This thesis is aimed to evaluate the biomass combustion boiler service in the emission point of view. There is summarized description and features of biomass energy utilizati-on in termochemical transformations as well as in-the-house use within solving of advantages and disadvantages. In theory part the biomass boiler distribution is descri-bed. The practical part is aimed to monitor and evaluate service modes of biomass boiler in the way of energetic use, individual polutant monitoring especially in the human health and air protection. In the conclusion the municipality use is mentioned.