The Hot-LinkPlus-e recirculation system from Taco Comfort Solutions offers high-efficiency, intelligent domestic hot-water recirculation ideal for retrofit applications. A dedicated return line is not required. It combines a 006e3 ECM hot-water circulator with a Hot-Link Valve and SmartPlug Instant Hot Water Control in one easily installed package. The Hot-Link Valve, installed at the building’s farthest water fixture, sends cooled water back to the water heater so hot-water lines remain hot. The circulator that comes in the package uses up to 85 percent less electricity than a conventional circulator. It has three performance curves to best match the application and a setting selection guide to make the choice simple. The Smart Plug learns hot-water usage patterns and delivers hot water when it’s needed, reducing energy use and extending the life of the water heater. 401-942-8000; www.tacocomfort.com.