Two washing machines clean the same way in principle, but move the clothes very differently. Use the buttons to compare a deep-tub pulsator washer with a tumbling drum washer.
A top-load washer is loaded from above and washes in a deep tub. A front-load washer is loaded through a glass door and washes in a shallow pool. Both use water, detergent and movement, but they get the clothes clean in two different ways.
The difference comes down to how the load is moved. One stirs the water; the other tumbles the clothes.
Side by side, the two designs explain a lot about everyday washing: why one uses more water, why one is gentler, and why one needs heavy springs and dampers around its drum.
Two ideas matter most: a top loader cleans by friction in a deep pool, while a front loader cleans by lifting and dropping clothes through a shallow one.
The top loader fills its tall basket to a high water line so the whole load is soaked. The front loader only needs a shallow pool, because it does not rely on the clothes being submerged.
At the bottom of the top-load basket, a bladed pulsator turns back and forth. It drives a strong swirling current that keeps the whole load moving and rubbing in the water.
The front loader turns its whole drum slowly. Three lifters catch the clothes, carry them up the side and let them fall back through the shallow water below.
The top loader cleans mainly by friction, as clothes rub against each other and the basket. The front loader cleans by the tumbling drop, so the load is handled more gently and with less wear.
Because it uses a deep pool, the top loader generally uses more water; the front loader uses less and is usually gentler. The front loader's fast spinning drum also means it needs springs on top and dampers below to keep the shaking under control.
A top-load washer cleans in a deep tub by stirring the water with a pulsator, so the clothes rub against each other. A front-load washer cleans by tumbling the clothes and dropping them through a shallow pool of water.
A front-load washer. Because it lifts and drops the clothes instead of soaking them in a full tub, it usually needs only a shallow pool, so a front loader typically uses far less water per load.
A front-load washer is usually gentler. Its clothes are lifted and dropped rather than rubbed against each other and the tub wall, so there is generally less friction and wear.
Because it fills with water. The tall basket holds a deep pool and lets the pulsator drive a strong swirling current that keeps the whole load moving in the water.
The drum spins fast during the final spin. Springs at the top and dampers at the bottom hold the tub in place while letting it move a little, so the vibration does not shake the whole machine.
A top-load washer usually finishes a cycle sooner, because a front loader spends longer heating a smaller amount of water and tumbling gently. The slower front-load cycle is part of why it uses less water and is gentler.