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Comparison Hutt A1 vs Hutt W9

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Hutt A1
Hutt W9
Hutt A1Hutt W9
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Drop protection when unplugged.
Drop protection for 20 minutes when unplugged.
Typewindow robotwindow robot
Specs
Performance4 min/m²2 min/m²
Suction power6000 Pa3800 Pa
Detergent solution tank150 ml150 ml
Power sourcemainsmains
Backup power20 min20 min
General
In box
remote control
 
Cable length6 m
Dimensions (H×W×D)8.2x26.2x26.2 cm8.2x24.2x24.2 cm
Weight1.6 kg
Added to E-Catalogjanuary 2025january 2025
Compare Hutt A1 and W9
Window robots Hutt A1 and Hutt W9 have similar features, such as mains power supply and a 0.15 L cleaning solution tank. Both devices operate on lithium-ion batteries with a runtime of 20 minutes. However, the A1 offers fall protection when disconnected from the mains, while the W9 provides protection for 20 minutes after disconnection. The dimensions of the A1 are 26.2x26.2x8.2 cm, while the W9 is more compact at 8.2x24.2x24.2 cm.
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Glossary

Performance

The nominal processing time for 1 m² of glass helps assess the operating speed of a window-cleaning robot: the lower the value in min/m², the faster the pass. For example, at 2.5 min/m², a surface measuring 4 m² will require about 10 minutes, excluding a repeat cycle, repositioning the device, and preparing the cleaning cloths. Models are best compared in identical modes, since the result is affected by the route, degree of contamination, and number of passes.

Suction power

Suction power determines how reliably the window-cleaning robot adheres to the glass. A higher value helps maintain grip when moving over joints, minor irregularities, or areas where the cleaning pad does not fit tightly. However, stronger suction does not guarantee better removal of stains and streaks—the result also depends on the cleaning pads, liquid dispensing, and route. Regardless of the stated pressure, the robot should be secured with a safety tether.

In box

Additional nozzle. The second, narrower suction nozzle is designed for tight areas where using the main working edge is inconvenient. It makes it easier to clean small window sashes, sectional frames, and narrow mirrors.

Sprayer. A hand sprayer with a reservoir for water or cleaning solution that evenly wets the glass with fine droplets. It helps soften dried-on dirt and prepare the surface for wiping and subsequent collection of the liquid by the window vacuum.

Extension pole. A telescopic or sectional handle that increases the operating range of the window vacuum or the device used to apply cleaning solution. It allows you to clean the upper areas of tall windows, glass partitions, and other hard-to-reach surfaces from the floor, without a stepladder.

Remote control. Allows you to start, stop, and direct the window-cleaning robot without a smartphone. The set of commands varies by model, but a separate remote is convenient for quick local control and does not depend on mobile app compatibility.

Cable length

The cable length determines whether the corded window-cleaning robot can reach the farthest part of the glass without straining the wire. When calculating, account for the route from the outlet and adapter to the window, and arrange any excess cable so that it does not interfere with movement or the safety rope.