Dan is the principal of the Building Science Trust and a mechanical engineer with over 37 years of experience in Net Zero Retrofit planning, energy conservation, capital planning, plant and project engineering and maintenance supervision. He has worked in manufacturing, mining and building science. He also teaches mechanical engineering at community colleges. He has conducted property condition assessments, energy audits, reserve fund studies and Net Zero planning on homes, schools, office buildings, commercial buildings, shopping centers, high and low-rise residential properties, hospitals and airports. Prior to entering the consulting field, Dan managed facilities for three plants. In addition, he has extensive experience in industrial manufacturing, project engineering, plant engineering and maintenance supervision.