JJA, Inc. is a prominent mechanical and electrical engineering consulting firm based in Dallas, Texas, with a legacy dating back to 1978. Founded by Jim Johnston, the company started as James Johnston & Associates Inc. with a commitment to enhancing the quality of engineering design services in the building construction sector. Over the years, JJA has grown significantly and now offers a wide range of services including HVAC, plumbing, fire suppression, electrical distribution, critical power systems, lighting, life safety systems, sustainable designs, energy modeling, and MEP system commissioning.
With professional engineering registrations in over 30 states, JJA caters to a variety of clients both locally and nationally, emphasizing sustainable design solutions that focus on the lifecycle performance of MEP systems. The firm is dedicated to integrity and responsiveness in service, fostering collaborative solutions that meet the specific needs of their clients.
The legacy of outstanding mentorship at JJA has contributed to the development of skilled engineers in the mechanical and electrical fields, many of whom have continued their careers with the firm. With a core group of select clients established through a commitment to quality, JJA has expanded its services to multiple market sectors and is well-known for its repeat design opportunities throughout the Dallas-Fort Worth Metroplex. Today, known simply as JJA, Inc., the firm proudly upholds Jim Johnston’s vision of providing exceptional engineering services, solidifying its reputation in the industry.
