Bio-Tec Plus combined boilers are a new product of the water family available in the 25-31-45 kW versions. They are equipped with 2 separate combustion chambers for wood and pellets. The pellet part is equipped with automatic cleaning of the brazier while the wood area works with pyrolitic inverse flame. The efficiency and functionality of this product are guaranteed by a single multifunctional display control which, combined with the oxygen sensor and the modulating fan, optimizes and increases the efficiency of the boiler.