Washer and dryer dimensions vary significantly based upon the brand, model and capacity. When choosing a washer and dryer, it is best to carefully measure the space designated for the washer and dryer, and choose the laundry set based upon these measurements.
When measuring the dimensions of the space for a washer and dryer, 1 inch should be added to each side for air circulation. This also allows extra space in the event the washer or dryer must be replaced with a unit that has different measurements. At least 6 inches should be added to the depth of the space to allow for door clearance, vents and hookups. If choosing a top-loading machine, 20 inches should be added to the height to allow for door clearance.