As of 2015, appliance stores such as Best Buy and The Home Depot offer consumers the option to purchase compact, stackable washer and dryer units separately. Apartment residents often prefer these washer and dryer units because they take up less space and are easier to transport up stairs.
Apartment residents that purchase separate washer and dryer units must also purchase a kit if they wish to stack them. Stacking kits are suited to particular brands and models. For instance, Best Buy offers an LG stacking kit for most 27-inch LG washers. Due to the weight of these appliances and their many moving parts, safety should be a concern during the installation process.