Menu H. A. THOMPSON & SONS Started in 1908, H.A. Thompson & Sons has been providing high quality plumbing, heating, air conditioning and mechanical contractor services not only in Bismarck, but across the region in North Dakota, South Dakota, Minnesota and Montana. In 1991, we became a LINC Service Contractor, allowing us to provide cost effective Environmental Maintenance Agreements to building and business owners throughout our region. Currently we maintain the mechanical heating and cooling systems of more than 1,000 buildings throughout the northern plains. Today we continue to provide legendary service for commercial and residential heating, cooling, and plumbing services throughout Bismarck, Mandan and surrounding area. In addition, our commercial operations in Fargo, Grand Forks, Gwinner, Garrison, New Town and Minot allow us to provide services throughout the region. We are looking forward to serving you for the next 100 years! What can you do to help prevent Coronavirus and other airborne viruses from spreading in your home or business? UPDATED HALO-LED STUDY RESULTS CONFIRMS EFFECTIVENESS ON SARS-COV-2 (COVID-19) VIRUS We are happy to announce that as of September 7th, 2021 the REME Halo-LED® has been independently verified in real world tests to inactivate the SARS-CoV-2 (COVID-19) virus by 99.9%. For more information on these results, please watch the video below or the press release for more information. If you have a home or business that would benefit from an installation of a REME-Halo LED®, please let us know. We would be happy to provide you with a free estimate for this essential equipment. Unfortunately, we are living in a time right now where we are hyper sensitive to viruses and their spread throughout the world...especially Coronavirus or Covid-19. You may be wondering if there are steps you can take to protect your home and business from not only this new threat, but a wide range of viruses, mold spores, odors and other pathogens. Visit our Indoor Air Quality (IAQ) page for more information on ways you can improve the quality of air and protect yourself from airborne pathogens. Corporate Headquarters: 911 South 9th Street Bismarck, ND 58504 Phone: (701) 223-3393 Fax: (701) 223-1517 Email: info@hatandsons.com Fargo Office 2601 12th St N, Suite 400 Fargo, ND 58102 © 2021 - H.A. Thompson & Sons H.A. Thompson & Sons Privacy Policy