How loud is it at 3 a.m.?

The robot’s best trick is working while you sleep. Naturally the next question is whether the neighbors will be sleeping too. Here’s what we can and can’t tell you.

The number nobody publishes

Yarbo doesn’t list a decibel rating for the Snow Blower module. Retailers that carry it quote “70 dB or under,” and Yarbo’s own comparison is that it runs roughly 70 percent quieter than a gas snow blower, which typically pushes past 85 dB at the operator’s ears. We haven’t measured it with lab equipment, so take the retailer figure as a reasonable ballpark rather than gospel.

For scale: 70 dB is a dishwasher in the next room, or a normal conversation at arm’s length. A gas two-stage is a lawn mower you’re standing on. Through a closed window, what you’ll hear from the robot is a steady electric hum with a soft rush when snow leaves the chute. There’s no engine.

What the neighbors actually notice

In our experience it isn’t the sound. At 3 a.m. the plow truck with its reversing beeper is the loud thing on the street, and the robot is quieter than the wind in a nor’easter. What neighbors notice is where the snow goes. That’s a mapping decision, not a noise decision: we set throw zones so nothing lands on the property line, the shared driveway, or their car.

Quiet hours and HOAs

Plenty of neighborhoods in Howard County, Montgomery County, Chester County, and most of the Denver suburbs have HOA quiet hours, typically something like 10 p.m. to 7 a.m. Two things help:

1. Quiet mode. The app has a quiet setting alongside its normal and turbo modes. We schedule quiet mode overnight and normal mode by day. Quiet mode moves a little less snow per pass, which the robot makes up for by making more passes.
2. The letter. If your HOA’s rules mention powered equipment hours, we’ll give you a one-page description of the system to share with the board. Most boards, once they realize it replaces a gas blower and a plow truck, are enthusiastic.

When it’s louder than it should be

A robot that suddenly sounds different is telling you something. Owners on Yarbo’s forum have described squealing or grinding that turned out to be a belt or gearbox issue. On a managed plan, a change in sound is a service call, and monitoring often catches the underlying fault first. If you’re an owner, the two-minute checklist is the place to start.

The honest summary

Quieter than anything else that clears a driveway, not silent. Nobody has complained to us about the sound. Several people have complained to us about the plow truck, and that’s rather the point.