The top loader is the most commonly used washing machine in homes. It operates using a tub that sits vertically in the machine, with an agitator in the middle that churns the clothes and water together in order to wash the clothes. You place the clothes in the machine through a lid on the top. Top loaders are not the most efficient types of washing machines as they tend to use more water. They fill the machine to wash the clothes, drain it, fills the machine again with clean water to rinse, drain that, and possibly fill and drain the water a third time before going to spin cycle. The spin cycle on a top loader is slower than that of a front loader, so more water is left in the clothes leading to a longer drying time, which can cost you in energy if you need to use a dryer.