United Mechanical — Rohnert Park, CA HVAC & Plumbing

Business Overview

United Mechanical is a commercial and industrial HVAC and plumbing contractor based in Rohnert Park. United Mechanical Rohnert Park CA provides system design, construction, retrofit, repair, and 24/7 emergency service across Northern California. The company staffs a team of licensed technicians, project managers, and field supervisors who work on both small service calls and large building projects.

The firm handles ongoing maintenance for property managers and planned installs for developers. Emergency response is available around the clock for urgent plumbing and HVAC failures. Work covers commercial properties, warehouses, multi-family buildings, and light industrial sites.

Key Services

Services are organized to match building needs and project scale.

• HVAC: system design, installation, retrofits, rooftop units, chilled water systems, controls.
• Plumbing: new plumbing systems, repairs, plumbing inspection, pipe replacement, backflow testing.
• Energy & Sustainability: energy-efficient systems, LEED Platinum and WELL-ready components.
• 24/7 Emergency Service: on-call technicians for urgent leaks, system failures, and safety issues.

Areas Served

United Mechanical serves a broad area from Wine Country to the coast. Regular service areas include:

• Rohnert Park CA
• Healdsburg CA, Cotati CA, Roseland CA
• Hidden Valley Lake CA, Calistoga CA, Forestville CA
• Angwin CA, Cobb CA, Graton CA
• Middletown CA, Inverness CA, Bodega Bay CA
• Glen Ellen CA, Occidental CA

Company History

Founded in 2003 by Tom Sosine and Jon Gundersen, United Mechanical began as a two-person operation. It grew by taking on technically complex commercial jobs and building steady relationships with contractors and property owners. The company now ranks among the region’s consistent mechanical contractors by annual revenue and has contributed to projects with LEED Platinum and WELL considerations.

Leadership

Founders Tom Sosine and Jon Gundersen brought field experience and project management skills to the company. Both remain involved in local industry groups and maintain active contact with general contractors and developers in the Bay Area. The leadership emphasizes clear communication on schedules, budgets, and code compliance.

Specialties & Highlights

• Commercial and industrial HVAC and plumbing system design and retrofit.
• Experienced with sustainability standards like LEED Platinum and WELL-ready systems.
• 24/7 emergency response for high-priority sites and property managers.
• Trusted by large general contractors, developers, and facility teams across Sonoma and surrounding counties.

Why Locals Choose United Mechanical

United Mechanical Rohnert Park CA is chosen for steady workmanship, clear project communication, and reliable emergency response. The team is familiar with local climate challenges — wet winters, dry summers, and coastal fog — and how those affect plumbing and HVAC performance. Local owners and experienced staff make the company a practical choice for businesses and property owners who need predictable service.

Hours: Mon–Fri 7:00 AM–4:00 PM. Weekend and after-hours support is available for urgent calls. For service in Rohnert Park and neighboring towns, United Mechanical Rohnert Park CA remains a known local partner for commercial HVAC and plumbing needs.