Peterson Mechanical Inc.

Peterson Mechanical Inc. has served Sonoma and the broader Bay Area as a plumbing and mechanical contractor since 1915, making it one of the region's most established HVAC providers. The company holds a 5.0-star rating across 12 reviews and operates Monday through Friday from 7 AM to 4 PM. It serves residential homeowners as well as commercial facilities, offering both installation and repair services for heating, cooling, and plumbing systems.

What distinguishes Peterson Mechanical is its vertically integrated approach to complex HVAC projects. The company maintains in-house licensed civil and mechanical engineers, custom sheet metal fabrication capabilities, and CMC duct fabrication under one roof. Their design-build and design-assist services incorporate 3D CAD and BIM modeling, while their planning division uses Navis Works for coordination and constructibility reviews. This internal capacity allows them to handle everything from skyscrapers to residential systems without subcontracting critical trades.

Reviewers consistently praise specific team members for their communication and technical skill. Kyle, described by one customer, left detailed progress notes explaining when work would resume, demonstrating the company's commitment to client awareness. Justin resolved a tricky Nest thermostat issue for another homeowner, staying until he was certain the system operated properly. A third reviewer noted the crew was so efficient and quiet during a new air and furnace installation that they frequently forgot the team was on-site.