O.A.T., Inc. is a Canada-based company that is engaged in the refrigeration and air conditioning business. The Company specializes in heating, ventilation and air conditioning (HVAC) and mechanical construction services for public and private sector projects. It 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. It 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 Company's clientele is mainly government sectors, military units, air force base, and marine corps base, and others.