%108 high condencing output. Provides high efficiency and fuel saving by calculating capacity needed with improved electronic processor. Ease of use with multi function display and touch buttons Ease of mounting thanks to smal sizes Premix combustion system. Electricity saving with automatic air vent, 3 graded circulation pump and modulation fan. Device which increase total efficiency with special exhanger by regaining water steam energy from flue gas that arises from natural gas burning and would run out of chimney, calls CONDENSING BOILER. Condensing Boiler has low flue gas temperature. The flame length adjusts according to the needs, modulating without stopping / starting.Thanks to fan modulation high burning efficiency is obtained depending on the amount of gas consumed and much quieter operation is ensuredand . Condensing Boiler is more environmentally friendly with lower emission (CO and NOx) rates.