Dual-Arm Humanoids Achieve Streak-Free Residential Window Cleaning in Real-World Trials

Keeping exterior glass sparkling clean is a tedious household chore that usually involves dripping soapy water and frustrating streaks. Fourier Intelligence and Unitree Robotics are stepping up to solve this problem by bringing advanced squeegee techniques to the consumer robotics market. The Fourier GR-2 and Unitree G1 have recently mastered streak-free exterior window squeegee application and telescopic wand scrubbing. These dual-arm humanoids are proving they can handle challenging residential multi-pane bay windows with the grace of a professional window washer.

Operating in a coastal Sydney neighbourhood where sea salt builds up quickly on glass, the robots showcased exceptional wrist articulation. The Unitree G1 used its primary arm to scrub away stubborn dirt with a microfibre telescopic wand, applying just the right amount of detergent. Immediately following, the Fourier GR-2 applied a heavy-duty squeegee to the wet glass. By maintaining a constant, calculated pressure and a precise forty-five-degree angle, the GR-2 pulled the soapy water down the pane in a single fluid motion. Its vision system actively scanned the glass for missed spots, allowing the robot to wipe the blade clean before starting the next pass.

Achieving a truly streak-free finish requires a very specific touch that has historically confused rigid robotic arms. The compliant joints in both the GR-2 and G1 allow them to absorb the slight variations in standard glass panes without scratching the surface. For homeowners, this means waving goodbye to dangerous step stools and messy buckets of water. Having a humanoid capable of maintaining crystal clear windows year-round is an absolute game changer for suburban property maintenance.