The Bosch Greentherm 9000 Series offers nine models for high-efficiency domestic hot water in residential or commercial applications with features for easy installation, operation and maintenance. The Greentherm 9000 Series features a Uniform Energy Factor of 0.96. This series achieves temperature stability of plus or minus 2° F through the active bypass, according to Bosch. Furthermore, its advanced technology controls output capacity, optimizing comfort and efficiency by combining the burner's pulsating mode with the bypass valve to achieve the desired outlet temperature, even at low flow rates.

Its wide operating range – between 9,000 and 199,000 Btu, saves energy when hot water demand is low, the company notes. The premium 9900i SE model has a unique, stylish glass front and integrated Wi-Fi control – also an option on other models – enabling the homeowner to control the water heater remotely via a free mobile app. The Wi-Fi module communicates with the app to provide operating performance information to the user, and sends any alerts directly to a compatible smartphone. Outdoor models feature a concealed, built-in controller with optional Wi-Fi connectivity. Each model offers simple conversion to LPG using the included manifold injector kit, which eliminates stocking both LP and NG units, thus saving the wholesaler’s inventory cost.