AW Kuettel and Sons is a 4th generation family owned mechanical and roofing contractor. We’ve been providing construction services to local businesses, schools, and hospitals since 1924. Our services include commercial plumbing, HVAC, mechanical engineering, roofing, architectural siding, and a 15,000 square foot steel fabrication shop located in the Airpark near the Duluth Airport. AW Kuettel employees are skilled union tradesmen that are licensed and trained through apprenticeship programs. We’re local, we’re experienced, and here to help you.