Gary Walker and Associates (GWA) is a firm that sprouted from a small mechanical engineering consultancy business in the 1980s. Recognizing Simi Valley’s need for a one-stop-shop mechanical and electrical engineering service team, Gary Walker, company founder, expanded his expertise covering electrical engineering, and established the firm in 1981.
Over the years, GWA has provided expert mechanical and electrical engineering services all over America and the world. From top government institutions to major hospitals, education facilities, industrial plants, commercial spaces, and more, GWA has overseen projects in some of the world’s most critical properties.

GWA was among the experts who worked on numerous electrical wind farms in Bakersfield, California.
At present, GWA is best known for their forensic engineering services, one of the few companies to offer this kind of expertise in Southern California. Besides designing and building custom mechanical and electrical systems, they also investigate systems and construction failures and provide their findings to support clients, design professionals, law firms, insurance companies, and more.
GWA offers over 21 different types of services from heating and cooling to plumbing, power, fire protection systems, gas distributions systems, dust control, ventilation, instrumentation, research, and more.
Some of their notable project include the:
- 13-mile high-voltage transmission lines of the US Navy at Subic Bay, Philippines
- Port of Hueneme’s refrigerated warehouse in Stockholm, Sweden for Sunkist and Cools Carriers
- Los Angeles Department of Water and Power’s Maintenance and Operations Headquarters
- PepsiCo International’s Birdy Coffee Processing Plant
Visit their website to see the full list of projects they’ve completed!
GWA can help design a full system for large, commercial scale winery and wine cellars. If you’re looking for a partner engineering consultant to complete your project, contact GWA at 805-285-0711.