What Size Converter for a Dishwasher?
Helvis Smoteks
The short answer
For a dishwasher, a converter isn't really the answer. A dishwasher combines a pump motor, a big heating element and an electronic control board — and the motor and controls are tuned to frequency, which a transformer can't change. On the wrong 50/60 Hz a US dishwasher mistimes and strains, and we can't guarantee it will work. Buy one made for overseas — a 220V/50 Hz (or 220V/60 Hz) dishwasher from us.
Set on a specific US dishwasher? Talk to us.
Send us the make and model and we'll tell you honestly whether it's worth converting — and if so, we may be able to source a specialized unit that adjusts both voltage and frequency. Chat with Sam, email, or call.
Check your destination's power
Voltage, frequency and the plug all change depending on where you land. Open your region to see what you're dealing with — and the verdict for a dishwasher.
Why we recommend buying a 220V dishwasher, not converting
People assume a dishwasher is a simple pump appliance, but the pump motor draws only 200–400 W — the real electrical load is the heating element that heats the wash water and drives the heated-dry cycle, pulling 1,200–1,800 W for long stretches. On top of that, the motor and electronic controls are tuned to 60 Hz. A transformer can match the voltage, but it can't fix the frequency — so cycle timing and the pump run off, and we can't guarantee it will work. For a built-in appliance you'll use daily, a native 220V/50 Hz (or 220V/60 Hz for overseas) dishwasher from us is the better decision.
If you already own a US dishwasher — what size converter?
If you want to try, here's the honest sizing — with the caveat that on the wrong frequency some dishwashers run (with a shortened life) and some won't run at all. The heating element decides the size: our rule for anything that makes heat is about 3× the heating wattage. A 1,500 W dishwasher wants roughly a 5,000 W transformer; a large heated-dry model runs past a practical transformer size — which is where buying native makes more sense.
Recommended transformer size
| Dishwasher type | Peak load | Dominant load | Transformer size |
|---|---|---|---|
| Compact / slimline (18") | 1,000–1,300 W | Heater | 3,000–5,000 W |
| Standard (24") | 1,300–1,600 W | Heater | 5,000 W |
| Large / heated-dry / high-temp sanitize | 1,600–2,200 W | Heater | 5,500 W+ / buy native |
Size to the max nameplate, not the "eco" figure
Many dishwashers advertise a low eco-cycle number. A transformer has to survive the hot-wash and heated-dry peak, which is much higher — always size to the maximum on the nameplate. And remember: with the wrong frequency, we can't promise it'll run at all.
Tell us your dishwasher — we'll give you an honest read
Send the make and model and we'll tell you whether a transformer is worth it — or recommend the right 220V dishwasher, and a custom voltage-and-frequency unit if it exists for your model.
The better move: buy a 220V/50 Hz dishwasher
A dishwasher built for your destination runs at the right voltage and frequency — correct cycle timing, correct heating, no transformer under the counter.
Frequently asked questions
What size converter do I need for a dishwasher?
Ideally none — a dishwasher's motor and controls run off frequency, which a transformer can't change, so we recommend a 220V/50 Hz (or 220V/60 Hz) dishwasher. If you already own a US one, size to about 3× the heating element: roughly 3,000–5,000 W for most models, and beyond a practical transformer for large heated-dry units. Even sized right, with the wrong frequency it may not run at all.
Will my US dishwasher work on a transformer?
We can't guarantee it. On the wrong frequency some US dishwashers run with a shortened life, and some won't run at all. That's why we recommend buying a 220V/50 Hz one from us. Send the model via Chat with Sam for an honest read.
Why is the heating element the deciding factor?
The pump motor draws only 200–400 W, but the water and drying heater draws 1,200–1,800 W. If you do convert, the transformer must be rated for that larger heater load — always size to the nameplate maximum.