O.A.T., Inc. engages in the refrigeration and air conditioning business. The company is headquartered in Toronto, Ontario and currently employs 1 full-time employees. The company went IPO on 2009-05-14. The firm specializes in heating, ventilation and air conditioning (HVAC) and mechanical construction services for public and private sector projects. The company builds an HVAC system package to control the usage time and temperature in each room using a computer utilizing the direct digital control program. The HVAC system consists of a chiller, cooling tower, chilled and hot water pump, hydronic piping system, custom air handler, VAV box, and others. The company provides pre-fabrication and system assembly for efficient on-site installation, as well as project engineering and consulting. Its projects include the Primary Area Improvement Project, Encino Wastewater Authority, OC Fair Administration Office Addition and Los Coyotes Water Reclamation Plant, among others. The firm's clientele is mainly government sectors, military units, air force base, and marine corps base, and others.