Commercial HVAC Maintenance Contracts
Commercial HVAC Maintenance Services in Marin, Sonoma & Napa County
Avoid Unexpected, Costly Repairs
When you participate in our Ongaro & Sons commercial preventative maintenance, you are taking a large proactive step to protect your investment. Our certified professionals will service your system on a regular basis to help you avoid breakdowns and general problems.
How Ongaro Memberships Can Save You Money
We provide the highest level of service and value in our industry – and our work is always 100% guaranteed.
All work is performed under active California contractors license #215233.
Benefits of an Ongaro Membership
What Are the Advantages of Commercial Maintenance?
We provide the highest level of service and value in our industry – and our work is always 100% guaranteed.
- Routine service helps protect your commercial HVAC investment.
- Certified professionals service your system on a regular basis.
- Preventative care helps you avoid breakdowns and general problems.
Dependable Commercial HVAC Support
I have been working with Ongaro and Sons since 2022, for most of my home maintenance and improvement needs. They are a 5 star company in every possible way, from expertise, courtesy, workmanship, efficiency, clear explanations and professionalism. Every technician has spoken so highly of the integrity and cohesive team workmanship of their company, of whom they are uniformly proud. I recommend them wholeheartedly.
Schedule Your Commercial HVAC Maintenance Service
Protect your commercial HVAC investment with regular preventative maintenance from Ongaro & Sons. 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 Maintenance Plans
A maintenance plan is worth having when it changes what breaks, not when it just schedules a visit.
Schedule Service →Scope written around your equipment
A plan built from an actual asset list is worth paying for. A generic annual visit is not.
Three trades on one agreement
HVAC, plumbing and electrical covered by one contractor and one schedule, rather than three renewal dates.
Findings reported with a priority, not a list
You get told what must be done now, what can wait a quarter, and what to budget for next year.
Priority response for plan holders
Plan holders are scheduled ahead of general callouts, within published business hours.
Predictable annual cost
Ongaro & Sons is family-owned in Petaluma and has worked with North Bay businesses 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
How often should I maintain my commercial HVAC equipment?
Regular maintenance is crucial to keep your system running efficiently and to maintain your warranty. It’s akin to regular oil changes for a vehicle. Your air conditioner and furnace should be inspected and maintained annually.
What are the advantages of professional commercial HVAC maintenance?
Benefits of professional HVAC maintenance include inspection, cleaning, and prompt resolution of potential issues. Regular maintenance can improve your commercial HVAC system’s energy efficiency. According to the U.S. Department of Energy (DOE), commercial buildings consume 40 percent of the energy used in the United States . Imagine reducing a portion of that and how much you could save in heating and cooling costs each month! 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.