When it comes to your commercial heating needs, you only want to work with the best—Ongaro & Sons.
We are Northern California’s leader in commercial heating, ventilation, and air conditioning (HVAC) systems. We specialize in commercial HVAC installation, replacement, repair, and maintenance. No matter what your commercial heating needs may be, from small retail stores to large office buildings and industrial facilities, we have the experience and technical expertise to service a wide range of commercial heating systems.
We work with all major brands and heating technologies, including commercial furnaces, heat pumps, and boilers, tailoring our services to fit your specific building and usage requirements.
Call us today at 415-741-2820 for a consultation. You will never go wrong when you hire Ongaro & Sons.
Reliable Commercial Heating in Northern California
Our licensed and NATE-certified technicians are trained to handle everything from system diagnostics and repairs to annual preventative maintenance and full heating system installations.
At Ongaro & Sons, we know that reliable heating is critical to your business. That’s why we prioritize fast response times, transparent pricing, and high-quality workmanship to keep your system running at peak performance. With decades of experience and a commitment to exceptional service throughout Sonoma, Napa, and Marin counties, you can count on us to deliver heating solutions that meet your needs and exceed your expectations.
5 Reasons to Hire Ongaro & Sons for Commercial Heating in Northern California
With roots going back to 1932, Ongaro & Sons brings generations of experience to every job. Our deep understanding of Northern California’s diverse climates and commercial infrastructure allows us to deliver heating, cooling, plumbing, and electrical solutions tailored to the unique demands of the region—from coastal fog to inland heat.
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.
Commercial Heating Installation and Replacement
When your California company’s heating system requires a retrofit or a complete replacement, our Ongaro & Sons experts will design and install the perfect system for your needs.
Investing in a new system is a larger expense, but we will always work with you to find the most cost-effective and energy-efficient solution.
We know not every replacement is planned. Sometimes, a repair evolves into an unexpected full replacement. Integrity is very important to us as a company; you can be assured of our honesty. We will never sell you anything you don’t need or anything substandard.
Our professionals only offer the highest quality in both equipment and materials. Your new commercial heating system will last for years with the proper professional maintenance. It’s an investment you can count on.
Commercial Heating Repairs
If your current commercial heating system isn’t heating your building and, in turn, your employees and customers as it should, or if it’s beginning to make odd noises, talk to our professionals immediately. Putting off a needed HVAC repair only makes the repair bigger and more expensive.
We will quickly diagnose and repair the issue so your California company’s productivity is affected as little as possible. Our professionals repair all brands and models, indoor and rooftop units (RTUs) alike. We want your system’s efficiency where it needs to be, so you can keep your bottom line where it needs to be.
5 Telltale Signs Your Commercial Heating Needs Repair
Commercial heating systems should operate relatively quietly. Banging, clanking, grinding, screeching, or whistling sounds from the unit or ductwork can point to loose components, failing motors, worn-out bearings, or even issues with the blower fan.
Commercial Heating Maintenance
Proper preventative maintenance for your commercial system is a must for lower energy bills, fewer unexpected costly repairs, and a longer system life span. Having our commercial HVAC professionals regularly inspect and clean your system is a smart business move.
Thinking that regular maintenance is a place to cut financial corners is a mistake. It only leaves your system unprotected and you with more repairs, higher energy bills, and a needed system replacement sooner than planned.
The best way to protect your commercial system is with professional maintenance. We offer a custom commercial maintenance plan to help you take care of your maintenance.
Talk to us today about how we can help you.
Contact Ongaro & Sons for All Commercial Heating Needs
Keep your business warm, efficient, and worry-free with expert commercial heating services from Ongaro & Sons. We proudly serve businesses throughout Marin, Sonoma, and Napa counties, as well as neighboring Northern California communities. Whether you need fast repairs, routine maintenance, or a new heating system, our skilled team is ready to help.
Contact our Ongaro & Sons commercial heating experts to discuss how we can help you and your business. Call us at 415-741-2820 or request services online today.
5%
Member Discount
Ongaro Commercial Maintenance
Proper preventative maintenance for your commercial system is a must for lower energy bills, fewer unexpected costly repairs, and a longer system life span. Having our experts regularly inspect and clean your system is a smart business move.
No matter what type of commercial heating, cooling, plumbing or electrical system you may have—indoors or outdoors or a combination of both—Ongaro & Sons' commercial professionals have the valuable expertise to maintain it all.
Maintenance Plan Benefits
Keeping your equipment in optimal condition aids you in avoiding unexpected costly repairs, and when your commercial system runs at its highest efficiency, you save energy and money.
Regular, professional maintenance validates your commercial systems' manufacturer’s warranty. Having proof of professional maintenance goes a long way with any claims, should the need arise.
We understand you are not a cookie-cutter company. Neither should your maintenance be. Talk to us about how we can design a commercial maintenance plan just for you.
Special Offers
Enjoy our seasonal promotions and save on your next service.
Limited-time offers—don’t miss out!
Free MacBook Air
With HVAC Upgrade*
$700 Off
Hydro Jet Sewer Cleaning*
FREE
Camera Inspection*
$69
HVAC System Diagnostic*
Explore Our Blogs
Ready for the best tips and seasonal advice from the pros?
Frequently Asked Questions
We serve a wide range of commercial properties including office buildings, restaurants, retail stores, schools, healthcare facilities, and industrial sites.