When it comes to keeping your home safe, efficient, and comfortable year-round, Ongaro & Sons is the name Northern California trusts. For nearly 100 years, we’ve delivered top-quality service in heating and cooling, plumbing, electrical, and solar energy solutions—all under one roof.
With licensed professionals, industry-leading equipment, and a commitment to long-term value, we’re here to keep your systems running smoothly, every season, every year.
Whether you’re dealing with a leaking pipe, flickering lights, an outdated HVAC system, or you’re ready to make the switch to clean energy, our certified professionals are ready to help. We bring unmatched expertise, attention to detail, and genuine care to every job we do.
Trusted Home Comfort Solutions in Marin, Sonoma & Napa Counties
From Marin to Sonoma to Napa County, Ongaro & Sons proudly serves families across the North Bay and beyond. We’re your go-to resource for whole-home solutions designed to improve energy efficiency, enhance comfort, and reduce utility costs.
Whatever your situation, Ongaro & Sons is your trusted partner for all things home comfort. From quick, dependable repairs to full system installations, our skilled technicians are here to deliver professional, top-quality service every step of the way. Call us at 415-741-2820 or request services online to schedule your appointment.
Our Full Range of Services
Air Ducts
Air Handlers
Boilers
Duct Cleaning
Ductless Systems
Energy Audits
Gas Fireplaces
Gas Furnaces
Geothermal Heat Pumps
Heat Pumps
Home Automation
HVAC New Construction
Indoor Air Quality
Insulation Services
Oil Furnaces
Oil-to-Gas Conversion
Pool Heater Services
Radiant Floor Heating
Radon Testing
Sheet Metal
Zone Control Systems
Your Comfort, Our Priority
Ongaro & Sons is your trusted heating, cooling, plumbing, electrical, and solar expert—specializing in reliable maintenance and repair services that keep your home running efficiently year-round.
Our certified technicians deliver unmatched expertise with fast, friendly service across Northern California. From HVAC tune-ups to plumbing repairs and electrical upgrades or solar solutions, we focus on energy-efficient performance and long-term comfort. Count on us to maintain the systems that power your home and keep your environment just the way you like it.
PHCC- and NATE-Certified Experts
Our technicians are licensed, experienced, and trained to service all makes and models.
Locally Owned and Operated
Serving the Napa, Marin, and Sonoma communities with personalized, hometown service.
Reliable Repairs
We respond quickly and get the job done right the first time—no surprises.
Heating and Cooling Services in Northern California
Whether you need a furnace tune-up before winter or want to upgrade to a high-efficiency AC system, Ongaro & Sons has your back. Our NATE-certified HVAC technicians provide fast, reliable service, backed by decades of experience in both traditional and modern home systems.
Reliable Plumbing Solutions From Leaks to Remodels
Ongaro & Sons is your trusted partner in Northern California for professional, courteous, and timely plumbing service from a dripping faucet to full-scale plumbing upgrades. We’re fully licensed and insured, and we offer transparent pricing for every project, big or small.
Northern California’s Premier Electrician
Your electrical system—and solar energy setup—power your entire home. Our licensed electricians expertly handle everything from fixture replacements to complete rewiring and solar integration, ensuring your home runs safely, efficiently, and sustainably, whether you're upgrading, remodeling, or expanding.
Why Choose Ongaro & Sons?
We treat your home like our own—providing dependable service that’s rooted in family values and customer trust.
Family-Owned and Operated Since 1932
With roots dating back to 1932, Ongaro & Sons remains a proud, family-owned business dedicated to honest service, quality craftsmanship, and building lasting relationships with every customer.
Local Experts Serving Marin, Sonoma, and Napa Counties
We know Northern California because we live here too. Count on our local technicians for fast, knowledgeable service throughout Marin, Sonoma, Napa, and the surrounding areas.
Fully Licensed, Bonded, and Insured Professionals
Your home is in expert hands. Our team is fully licensed, bonded, and insured—delivering peace of mind and professional-grade workmanship on every repair, installation, or upgrade.
Transparent Pricing and Clear Communication
No hidden fees. No surprises. We provide honest estimates and walk you through your options so you feel confident and informed every step of the way.
100% Satisfaction Guarantee on All Services
We stand by our work. If you're not completely satisfied, we’ll make it right. Your comfort, safety, and satisfaction are always our top priorities.
Contact Ongaro & Sons for Your Home Improvement Project
Whether you're tackling a single repair or planning a full system upgrade in Santa Rosa, Napa, San Rafael, or any of the surrounding communities in Northern California, Ongaro & Sons is here to help. Call us today at 415-741-2820 to schedule service or request a quote—we’re proud to serve as your all-in-one home comfort provider.