Commercial Cooling
Commercial Cooling Services in Marin, Sonoma & Napa County

Let us take care of your cooling system, so you can take care of your business.
Ongaro & Sons is a leading HVAC provider for commercial cooling services throughout the North Bay. From Marin to Napa and Sonoma counties, we provide effective and practical solutions to your company's cooling issues.
Our commercial professionals are highly qualified and trained for all commercial cooling scenarios. We service all makes and models of commercial cooling systems. Call us today at 415-741-2820 for a consultation.
Experienced Commercial Cooling Company in Marin, Sonoma & Napa County
From diagnosing and repairing complex HVAC systems to performing routine maintenance and complete system upgrades, Ongaro & Sons delivers dependable service backed by decades of experience.
Our team stays current on the latest energy-efficient technologies, helping your business reduce energy costs and maintain optimal indoor climate control year-round. When you choose Ongaro & Sons, you partner with a team that values professionalism, integrity, and lasting results.
5 Reasons to Hire Ongaro & Sons for Commercial Cooling in Marin, Sonoma & Napa County
Established in 1932, Ongaro & Sons has nearly a century of experience serving the North Bay. This deep local knowledge means we understand the unique climate challenges and commercial building needs of the region, from the coastal cool to inland heat, ensuring solutions are tailored for optimal performance.
Beyond just cooling, Ongaro & Sons offers a full spectrum of commercial HVAC, plumbing, and electrical services. This allows businesses to consolidate their maintenance and repair needs with one trusted provider, simplifying logistics and ensuring integrated solutions for the entire building infrastructure.
Ongaro & Sons emphasizes continuous training and holds important industry certifications, including industry-certified technicians and licensed plumbing contractors. This commitment ensures our team is up-to-date with the latest technologies, best practices, and safety standards for complex commercial systems.
With numerous positive testimonials and a strong Diamond Certified® rating, Ongaro & Sons has built a reputation for professionalism, responsiveness, and quality craftsmanship. Businesses can trust they are partnering with a company known for prioritizing client satisfaction and delivering reliable results.
North Bay businesses focused on sustainability and reducing operational costs will appreciate our approach. Ongaro & Sons can recommend and install energy-efficient cooling solutions, helping your business minimize its carbon footprint and achieve significant long-term savings on utility bills.
Commercial Cooling Maintenance

Keeping up with routine professional preventative maintenance on your commercial cooling system is just a smart move to make. It keeps your system operating at its highest efficiency, resulting in lower energy bills.
Preventative maintenance also prevents unexpected costly repairs, promotes a longer system life span, and keeps you in compliance with your manufacturer’s warranty.
Investing in a customized commercial preventative maintenance program pays for itself over the years with all the benefits it offers. Call and talk with one of our friendly team members for more information.
Commercial Cooling Installation and Replacement
When your cooling system has called it quits, you need the top commercial professionals who can design and install the most energy-efficient system for your business. Ongaro & Sons is that company.
We understand replacing a commercial cooling system is an investment in your California business, and we don’t take that lightly. Our goal is to help you succeed. Installing the best cooling system for your needs is one way we can help, as we only work with the top systems in the industry.
Keeping your employees, customers, and occupants comfortable while they are in your building is a top priority, and, for this job, you require the optimal system.
Installing a full replacement or a retrofit can disrupt your company’s business flow. But our commercial professionals are experts at getting in and getting out without a lot of fuss. Whether your HVAC system is indoors, outdoors, or rooftop, we have the expertise to get you back where you want to be, in your comfort zone.
We will work with you to find the most energy-efficient and cost-effective system for your business. No matter what type of cooling you need, our commercial team of experts is here to get it for you.
Commercial Cooling Repairs in Marin, Sonoma & Napa County
On the other hand, sometimes you only need a repair. Your cooling system isn’t cooling at full capacity or, perhaps, is making unusual noises. Our expert team of professionals will expeditiously diagnose and then make the required repair. We know that when employees, customers, and occupants are overheated, business as usual is not usual.
We highly recommend contacting our Ongaro & Sons team as soon as you notice a problem. Waiting to address the issue typically only makes it worse, bigger and more costly. Let us take care of it as soon as it starts, and we can return your system to its regular operations.
As with an installation, our trained and knowledgeable professionals work efficiently in the background to avoid disturbing your daily workflow. In most cases, we can quickly make your repair the same day, whether it’s an indoor or outdoor system.
5 Telltale Signs Your Commercial AC Needs Repair
- Inconsistent temperatures
- Unusual noises
- Rising energy bills
- Poor airflow
- Frequent cycling or shutdowns
If some areas of your building are too hot while others remain cold, your commercial cooling system may have airflow issues, thermostat problems, or failing components that need prompt attention.
Rattling, banging, or squealing sounds coming from your commercial AC unit often indicate loose parts, motor issues, or debris in the system, none of which should be ignored.
A sudden spike in your energy costs without a clear reason can be a sign that your commercial AC system is overworking due to malfunctioning components or poor efficiency.
Weak or reduced airflow from vents can signal a clogged filter, blocked ductwork, or a failing blower motor, problems that can quickly lead to larger system failures.
If your commercial cooling system turns on and off too frequently or shuts down unexpectedly, it may be struggling with thermostat issues, electrical problems, or overheating due to a lack of maintenance.

Schedule Your Commercial Cooling Service
Whether you need cooling system repairs, routine maintenance, or a full system upgrade, our experienced team is ready to help keep your business comfortable. We proudly serve Sonoma, Marin, and Napa counties, including Santa Rosa, Bodega Bay, San Rafael, Novato, Glen Ellen, and surrounding cities. Call us now at 415-741-2820 or book your appointment online.
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 Marin, Sonoma and Napa County. 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.
Licensed, Insured, Background-Checked
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, with no surprises.
Since 1932
Why Ongaro & Sons for Commercial Cooling
Cooling is the system whose failure closes a restaurant or a server room the same afternoon.
Schedule Service →Rooftop units maintained on a schedule
Coil cleaning, belt and bearing condition, refrigerant charge and economiser operation are the four things that decide whether a unit reaches August. They are also the four most often deferred.
Refrigerant transition handled knowingly
Equipment is moving to lower global warming potential refrigerants such as R-454B. That changes what is worth repairing and what is worth replacing, and we will tell you which yours is.
Load and zoning reviewed when tenancy changes
A space that changes use changes its cooling load. Sizing that was right for the last tenant frequently is not right for the next one.
Manufacturer tier standing with Trane and Mitsubishi Electric
Both top tiers, which keeps matched equipment and warranty registration straightforward.
Work planned around your hours
Ongaro & Sons has served North Bay businesses from Petaluma since 1932.

Discount
Membership
Ongaro Maintenance Plans
Annual maintenance on your home systems provides safeguards and comfort to you and your family. Members get priority scheduling, discounts, and proactive checkups that catch problems early.
Member Discounts
5% off every repair and replacement, all year long.
Peace of Mind
Proactive checkups catch issues before they become big problems.
Courtesy Reminders
We call you to schedule: never miss a seasonal service.
Value That Lasts
With Ongaro & Sons, you’re investing in quality, integrity, and service that stands the test of time. Explore our current promotions and see the difference real value makes for your HVAC, plumbing, and electrical needs.
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Read MoreFrequently Asked Questions
Is it better to repair or replace my commercial heating and cooling system?
Generally, repairs might be the best option if your commercial HVAC system is relatively new or the damage is minor. However, upgrading to a new system might be more economical and efficient for more severe issues, especially those not covered under warranty.