THE GREENTHERM CONDENSING TANKLESS WATER HEATER is offered in two new models, the C1050 ES and the C950 ES. Both are Energy Star rated, with an improved EF of up to 0.94. The heater comes with an automated and fully modulating bypass for temperature stability. The wall-mounted heater offers multiple venting options, including fast, simple concentric PP up and out, and up to four units cascaded and vented together through a sidewall or roof with the company’s new polypropylene common venting system.   
Bosch  
CIRCLE 103 on inquiry card