Thelen Heating and Roofing is a certified applicator, installer and service contractor, operational for more than 40 years. It offers various residential and commercial roofing, heating, cooling and ventilation systems. The company offers products of various brands, such as the Carrier, Trane and Lennox. It provides installation, maintenance and repair of asphalt, gravel, built-up and rubber roofs, and prefinished metal standing seam roofs. The company offers various asbestos abatement and delivered noise reduction solutions. In addition, it provides in-house sheet metal fabrication. The company specializes in computer-aided design and advanced technologies. It has a trained staff that helps in resolving problems and performing periodic checks and roofing assessment. The company offers various safety and warrant and maintenance services. It provides in-house design and build services. Thelen Heating and Roofing is located in Brainerd, Minn.