Mechanical and Plumbing Expertise for Marin and the North Bay

State-certified mechanical and plumbing services for homes, businesses, and infrastructure projects. Serving Marin, Sonoma, Napa, San Francisco, Alameda, and Contra Costa counties with trusted craftsmanship and direct owner accountability.

Our Specialized Service Approach

Delivering Advanced Mechanical Solutions for Every Need

At Marin Mechanical II, our services are built on more than 27 years of local experience and state-certified expertise. From precise hydronic heating installations in Eichler homes to backflow prevention for municipal water systems, we offer a full spectrum of mechanical and plumbing solutions. Each project benefits from direct communication with our owner-led team, ensuring honest guidance, regulatory compliance, and lasting results. Our work is tailored for Marin County, Sonoma, Napa, and the broader Bay Area, providing homeowners and commercial clients with high-efficiency systems, sustainable upgrades, and expert troubleshooting.

What Sets Our Services Apart

Owner-Led Service, Technical Authority, Green Building Focus

Our service model goes beyond standard plumbing. Marin Mechanical II is state-licensed (A, C4, C36, C46) and uniquely qualified to handle everything from allergy friendly radiant heat repairs to city mandated backflow certifications. Whether you’re a San Rafael homeowner with a failing boiler, a Terra Linda Eichler seeking radiant upgrades, or a contractor managing large-scale commercial projects, our team delivers with honesty and precision. We are committed to water conservation, energy efficiency, and direct accountability no automated call centers or high-pressure sales tactics, just real expertise from Tony, Jeff, and Jarrett.

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 Water Heaters & Boilers

 Keep hot water flowing with expert replacement, repair, and upgrade services for residential and commercial water heater and boiler systems.

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 Water & Gas Piping

Whether you're addressing leaks or planning improvements, we provide dependable water and gas piping solutions tailored to your property.

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 Backflow Prevention

Protect your drinking water with certified backflow testing, inspections, repairs, and installations that support regulatory compliance.

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 Fixture Installation

Refresh your space with professionally installed sinks, faucets, shower fixtures, water closets, filtration systems, and more.

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 Hydronic Heating

Enjoy even, energy-efficient comfort with specialized hydronic and radiant heating services designed for long-term performance.

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 Commercial Services

From new construction to infrastructure upgrades, we deliver specialized mechanical and plumbing services for commercial facilities.