D&B Engineering has been selling a variety of heating and air-conditioning equipment since 1971. Located in Bloomfield, N.J., the company employs sales and application engineers and support staff members who provide customer support services for building owners and mechanical contractors. It offers equipment design services for institutional, commercial and industrial applications. The company offers thermal storage systems, unit ventilators, heat pumps and chillers. D&B Parts Corporation, a wholly owned subsidiary of D&B Engineering, provides parts replacement services for compressors, motors and filters. The company is a member of the United States Green Building Council and the New Jersey Sustainable Business Alliance. It provides products from various manufacturers, such as McQuay International, Shaw Perkins, The Whalen Company and Venmar CES.