A washer dryer is a household appliance that combines the functions of a washing machine and a clothes dryer into one unit. It allows users to wash and dry their laundry without needing to transfer clothes between two separate machines. This can save space and time, making it a convenient option for small homes or apartments. Washer dryers typically have various settings for different fabric types and load sizes. They can handle both washing and drying cycles, often with the ability to adjust drying times based on the moisture level of the clothes. This versatility makes them popular among those looking for efficiency in laundry care.