A tumble dryer is an appliance used to dry clothes after washing. It works by tumbling wet laundry in a rotating drum while blowing hot air through it. This process helps to evaporate moisture, leaving clothes dry and ready to wear. Tumble dryers come in various types, including vented, condenser, and heat pump models. Vented dryers expel moist air outside, while condenser dryers collect water in a tank. Heat pump dryers are energy-efficient, using lower temperatures to dry clothes. Many models also offer different drying programs to accommodate various fabric types.