Celebrating 25 years of Service to the Valley
Welcome to Threephase Engineering
Three Phase Engineering, Inc. T.P.E.I. was established in Mesa, Arizona August 1989. At that time, T.P.E.I. formulated a set of goals to provide the best possible services to our clients. These goals have been the foundation of our business philosophy, and are still adhered to today. In the past 25 years we have had the privilege in working on thousands of projects throughout the Valley, and the Country! Just take a look, and see what Threephase can offer you!
For more information please: