Are you on the lookout for a reliable company to service your commercial heating, ventilation, and air conditioning (HVAC) equipment? Do you need to upgrade your business’s heating and cooling system, or is there an issue that needs to be repaired?
Whether you’re managing a retail space, office building, restaurant, or other commercial property, a reliable heating and cooling system is essential for maintaining comfort, productivity, and energy efficiency. Ongaro & Sons understands the unique demands of commercial HVAC systems—from installation and retrofits to routine maintenance and reliable repairs.
We take a proactive approach to ensure your system performs at its best year-round, helping you reduce energy costs, extend equipment life, and avoid downtime. As a family-owned company, we’re committed to doing the job right, on time, and with minimal disruption to your operations.
Comprehensive HVAC Services in Northern California
Ongaro & Sons is your go-to solution for all commercial HVAC services in Marin, Sonoma, and Napa counties, as well as all surrounding Northern California communities.
Whether your furnace is malfunctioning or your AC unit is making unusual noises, our commitment is to resolve your issues swiftly and effectively so that there is minimal disruption to regular business practices.
Contact us today at 415-741-2820 for expert commercial HVAC services throughout Northern California.
Our Full Range of Commercial Services
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 HVAC We Can Install, Maintain, and Repair
These units, available in all-electric or gas/electric dual-fuel options, range from 2 to 10 tons. They are designed for both heating and cooling applications on rooftops, with services including repair and replacement.
Commercial HVAC Installation and Replacement Services
When it’s time to install or upgrade your commercial HVAC system, Ongaro & Sons delivers customized solutions that fit your business’s unique needs. Our team starts with a thorough evaluation of your building’s layout, usage, and energy demands to recommend the right heating and cooling equipment. We work with top manufacturers to provide high-efficiency systems that offer long-term value and reliable performance.
Whether you’re outfitting a new construction project, expanding your current system, or replacing aging equipment, we prioritize seamless installation with minimal disruption to your business operations. Our licensed technicians adhere to strict safety and code compliance standards, ensuring your system is properly sized, correctly installed, and built to last.
We also offer ductwork design, zoning systems, rooftop units (RTUs), and energy-efficient upgrades like smart thermostats and building automation systems.
Commercial HVAC Repairs
When HVAC issues arise, fast, reliable repair service is critical to maintaining a comfortable and functional commercial environment. Ongaro & Sons provides prompt commercial HVAC repair across Northern California, with technicians trained to diagnose and fix all major brands and system types.
We understand how equipment breakdowns can impact productivity, customer satisfaction, and safety. That’s why we arrive equipped with the tools and parts needed to resolve most problems on the first visit. From uneven heating or cooling to refrigerant leaks, faulty compressors, or thermostat issues, we restore system performance quickly and efficiently.
We back our repair work with a warranty at Ongaro & Sons. Contact us to get your commercial HVAC system back in top condition.
Commercial HVAC Maintenance Services
According to the U.S. Department of Energy (DOE), commercial buildings consume 40 percent of the energy used in the United States, so imagine reducing a portion of that and how much you could save in heating and cooling costs each month!
At Ongaro & Sons, we provide maintenance services to keep your commercial HVAC systems running smoothly for years. We recommend scheduling furnace maintenance in early fall and AC maintenance in spring.
Our commercial maintenance programs are tailored to your building’s needs and may include filter changes, coil cleaning, system inspections, refrigerant level checks, and safety controls testing. We also provide detailed reports after every visit, so you’re always informed about your system’s condition.
With scheduled maintenance from Ongaro & Sons, you can plan ahead, stay compliant with manufacturer warranties, and protect your bottom line through consistent, dependable HVAC performance.
Ask us about a customized maintenance plan tailored to your business needs and budget. Maintenance plans offer a hassle-free way to care for your HVAC system and avoid unexpected repairs.
Schedule Your Commercial HVAC Service Today With Ongaro & Sons
Need a dependable company for your commercial HVAC installation, service, or repair?
Serving Novato, Tiburon, Sebastopol, and elsewhere in Northern California, Ongaro & Sons is your trusted partner for commercial HVAC installation, repair, and maintenance. We are committed to your business’s comfort and efficiency. Call us at 415-741-2820 or request services online today for a consultation.
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*
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Frequently Asked Questions
We serve a wide range of commercial properties including office buildings, restaurants, retail stores, schools, healthcare facilities, and industrial sites.