Cleaning windows used to mean ladders, squeegees, and half an hour of effort — only to end up with streaks. Window cleaning robots have changed everything. Set it on the glass, press a button, and let it work while you do something else.
But not every robot is built equal. Some struggle at corners, some run out of battery halfway through, and some simply don't have the suction power to stay attached to the glass safely. Choosing the wrong one can be a costly mistake.
We tested the most popular window cleaning robots available in the UK so you don't have to. Read on to find our ranked results — or skip straight to the full review of our #1 pick at the bottom of the page.
Compare the top 4 window cleaning robots side by side
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🥇 #1
Purco V3 £149.90 |
HOBOT £225 |
Kärcher £239 |
FMART £191 |
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|---|---|---|---|---|
| Overall Rating | 9.8/10 | 9.1/10 | 8.8/10 | 8.5/10 |
| Price | £149.90 | £225 | £239 | £191 |
| Suction Power | 2800 Pa | 2600 Pa | 2400 Pa | 2200 Pa |
| Backup Battery | ✓ 30 min | ✓ 20 min | ✗ | ✗ |
| AI Path Planning | ✓ Auto | ~ | ✗ | ~ |
| Spray Function | ✓ | ✓ | ✓ | ✓ Dual |
| Anti-fall Safety | ✓ Edge detect | ✓ | ✓ | ~ |
| Weight | Lightweight | Average | Heavy | 1.3 kg (Light) |
| Cleaning Speed | 1m²/2 min | 1m²/3 min | 1m²/3 min | 1m²/4 min |
| Warranty | 90 days | 14 days | 14 days | 14 days |
If you've ever spent an afternoon balancing on a stepladder with a squeegee and a bucket, you already know how frustrating window cleaning can be. The streaks, the missed patches, the sore arms — it's one of those chores that feels like it takes forever and still doesn't look great when you're done.
Window cleaning robots promised to change all that. But the early models were slow, noisy and unreliable — half of them fell off the glass within weeks. The technology has moved on fast, and the gap between the best and worst models is now enormous.
One robot stood out across every test we ran: the Purco V3. With a rapidly growing following and some of the strongest suction figures we've seen at this price, we had to see whether it truly delivers.
The Purco V3 arrived well packaged with the robot unit, safety cable, remote control, spray bottle, two microfibre cleaning pads and a quick-start guide. Setup took under a minute — attach the cable to the anchor point, place the robot on a clean dry section of glass, and press the power button. It locks on immediately and begins mapping.
Our team tested the Purco V3 across a full week on multiple window types — standard double-glazing, large patio doors, bathroom mirrors, and shower glass. Here's how it performed on the factors that matter most:
The Purco V3 is the easiest recommendation we've made. It combines 2800 Pa suction, AI path planning, a 30-minute backup battery and a dual-disc cleaning head into a slim, lightweight unit that sets up in under a minute. At £149.90 — less than the HOBOT or Kärcher — it represents exceptional value without any compromise on performance. With the current 49% discount applied, there's no better time to buy.
You can order the Purco V3 directly from the official Purco store. Stock tends to sell out quickly — especially during promotions — so don't wait too long.
Click HERE to visit the official Purco store and claim your discount
Still not sure? The Purco V3 comes with a 90-day money-back guarantee — no questions asked. Try it on every window in your home and return it for a full refund if you're not completely satisfied.
What stands out most about the Purco V3 is the consistency of the feedback from real buyers. Hundreds of customers highlight the same things: the powerful suction, the intelligent navigation, and the relief of never having to clean windows by hand again.
"I was dreading cleaning my floor-to-ceiling windows. Set this up in 30 seconds, let it run, and every pane was spotless. Genuinely one of the best purchases I've made this year."
"Bought it after comparing it to the Kärcher. Same results, £90 cheaper. The AI navigation is surprisingly smart — it didn't miss a single corner."
"The backup battery feature is what sold me. Knowing it won't drop off the window if the power flickers gives me total peace of mind. Works perfectly on my shower doors too."
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Every product we feature goes through hands-on evaluation by our team. We score based on real-world suction, cleaning speed, ease of use, safety features, value for money and after-sales support — not sponsored rankings.
Your peace of mind matters — that's why we only feature companies with safe, secure ordering systems you can trust.