ACCO Engineered Systems doesn't break a sweat to keep you cool. The company provides design, construction, and maintenance of mechanical systems, including heating, ventilation, air-conditioning, refrigeration, piping, plumbing, engineering, and building controls. The employee-owned company is licensed in nearly 20 states across the US, with operations mainly on the West Coast. Subsidiary Sunbelt Controls serves Southern California and installs automated building systems. ACCO's projects include office buildings, shopping malls, hospitals, hotels, clean rooms, factories, theaters, stadiums, and more. Clients include Boeing, Disney, Microsoft, Sun Microsystems, and Universal Studios, as well as the government.