Yes, on sealed floors. Modern robots are light and the rollers are soft. The thing to actually watch isn’t the vacuum, it’s the mop — you want a robot that lifts its pad over carpet and doesn’t leave standing water sitting on wood.

Standing water is the real risk

Hardwood doesn’t get damaged by a soft roller passing over it. It gets damaged by moisture sitting on a seam long enough to work into the subfloor. So the mopping spec that matters on wood isn’t pad pressure or water flow, it’s how well the robot controls how wet it leaves the floor and whether it stops mopping when it should.

Look for a robot that lifts its pad when it detects carpet, that lets you set water flow to a low setting, and that returns to the dock rather than parking on the floor with a wet pad underneath it. That last one catches people out — a robot that finishes a mop run and sits on your hardwood is exactly the scenario to avoid.

The side brush is the sleeper problem

Grit is what scratches a finish, not the robot. On some cheap units the side brush spins fast enough to fling small hard debris sideways across the floor instead of sweeping it into the intake. That’s a scratch risk on a soft finish.

Practical advice: pick up construction debris, gravel and litter by hand before you run the robot on a nice floor, keep the roller free of embedded grit, and if you’ve just had work done in the house, wait until the fine grit is cleaned up before you let the robot loose.

Dad’s Take

On wood, mop control matters more than mop power. A robot that leaves the floor damp instead of wet is the one you want.