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GPM Engineering is a full service Mechanical, Electrical, Plumbing and Refrigeration design firm with offices in Corpus Christi and San Antonio Texas. 

Our company was built around people, knowledge and the clients we serve.  Since merging independent mechanical and electrical firms in 1992, GPM has played a vital role in the creation of concept and construction design for many engineering projects throughout Texas and the United States. 

With over 35 years in business, GPM has proven to be a leader within the industry and you can be assured that it will continue to be in the years to come.  Our commitment to excellence, innovative engineering services and continuous return business make GPM the best choice for all your engineering needs.

Company Principals

Lee E. Montgomery, Jr., P.E.

Ralph S. Pitzer, P.E.






Project Managers

Mechanical Department

Plumbing Department

Electrical Department

Refrigeration Department