Ongaro & Sons | HVAC, Plumbing, Electrical, Solar.

Trusted whole home energy partner since 1932. Your heating, cooling, plumbing, electrical and solar experts.

Ongaro & Sons was founded in 1932 by Ernest V. Ongaro to provide honest, reliable service that homeowners can trust. What began as a small family business has grown into a fourth-generation company serving Marin, Sonoma, and Napa counties. Over the decades, we’ve expanded our expertise to include HVAC, plumbing, electrical, and solar, offering a seamless, whole home service experience.

Being family owned and operated for more than 90 years, our values have never changed: integrity, service, quality, and a commitment to the community we call home. We offer flat-rate, upfront pricing with no hidden fees, nationally recognized certifications for our technicians, and warranties that go beyond industry standards. With Ongaro & Sons, you can count on quality work and the peace of mind that comes from a company built on nearly a century of trust.