The Association for Ecological Wood Heating is represented by companies and organizations involved in the production, development, distribution, the sale and installation of local indoor wood heaters and products related to their operation. In addition, associations of entrepreneurs and companies working in related fields (stove, chimney, heating, etc.) and institutions in the field of science, research and development with a focus on heating and ecology. The size of the membership base is constantly growing with companies or supporters, who have long and intensively developed the industry or craft and represent the moral values and honour a code of ethics.