A lot of people pre wash their dishes, and a lot of older dishwashers need some degree of pre washing, though modern ones shouldn’t and it’s more water efficient to run a full load in the dishwasher than to do it by hand. Doing both is the worst of both worlds.
US dishwashers specifically need to have the hot water run at the kitchen tap so that the first fill has hot water. They don’t turn on the heating element for that first gallon and so it is cold water that isn’t doing a heck of a lot.
A lot of people pre wash their dishes, and a lot of older dishwashers need some degree of pre washing, though modern ones shouldn’t and it’s more water efficient to run a full load in the dishwasher than to do it by hand. Doing both is the worst of both worlds.
I can’t wait to have a dishwasher again.
Obligatory dishwasher explanation video from everybody’s favourite fan of latent heat.
https://youtu.be/jHP942Livy0
I love that jazzy guy.
US dishwashers specifically need to have the hot water run at the kitchen tap so that the first fill has hot water. They don’t turn on the heating element for that first gallon and so it is cold water that isn’t doing a heck of a lot.