Bosch Thermotechology’s Greentherm 9000 series high-efficiency gas tankless water heater is the first of its kind, delivering endless hot water on demand, the company states. Also includes a user-friendly, high-resolution color interface and is easy to install, Bosch adds. With its ability to cascade up to 24 units, this sophisticated technology is ideal for commercial installations looking to save time, money and space, Bosch notes.