Ongaro & Sons
We've been serving Marin, Sonoma, and Napa counties since 1932 as a trusted source for heating, cooling, plumbing, electrical, and solar services. Our neighbors have called us over 90,000 times, and we're Diamond Certified. We provide comprehensive solutions across multiple trades, from routine maintenance and water heater work to drain cleaning, sewer line services, and water treatment systems. Our team approaches every job with professionalism and attention to detail, and our technicians take time to explain the work and answer questions.