McDowall Company has been installing heating, ventilating and air conditioning (HVAC) systems for industrial, commercial, healthcare, municipal, and education facilities since 1960. We provide these HVAC systems through the use of plans and specifications developed by others (plan/spec method) or by custom designing a system for the customer's needs and applications (design-build method). Whether it is a plan/spec or a design/build type project, our correct assessment of our customer's needs, intelligent system design, informed manufacturers' selection, precise installation and experienced maintenance capabilities have made us a leader in the industry.
Dating back to the late 1800's, McDowall Company has mastered and perfected our expertise in installing a wide range of Commercial Roofing systems. From the durability and toughness of a Built-Up Asphalt and Gravel System, to the cool comfort of a White TPO System, we can install almost any roofing system that best suits your needs. Our staff's attention to detail ensures our roof systems will provide years of reliable service. We install the highest quality products in the industry today and are certified, award-winning installers of Carlisle, GAF, Garland, Firestone, and Tremco products.