Most (all?) washing machines are 120V. Electric dryers rarely are, because they need a lot more power. I had a small washer/dryer combo unit years ago that used 120V, and it took about four hours to dry a load that was about half the size of a normal dryer’s capacity.
Running both voltages into a house isn’t much of a burden. Residential electricity in the US is two-phase. A 120V circuit pulls from one phase, with the various circuits in your house divided between them to even out the load. A 240V circuit just connects to both phases.
Electric stoves and dryers are connected 240V, yes. Washers are typically only 120V because they only really have to power the motor - unlike in Europe, the washer has hot and cold water inputs, so it doesn't need to use a lot of energy heating the water.
I get the sense some of these posts are talking about devices connected directly to the building's supply wiring (not to a receptacle downstream of the circuit breaker panel).
In the US all residential washing machines are 110V, as are gas dryers, but electric dryers take 220V.
Driers, and similar high power appliances, don't use a single 120V phase. They use two phrases, 180 degrees apart in normal residential houses and 120 degrees apart in apartment buildings. Any American clothing dryer I've ever seen has 240V (slightly less in apartment buildings.)
No. Most US houses have, at most, a single 240V outlet in the laundry room for an electric dryer. Literally everything else is 120V. There is almost no household equipment other than drying machines that is sold taking a 240V plug.
Electric cars may change this. They haven't yet, at least not much.
That's not it. Electric dryers in the US are overwhelmingly 240V and on a 30A breaker. At 80% of rated, that's 5.7kW available. (Gas dryers here are typically on a 120V, 15A circuit.)
Every heat pump dryer I looked at on the home center's website is 240V. (Edit: I found one Miele on another home center that was a 15A@120V.)
Funnily enough that's a normal practice in the UK/Ireland. In all the places I've lived, washer and dryer are plugged straight into a regular outlet (sometimes with an extension cord if it can't be reached).
Makes me wonder, why not make a 110v washing machine and save the trouble of having both 110v and 220v at home?
Not quite - the US has a unique split neutral where an incoming 240V single phase is divided into +/- 120V to drive either 120V to earth or 240V heavy duty appliances. But the dryer supply in the US isn't a multi phase
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