Most machines establish water temperatures by mixing hot and cold water in preset proportions. Most washers automatically set the wash speed according to the fabric cycle selected. Most machines also provide at least three wash-spin speed combinations. A porcelain-coated steel tub may rust if the porcelain chips or if water sits in the tub too long. A stainless-steel or plastic tub doesn't present the same problem.
Most machines also have a painted surface, which is easily scratched.
A porcelain-coated top surface is preferable. Regular detergents can suds too much in a front-loader, inhibiting the machine's cleaning and rinsing action. Special front-loader detergents, including Tide and Wisk , are available most places you'll find regular detergents. Even without the rebates often available with efficient washing machines, the best front-loaders we tested may make economic sense. They offer excellent washing, fine efficiency and low noise.