The Viessmann Vitodens 100 is an energy efficient condensing boiler for home heating. The condensing boiler removes the stigma often associated with gas-fired boilers. Most look at the traditional gas boiler with a wary eye: fluctuating fuel prices and dwindling resources have given gas-fired systems a bad name. The Vitodens 100, however, removes this concern. The Vitodens 100 is a condensing boiler, meaning it achieves an efficiency leaps and bounds above other gas boilers.
A condensing boiler achieves its efficiency through a secondary heat exchanging unit. A traditional gas-fired boiler uses only one heat exchanger. A gas-fire heats the hydronic water, which then heats the home, and the fire’s exhaust gas is vented outside. A condensing boiler, however, uses its secondary heat exchanger to capture the heat from exhaust gasses. The heat from vent gasses is then used to preheat the boiler water, adding up to 8 percent fuel efficiency. Even the most efficient standard gas fired boiler achieves an Annual Fuel Utilization Efficiency (AFUE) rating around 90 percent. This sounds impressive until one hears a Vitodens 100 gas fired condensing boiler can achieve AFUE ratings of 98 percent. That 8 percent savings, over a year-or over the life of the boiler system-translates into impressive savings.
The Vitodens 100 is a wall mounted gas fired condensing boiler. Instead of crowding the basement, it hangs on virtually any wall, no bigger than a cabinet. It is capable of outputting almost 120,000 BTUs of heat an hour, providing ample heat for small and mid-sized homes. Even at maximum output, the Vitodens 100′s quiet operation means it makes no more noise than a standard refrigerator.
Its low price and high efficiency make it a perfect choice. A standard stainless steel Inox-Radial heat exchanger and optional domestic hot water heating CombiPLUS kit means the Vitodens 100 can heat both a home and its bath water with ease.