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How many watts does a robot vacuum use? (30 W)
A robot vacuum uses about 30 W
Typical range 20–90 watts, plus ~2 W on standby.
Typical range 20–90 watts, plus ~2 W on standby.
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A robot vacuum runs on a small battery, so its real energy use is the charging dock topping up between cleans.
Robot vacuum power specs
| Typical running power | 30 W |
| Typical range | 20–90 W |
| Standby draw | 2 W |
| Energy use | 0.04 kWh/day · 1.3 kWh/mo |
What affects a robot vacuum's wattage
A robot vacuum is rated around 30 W, but the real figure shifts with a few things:
- Model and rating: A robot vacuum ranges from about 20 W on efficient units to 90 W on larger or older ones — a spread of ~70 W.
- Usage: the real draw depends on the water temperature you pick — heating water, not the motor, drives the draw.
- Standby: even idle it keeps drawing ~2 W, which quietly adds up over a year.
- Run time: because a robot vacuum typically runs about 1.5 h/day, hours of use matter as much as raw wattage on your bill.
Running cost at $0.17/kWh
| Electricity rate | Per day | Per month | Per year |
|---|---|---|---|
| $0.10/kWh | $0.00 | $0.13 | $1.64 |
| $0.15/kWh | $0.01 | $0.20 | $2.46 |
| $0.20/kWh | $0.01 | $0.27 | $3.28 |
| $0.25/kWh | $0.01 | $0.34 | $4.11 |
| $0.30/kWh | $0.01 | $0.40 | $4.93 |
| $0.40/kWh | $0.02 | $0.54 | $6.57 |
See the full breakdown of what it costs to run a robot vacuum, or what size power station runs a robot vacuum.
FAQ
How many watts does a robot vacuum use?
Around 20-90 watts while charging; very little over a full day.
Does the dock waste power when idle?
Only a couple of watts to keep the robot topped up - negligible on your bill.
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