Peterson Mechanical is a third generation Plumbing, Heating and Air Conditioning Company founded in Sonoma by Ed Peterson in 1915. Subsequently operated by his nephew Rich Peterson, and presently by Rich's son Les Peterson.

Peterson Mechanical is active in the North Bay Area, providing new construction, renovation, and mechanical services to the following market segments: Electronic, Bio-medical, Office Buildings, Schools & Wineries, both performed in a Plan & Specification or Design Build basis.

Among Peterson Mechanical's active projects are some of the North Coast's most prominent companies; Agilent Technologies, JDS Uniphase Inc., Kaiser Hospitals, Medtronic / AVE, Sutter Health Care and Mondavi Winery.

Peterson Mechanical employs the latest Computer Aided Drafting (CAD) and computer Aided Manufacturing (CAM) technologies with full engineering capabilities.

Peterson Mechanical, Inc. employs 112 people and has a volume of approximately twenty five million dollars per year.

California Contractors License #171486