Watts Regulator Company has introduced the Boiler Energy Saver (BES). The Boiler Energy Saver reduces energy costs by automatically monitoring and adjusting residential hydronic boiler water temperature. Lowering boiler water temperature during warm weather reduces standby heat loss and increases occupants' comfort by circulating water at lower temperatures on warm days. Wiring is low voltage and done at the boiler, and no outdoor sensor is required. The BES is compatible with all low voltage thermostats. It provides priority for domestic hot water systems. Watts Regulator Company.