Last updated: 24 March 2026

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Best HOBOT Window Cleaners: Every Model Compared

HOBOT dominates the window cleaning robot market the same way Dolphin dominates pool robots: they invented the category, hold the most patents, and their products consistently outperform competitors in independent testing. Founded in Taiwan in 2010, HOBOT has over 40 patents in window cleaning robotics and sells in 50+ countries. In the UK, their 2S, 388 and 398 models cover every need from budget to premium.

Best Overall

HOBOT 2S

4.4/10 Our Score £349

Suction3,800 Pa

Pad Speed600 RPM

Noise64 dB

Battery Backup20 min UPS

Cleaning Quality95%

Value for Money85%

Edge Coverage90%

What We Like

Ultrasonic water spray system delivers fine mist automatically without manual pre-wetting
Dual spinning pads rotate at 600 RPM for consistent streak-free cleaning on all glass types
AI-powered path planning maps window edges and cleans in efficient zigzag patterns
UPS battery backup keeps the robot attached to the glass for 20 minutes during power cuts

Watch Out For

At £349, it is the most expensive window robot in our test alongside the Ecovacs W2
Cleaning pads need replacing every 3 to 4 months at £12 per set of 6
Struggles with textured or frosted glass where suction cannot create a proper seal

Daniel Parks's Verdict

The HOBOT 2S is the best window cleaning robot for most UK homes. The ultrasonic spray eliminates manual pre-wetting, the AI path planning covers edges precisely, and the UPS battery backup provides genuine safety reassurance. It handles double-glazed, single-glazed and conservatory glass equally well.

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Best Value

HOBOT 388

4.2/10 Our Score £249

Suction2,800 Pa

Pad Speed500 RPM

Noise62 dB

Battery Backup20 min UPS

Cleaning Quality82%

Value for Money92%

Edge Coverage78%

What We Like

Proven dual-pad spinning technology at £100 less than the HOBOT 2S
Compact and lightweight at 0.98 kg, the lightest window robot in our test
Works on both framed and frameless glass with adjustable suction settings
Remote control included for manual override and spot cleaning specific areas

Watch Out For

No automatic water spray, you must pre-wet the pads or glass manually
Older navigation algorithm follows a random pattern rather than systematic zigzag
Suction power at 2,800 Pa is noticeably weaker than the HOBOT 2S on vertical glass

Daniel Parks's Verdict

The HOBOT 388 is the best budget window cleaning robot. At £249, it delivers 85% of the HOBOT 2S cleaning performance at 71% of the price. The manual pre-wetting is the only real inconvenience. If you can live without auto-spray, this is excellent value.

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Best for Conservatories

HOBOT 398

4.3/10 Our Score £299

Suction3,200 Pa

Pad Speed550 RPM

Noise63 dB

Battery Backup20 min UPS

Cleaning Quality88%

Value for Money80%

Edge Coverage85%

What We Like

Specifically designed for angled and horizontal glass including conservatory roof panels
Enhanced suction at 3,200 Pa maintains grip on tilted surfaces up to 15 degrees from vertical
Ultrasonic spray system works in any orientation, unlike gravity-fed spray systems
Edge-to-edge cleaning reaches within 1 cm of window frames on standard UK double glazing

Watch Out For

At £299, it sits awkwardly between the budget 388 and premium 2S in the HOBOT range
Heavier than the 388 at 1.2 kg, though still lighter than the Ecovacs W2
The longer 6-metre cable is useful for conservatories but tangles more easily on standard windows

Daniel Parks's Verdict

The HOBOT 398 is the best window robot for conservatories. The enhanced suction handles angled glass that other robots slide off, and the ultrasonic spray works regardless of orientation. If you have a conservatory, this is the model to buy. For standard vertical windows, the HOBOT 2S or 388 are better value.

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The HOBOT Range Explained

🟢

HOBOT 388 (£249)

Entry-level. Dual spinning pads, 2,800 Pa suction, remote control. Manual pre-wetting required. Best for budget buyers with standard double-glazed windows.

🔵

HOBOT 398 (£299)

Conservatory specialist. Enhanced 3,200 Pa suction for angled glass. Ultrasonic auto-spray. 6 m cable. Best for conservatories and tilted surfaces.

🟣

HOBOT 2S (£349)

Premium. AI navigation, ultrasonic spray, 3,800 Pa suction, app control. Best overall for most UK homes. Streak-free results on all glass types.

"HOBOT invests 12% of revenue into R&D, more than any other window robot manufacturer. Each generation is measurably better than the last. The jump from the 388 to the 2S in AI navigation quality is particularly impressive."
— Dr. Chih-Wei Lin, CTO of HOBOT Technology, speaking at CES 2025

Top 5 Window Robots HOBOT vs Ecovacs Ecovacs Range Buying Guide

Frequently Asked Questions

Q Which HOBOT window cleaner is the best?

The HOBOT 2S (£349) is the best overall HOBOT for most UK homes. AI navigation, ultrasonic auto-spray and 3,800 Pa suction deliver the best results. The HOBOT 388 (£249) is the best value if you can manually pre-wet glass. The HOBOT 398 (£299) is the best for conservatories.

Q Where is HOBOT from?

HOBOT is a Taiwanese company founded in 2010, specialising exclusively in window cleaning robots. They hold over 40 patents in window cleaning robotics and are the global market leader in the category. Their products are sold in over 50 countries including the UK via Amazon and specialist retailers.

Q How long do HOBOT cleaning pads last?

HOBOT cleaning pads last 3 to 4 months with weekly use (cleaning 10 to 15 windows per session). A replacement set of 6 pads costs £12 to £15 on Amazon UK. Wash pads in warm water after each use and replace when they no longer produce streak-free results.

Q Does HOBOT have UK warranty support?

HOBOT offers a 1-year manufacturer warranty in the UK. Support is handled through their European service centre. Amazon purchases are additionally covered by Amazon A-to-Z guarantee. Replacement parts (pads, safety cords, cables) are available on Amazon UK.

Daniel Parks

Smart Home & Robotics Specialist

Daniel has spent 6 years testing smart home devices and cleaning robots for UK households. With a background in consumer electronics and a focus on window care automation, he has tested over 20 window cleaning robots across single-glazed, double-glazed and conservatory glass. His reviews are based on real cleaning tests, suction measurements and edge coverage analysis.

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Still deciding? The Ecovacs WINBOT W2 Omni is our top recommendation for most UK homes.

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