Forgive Superior Air Handling if it has an air of superiority when it comes to specialty contracting services. The company is one of the largest HVAC sheet-metal contractors in the US. The firm fabricates custom ductwork and provides design, installation, and construction management services. It focuses on health care and medical research facilities and pharmaceutical and biotechnology laboratories; other projects include data centers, central plants, churches, and facilities for government and academic clients. Founded in 1948, Superior Air Handling was bought by Minnesota-based Harris Companies in 2008.