All washing machines vibrate when they reach the spin cycle, but some washers, such as front-loaders, vibrate more than others. The vibration is caused by the high speed at which the drum rotates to wring clothes of water before the complete wash cycle ends. While there's little that can be done to prevent the washer from wobbling entirely, there are ways to quiet the machine and prevent it from trembling out of control.
A washing machine must be placed on a flat surface. An uneven surface only makes a washer unstable and more likely to vibrate and pound the floor when it spins. A concrete slab is an ideal flooring surface for a washing machine. Concrete is able to withstand the vibration and keeps the shock from damaging the flooring structure below. In addition, concrete absorbs the sound, so less noise is heard when the machine runs. Place a 1-inch piece of plywood underneath the washer and dryer when it's not possible to locate the appliance on a concrete slab. The plywood helps reduce both noise and vibration from the washer.
At each corner beneath a washer is an adjustable foot. The foot helps ensure that a washer is stable on all sides. All four feet must securely contact the flooring surface for a machine not to shake and sway from its original position. Check to make sure the washer is level. Use a wrench to adjust the height of each foot by tightening or loosening its bolt until the washing machine is firmly on the ground.
Anti-vibration pads help keep a washing machine from moving when it spins and banging against the floor. You can generally obtain the pads from most appliance stores. You install them beneath the washing machine. Pads serve as a protective barrier between the washer and the floor. Although they won't completely quiet the washer or keep it from vibrating, they might offer some relief.
Front-loading washing machine manufacturers often sell optional pedestals that you can purchase along with the washing machine. The washer sits on top of the pedestals, and bolts help secure the appliance to the component. Although the pedestal won't alleviate all of the vibration and noise, it can lessen these problems. However, the pedestal must be firmly placed on a flat, sturdy surface to minimise vibration. Otherwise, the pedestal will tremble and hit the floor when the washer drum rotates, just as it would if the pedestal wasn't there.