The Tosima W5 is a window cleaning robot with up to 6,400 Pa of suction, a two way ultrasonic spray and what Tosima calls a triple safety system. BestReviews praises its spray and safety features, but basic details like the backup battery, cord length and warranty are not published, and the one listing we found priced it above our main pick. We would only consider it at a deep discount from a seller with easy returns.
What the Tosima W5 is
The Tosima W5 is a robot that holds itself to glass with suction and wipes windows, mirrors and glass doors for you BestReviews via KTLA ↗. Tosima is a smaller brand sold mostly through Amazon and resellers BestReviews via KTLA ↗ Under Yours listing ↗.
A reseller listing describes variable frequency suction of up to 6,400 Pa, a dual spiral cleaning design and a bidirectional ultrasonic spray fed from a 65 ml tank that you can see from the outside Under Yours listing ↗. It sprays automatically twice per movement and stops spraying near the edges Under Yours listing ↗.
For safety, the listing mentions an air pressure sensor for anti drop protection and AI edge detection, under the banner of a triple safety system Under Yours listing ↗. It is controlled with a remote Under Yours listing ↗.
What it does well
The spray covers glass evenly. BestReviews highlights its dual direction auto spray for even water distribution BestReviews via KTLA ↗. An ultrasonic mist from both directions wets the glass ahead of the pad, which helps lift dirt instead of pushing it around Under Yours listing ↗.
It knows where the edges are. BestReviews says sensors detect edges and obstacles, and the reseller listing adds an air pressure sensor that watches for loss of suction BestReviews via KTLA ↗ Under Yours listing ↗. Stopping the spray near edges should keep water off frames and sills Under Yours listing ↗.
It is versatile. BestReviews recommends it for windows, mirrors and glass doors, and says its suction mimics hand pressure BestReviews via KTLA ↗.
The rated suction is high for the class. 6,400 Pa is a strong figure on paper Under Yours listing ↗. That said, we could not find independent tests that measure how well it cleans or how firmly it holds. Hands on testing on our side is in progress.
Where it falls short
Key safety details are missing. The listing does not give a safety rope rating, a backup battery hold time or a cord length Under Yours listing ↗. Our main pick, the Ecovacs Winbot W2 Pro Omni, lists a safety rope rated to 100 kg and runs on battery or mains power Winbot W2 Pro Omni ↗.
Pads can leave lint. BestReviews notes that the cleaning pads can sometimes leave lint behind BestReviews via KTLA ↗. You may need a final buff with a lint free cloth.
The price is unclear. BestReviews does not list a price for the W5 and links only to Amazon BestReviews via KTLA ↗. The one direct listing we found, from reseller Under Yours, showed $404.49, down from $546.49 Under Yours listing ↗. At that price it costs more than the W2 Pro Omni, which KTLA showed at $342.94 on Amazon BestReviews via KTLA ↗.
No warranty is stated. Neither BestReviews nor the reseller listing mentions a warranty, and the reseller's standard delivery takes 7 to 12 business days BestReviews via KTLA ↗ Under Yours listing ↗.
Pricing and plans
Under Yours listed the Tosima W5 at $404.49, down from $546.49, with a 30 day return window for unused items in original packaging Under Yours listing ↗. BestReviews links to Amazon for current pricing but does not state a price BestReviews via KTLA ↗. Prices from resellers can swing a lot, so check Amazon first.
There is no subscription. Ongoing costs are replacement cleaning pads and water or window cleaner for the tank Under Yours listing ↗. The warranty is not stated, so confirm it with the seller before you buy Under Yours listing ↗.
Who should (and shouldn't) use it
- Good fit: people cleaning mirrors and glass doors indoors, where a fall is less of a risk BestReviews via KTLA ↗.
- Good fit: shoppers who find it well below $300 with easy returns BestReviews via KTLA ↗ Under Yours listing ↗.
- Skip it if: you clean high or outside windows and want a rated safety rope and stated backup battery Under Yours listing ↗ Winbot W2 Pro Omni ↗.
- Skip it if: you want a known brand with a stated warranty and US support Under Yours listing ↗ Winbot W2 Pro Omni ↗.
Alternatives worth a look
- Ecovacs Winbot W2 Pro Omni: our main pick, battery or corded, with a 100 kg rated safety rope and a carry station Winbot W2 Pro Omni ↗.
- Ecovacs Winbot Mini: our budget pick for small windows, mirrors and shower doors Winbot Mini ↗.
- Ecovacs Winbot W3 Omni: our upgrade pick for homes with lots of large glass Winbot W3 Omni ↗.
- HOBOT SP10: a well regarded HOBOT model for framed and frameless glass HOBOT SP10 ↗.
Where it appears
ComparedThe Best Window Cleaning RobotWhat’s good
- Versatile
- Safety sensors
- Auto spray
What to know
- Pads can leave lint
- Price not stated
Key features
- Dual direction auto spray
- Edge and obstacle sensors
- Triple safety system
Questions people ask
How much does the Tosima W5 cost?
Reseller Under Yours listed it at $404.49, down from $546.49 Under Yours listing ↗. BestReviews links to Amazon but gives no price BestReviews via KTLA ↗.
How strong is the Tosima W5's suction?
The listing rates it at up to 6,400 Pa of variable frequency suction Under Yours listing ↗.
Is the Tosima W5 safe on high windows?
It has an anti drop air pressure sensor and edge detection, but no rope rating or backup battery time is published, so use extra care on high glass Under Yours listing ↗.
Does the Tosima W5 leave streaks?
BestReviews says the pads can sometimes leave lint behind BestReviews via KTLA ↗.
Where this comes from
Checked Oct 9, 2026. Vendor pages describe their own products; independent sources add outside views. Hands on testing is in progress.
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