The perfect mix of performance, quality and value   Vitodens 100-W, B1HA space heating boiler and Vitodens 100-W, B1KA Combi boiler fits any home and budget with high performance at an attractive price. Outstanding efficiency of 95% A.F.U.E. on all models. Low-emission combustion with fully-modulating Viessmann stainless steel MatriX cylinder burner for natural gas or propane. User-friendly backlit LCD touchscreen boiler control. Lasting performance with proven Viessmann stainless steel Inox-Radial heat exchanger constructed to CSA B51 and ASME Section IV. Suitable for altitude levels of up to 10,000 ft. / 3,000 m. Easy installation and service with pipe connections located at the bottom and serviceable components accessible from the front. Extremely quiet operation; quieter than most refrigerators. Built-in on-demand domestic hot water (DHW) with Vitodens 100-W, B1KA Combi boiler. Ideal for apartment units or houses with small mechanical rooms and a single DHW draw point.   Go Back