Rheem is expanding the EcoNet product line it introduced in 2015 by offering integration with the Nest Learning Thermostat. On the Works with Nest platform, the thermostat can communicate with EcoNet-enabled electric and hybrid heat pump water heaters, lowering temperature settings when users are away from home. Gas-enabled water heaters will be added to the program later in the year. Rheem says water heating can account for 20% of a home's energy use, so using smart technology to regulate it can mean an impressive cost savings. The Prestige heat pump water heater with EcoNet and Works with Nest technology offers a 2.45 energy factor and an average 2-year ROI with $4,000 in cost savings over the life of the unit. rheem.com