Washing machines connect to the laundry room with two water supply hoses, a drain hose and an electrical cord for the wall outlet. With a typical home installation, the laundry room is equipped with one set of water valves and a drain pipe. If you need to hook up two washing machines, make a trip to the hardware store for materials that will let you modify the connections to accommodate a pair of washers.
Shut off the water in the laundry room by turning the valve knobs on the wall clockwise until tight.
Fasten the hot water hose from each washing machine to the connectors on the water hose T-valve. Tighten with pliers.
Connect the remaining coupler on the T-valve to the hot water valve in the laundry room and tighten with pliers.
Hook up the cold water hose from each washer to the second T-valve and then attach to the cold water valve in your laundry room.
Slide a round clamp over each end of the 1 1/2-inch diameter Y-hose. Insert the drain hose from each washer into the Y-hose and tighten the clamps with a screwdriver.
Lower the other end of the Y-hose into the drain pipe in the laundry room.
Open the water valves in the laundry room to release water to the two appliances.
Depending on the water supply in your area, water pressure may be diminished when running two washing machines simultaneously. It may take longer for the drums to fill and begin the wash cycle.