What Size Generator for a Washing Machine?
A 3,400W inverter runs a washing machine: plan on 1,000 running watts with a 2,300W start when the motor kicks into spin. Cold-wash only, though; the moment an electric water heater or an electric dryer joins the laundry math you're in 240V territory and a much bigger class.
Wattage by type
| Washing machine type | Running | Starting |
|---|---|---|
| Front-loader, cold wash | 500 to 800 W | 1,200 to 2,000 W |
| Top-loader (planning number) | 1,000 W | 2,300 W |
| Washer + gas dryer (motor only) | 1,700 W | 3,000 W |
| Electric dryer (240V, for reference) | 5,400 W | 6,750 W |
What it takes with company
Same engine as the wattage picker: running total plus the single biggest start spike, then the smallest class that carries it with 20% headroom.
| Load list | Running | Peak | Buy |
|---|---|---|---|
| Washer alone, cold wash | 1,000 W | 2,300 W | 3,400W inverter |
| Washer + fridge + the basics | 1,900 W | 3,400 W | 3,400W inverter |
| Washer + gas dryer + the basics | 1,900 W | 3,200 W | 3,400W inverter |
The details that change the answer
Laundry during an extended outage is a quality-of-life call, and on the washer side it's a cheap one: a cold cycle on a modern front-loader is mostly a motor turning a drum, well within a 3,400W inverter beside the fridge. The spin-up is the spike to plan for, and top-loaders with old-style motors spike hardest, which is where the 2,300W planning figure comes from.
Hot water and drying are where laundry gets expensive. A washer's "hot" setting pulls from the water heater: fine if yours is gas, a 4,500W problem if it's electric. An electric dryer is 240V and 5,400W sustained, which alone commands a 7,500W generator with an L14-30 outlet; a gas dryer's drum motor is 700W and changes nothing. During outages, wash cold and line-dry, and the whole chore fits on the storm-basics generator you already sized.
Questions people ask
Can I run a washer and dryer on a generator?
Washer plus gas dryer, easily: about 1,700 running watts combined, a 3,400 to 3,500W class with the start spikes counted. Washer plus electric dryer means 240V and roughly 6,400 running watts before the fridge, which is a 7,500W open-frame portable at minimum. For outage laundry, cold wash and a clothesline make the small generator the right answer.
Why does the generator bog when the washer starts spinning?
The spin-cycle ramp is a series of motor surges, not one clean start, and each one leans on the peak rating. If the unit bogs, the running load underneath (fridge, lights, whatever shares the cord) has eaten the margin. Shed a load during spin or size up one class; the washer itself is behaving normally.