This is done to save energy. The 1994 Federal Energy Standards required manufacturers to meet energy efficiency standards. Eliminating warm water rinses with hot washes was one step taken. With most washers, the temperature of the hot and warm washes depends on the temperature supplied by the water heater. To change warm water temperature, you have to change the mix of hot and cold at the inlet or faucet.
Some people keep their old washer to wash only pesticide or other contaminated clothes.
Launder pesticide contaminated clothing separately from other clothing. Use a full tub of water for a limited number of garments to maximize residue removal in laundering. Clean washer after use. For additional information, see NebGuide G89-943, Laundering Pesticide Contaminated Clothing . Lint filters can keep stray fibers from settling on items as water is drained from the washer.