In 1915, Ed Peterson started a plumbing and tinning company on First Street West in Sonoma, CA.
Now, 100 years later, Peterson Mechanical has spanned four generations of the Peterson family and tackled increasingly complex projects in the fields of health care, technology, education, wineries, hospitality, and more.
Throughout it all, our commitment to our customers has been unwavering.
Here we are proud to share some highlights of our history as we look forward to the future.
Checkout a recent article we're featured in: Better Construction Coordination Reinforces the General-Contractor–Subcontractor Relationship
In the early years of his business, Ed Peterson was a plumber and also a dealer of tanks, pumps, water pipes, windmills and brass faucets. He brought the latest technologies to his customers, including Crane automatic water heaters in the 1920s.
Ed Peterson shows off the boiler used for the new hydronic heating system in Peterson's new Broadway store in 1949. While the under-floor heating system was a novelty at the time, it remains popular today, especially in cold climates.
Rich Peterson, who was a member of the Sonoma Valley Chamber of Commerce board of directors, designed and built a rotisserie for the chamber's first ox roast fundraiser in the 1960s. Photo from Sonoma Valley Chamber of Commerce.
Les Peterson, left, became the third generation of Petersons to join the business in 1973. He's seen here with his father, Rich Peterson, in front of the First Street East building that the company occupied from 1963 to 1999. Photo from Sonoma Index-Tribune, July 1979.
Peterson has worked on numerous hospital projects over the years, including Hillcrest Hospital in Petaluma in 1973. Because patients' well-being is at stake, hospital mechanical systems must be built to high standards of reliability and redundancy.
Peterson Mechanical was at the forefront of solar energy systems. A solar home Peterson worked on was featured on the cover of Sunset magazine in the 1970s. Instead of using photovoltaic (PV) cells to capture the sun's energy, a technology that wasn't commonly used in homes until later, the system relied on solar-heated water.
Peterson Mechanical uses the latest CAD, CAM and BIM technologies, as seen in this recent photo. But their use of computer-aided design began in the 1980s, when the introduction of CAD revolutionized engineering.
In 2003, Peterson Mechanical installed HVAC systems for Agilent Technologies' clean room facilities, a project that required precise control of temperature and humidity and highly purified airflow. But clean rooms are not new to Peterson, which completed its first clean room project in 1969 for a printed circuit manufacturer.
In 2004, Scott Peterson joins the company, becoming the fourth generation of Petersons to work in the business. Here Scott, Les and Rich Peterson, from left, look over sheet metal forms at their Eighth Street East building. Photo by Robbi Pengelly for Sonoma Valley Business, 2006.
The 1931 Model A Ford owned by Peggy and Les Peterson is popular at community events, including this 2005 Fourth of July parade. Rich Peterson is seen in the passenger seat. The car originally belonged to a chauffeur at the estate of sugar-fortune heir Rudolph Spreckels.
Peterson's work with restaurants was taken to a new level in 2011 with the Culinary Institute of America in St. Helena. Peterson helped construct the expansive student cooking facilities, including exhaust hoods, hot water and natural gas, in the former monastery-turned-winery.
In 2012, the Green Music Center at Sonoma State University presented a unique challenge for Peterson. Not only did the HVAC system need to be quiet enough to not interfere with musical performances, but zoned temperature control for the audience and performers needed to function even when the facility is opened to the outdoors.
Peterson Mechanical played an integral role in construction of Sutter Santa Rosa Regional Hospital, which opened in October 2014. Peterson built mechanical systems including hot and cold water, waste, and medical gases for the $284 million hospital, which has its own water storage and delivery system.
As Peterson Mechanical enters its second century of business, Les and Peggy Peterson, at right, welcome the company's new leadership team. From left are Mike Titchenal, Zach Brandner and Scott Peterson.
The Peterson Family, owners of the fourth generation family owned Bay Area Mechanical Contractor, Peterson Mechanical, were given the Spirit of Sonoma Award this year! Supervisor Susan Gorin presented the award to Scott Peterson. The award is in recognition of the personal contributions and leadership qualities that inspire others.
Peterson Mechanical has been work with the Sonoma Valley…