3 Things to Know About Robot Vacuums and Thresholds

Robot vacuums struggle with thresholds over 20mm Most models can handle about 20mm of height difference before they get stuck and spin their wheels.

Small wheels and low chassis cause the problem The wheels are small and sit close to the body, so when the front bumper hits a steep rise, the whole vacuum wedges before the wheels can grip.

A tall threshold is like a curb for a tortoise The vacuum’s design makes it helpless against sudden height changes, leaving it spinning instead of climbing.