JJA, also known as James Johnston & Associates, is a mechanical and electrical consulting firm that has been serving clients for more than 25 years. It specializes in heating, ventilation and air-conditioning, plumbing, fire suppression and electrical distribution services. The company provides a variety of normal and critical power, indoor and outdoor lighting, plumbing, pumping and piping, building automation and life safety systems. James Johnston & Associates also offers engineering design, planning, contract administration and commissioning services. It undertakes projects for office buildings, educational institutes, health care centers, retail units, residences and manufacturing facilities. The company has worked on various projects, including Bank One, Computer Associates, DSC Communications, Nortel Networks, Truman Middle School, J.W. Carpenter Elementary School and VALEO Electronics. Its clients include Belo Corporation, Chase Bank, Allegiance Telecom, Southwest Airlines and Kodak. James Johnston & Associates is located in Dallas.

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