4 Signs It’s Time to Replace Your Robot Vacuum’s Brush Roller

Bristles are bent, frayed, or missing Inspect the brush roller monthly. If bristles are permanently bent, frayed, or have chunks missing, replace it immediately.

The brush doesn’t spin freely If the roller is stiff or makes grinding noises when you spin it by hand, it’s worn out and needs replacing.

You see grooves worn into the rubber or plastic Visible wear on the roller’s surface reduces cleaning performance and can damage your floors.

Cleaning performance has dropped noticeably A worn brush roller means worse pickup, more noise, and extra strain on the motor. A new one costs $10–20 and is cheap insurance against burning out the vacuum.