Nine tankless condensing gas water heaters
Bosch Thermotechnology Corp. offers nine tankless models for high-efficiency hot water in residential or commercial applications with its Bosch Greentherm 9000 Series. Featuring an energy factor of 0.99 with thermal efficiency of 100 percent, the condensing gas water heaters achieve temperature stability of plus- or minus-2 F through active bypass. Installation permits up to 60 ft. of venting with 2-in. pipe or 280 ft. of venting with 3-in. pipe. Series models feature sleek, rounded corners on the metal cabinet and an optional Wi-Fi control can provide remote controls via a free mobile app [the premium 9900i SE model already features Wi-Fi control].