The Viega SmartLoop system helps maintain water quality by reducing water stagnation. Ideal for use in multistory commercial applications, SmartLoop uses a supply riser to insulate the internal recirculation line tubing and keeps water hotter longer. Water within the system remains in constant motion, reducing the risk of waterborne pathogens. The system offers energy- and water-consumption savings potential of up to 40%. SmartLoop installation requires no separate return pipe, uses less insulation and uses fewer fittings, supports, penetrations and core drilling than a conventional recirculation installation.