Designed for systems with dedicated hot water return lines, Taco’s SmartPlus circulator combines the reliability of its 00 line with cutting edge electronics to achieve efficient domestic hot water recirculation. When set to “smart” mode, the SmartPlus circulator records each time hot water is called for during a seven-day period and then duplicates the pattern for the following week. This energy saving process occurs constantly, so hot water is ready when needed. With SmartPlus, the average household can save up to 12,000 gallons/year.