug light tape (such as paint tape) on the frame for better contrast. |
| Stops in the middle of cleaning | The battery is drained or the mechanism jammed. | Charge the robot, check if the garbage got into the rollers. |
| Leaves divorces | Inadequate detergent or worn wipes | Soak the wipes in a solution of vinegar (1:1 with water) for 10 minutes, then rinse. Use a special remedy for glasses. |
If the robot stopped turning on or gives an error, try resetting to the factory settings.
- Turn off the device.
- Press the power button for 10 seconds.
- Connect to the charger and turn it on again.
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If the robot is not well maintained on the glass, try moistening the wipes with water before cleaning - this will increase the grip.