HUTT S55 Pro review

What the HUTT S55 Pro is

The S55 Pro is a window cleaning robot from HUTT, a brand that sells several suction based window robots. It sticks to the glass with a vacuum seal, sprays cleaning solution, and wipes the pane in a planned pattern while you watch from the floor Smart Robot Reviews HUTT comparison ↗ High rise robot roundup ↗.

Unlike premium models such as the Ecovacs Winbot W2 Pro Omni, it has no station that doubles as a carry case and control panel Smart Robot Reviews guide ↗ Ecovacs W2 Pro Omni ↗. Smart Robot Reviews ranks it fourth in its window robot guide and calls it the best standalone value Smart Robot Reviews guide ↗. Its HUTT comparison names it the best value in HUTT's current US lineup, below the A1 as best overall Smart Robot Reviews HUTT comparison ↗.

We could not find a HUTT product page for it, so details come from review sites. Hands on testing is in progress.

What it does well

Planned cleaning paths. It uses SLAM 4.0 navigation to plan its route Smart Robot Reviews guide ↗ Smart Robot Reviews HUTT comparison ↗. One roundup says it cleans in a systematic Z pattern rather than wandering High rise robot roundup ↗.

Strong suction. HUTT claims up to 6,500 Pa, which is at the top of its range Smart Robot Reviews HUTT comparison ↗ High rise robot roundup ↗. Higher suction helps the robot stay put on large panes.

Even pad contact. The 3D floating pads sit on springs so they keep pressure on the glass, and the robot is said to adjust pressure in real time High rise robot roundup ↗. It comes with 6 cloths High rise robot roundup ↗.

Fine spray. The HydroJet pump sprays a mist from an 80 ml tank, so you do not have to pre wet the window Smart Robot Reviews guide ↗ High rise robot roundup ↗.

Light and simple. It weighs about 2.6 pounds and runs from buttons and a remote High rise robot roundup ↗.

Safety basics. A roundup lists an emergency backup battery that keeps it attached if power is cut, plus a safety rope High rise robot roundup ↗. Neither the rope rating nor the backup time was stated.

Where it falls short

Unconfirmed safety numbers. For upper floor windows, the rope rating and backup battery time matter most. Ecovacs publishes both for its Winbots, such as a 100 kg rope and more than 30 minutes of backup hold on the W2 Pro Omni Ecovacs W2 Pro Omni ↗. We could not find the same figures for the S55 Pro.

No station or automatic pad care. You rinse pads by hand and carry the robot, its cable and the remote yourself Smart Robot Reviews guide ↗.

Edges and corners. One roundup says edge cleaning may leave small streaks and that it may not reach tight corners or deep frames High rise robot roundup ↗. Smart Robot Reviews says it has no explicit support for frameless or outdoor glass Smart Robot Reviews guide ↗.

No app, and a fussy remote. Control is by remote and buttons only, and the remote can be slow to respond. Fitting the pads can also be tricky High rise robot roundup ↗.

Thin brand support. Smart Robot Reviews notes a smaller ecosystem than Ecovacs Smart Robot Reviews guide ↗. HUTT's model names also change often, and some older models could not be verified in US stores Smart Robot Reviews HUTT comparison ↗.

Expect it to be slow and loud. In a Swiss test of HUTT's cheaper DDC55PRO, Galaxus timed just over 17 minutes for a 4.18 square meter window and measured 74.6 dB Galaxus HUTT test ↗. That test did not include the S55 Pro, but it is a useful guide to the brand.

Pricing and plans

Retail price: not confirmed. Review sites link to Amazon for current pricing but do not state a figure Smart Robot Reviews guide ↗ Smart Robot Reviews HUTT comparison ↗ High rise robot roundup ↗. Smart Robot Reviews says it costs much less than premium station models Smart Robot Reviews guide ↗. For context, the Ecovacs Winbot mini lists at $239.99 and the W2 Pro Omni at $499.99 Ecovacs W2 Pro Omni ↗ Ecovacs Winbot mini ↗.

Where sold: Amazon US Smart Robot Reviews guide ↗.

Warranty: not stated in any source we could open. Check the Amazon listing and seller before buying.

Ongoing costs: replacement cloths and cleaning solution. It ships with 6 cloths High rise robot roundup ↗. There is no subscription.

Who should (and shouldn't) use it

• Good fit: apartment owners with large, flat panes who want a planned cleaning path without paying for a station.
• Skip it if: you clean high outside windows and want published safety rope and backup ratings.
• Skip it if: you have frameless glass, deep frames or lots of small panes.
• Skip it if: you want automatic pad washing or a carry station.

Alternatives worth a look

• Ecovacs Winbot W2 Pro Omni: our top pick, with a 100 kg safety rope, 30 minute backup hold and a carry station; it has sold for $399 on Amazon Ecovacs W2 Pro Omni ↗ 9to5Toys ↗.
• Ecovacs Winbot mini: $239.99 list, works on panes as small as 22 by 25 cm and includes a rated safety rope Ecovacs Winbot mini ↗.
• HUTT A1: HUTT's own step up, with laser sensing and high rise positioning, at a higher price than the S55 Pro Smart Robot Reviews HUTT comparison ↗.