These days, air conditioning isn’t a luxury—it’s a necessity. When temperatures rise across Northern California, you want reliable, efficient cooling to keep your home comfortable.
At Ongaro & Sons, our experienced team of HVAC professionals is here to help you maintain the comfort you deserve. For over 90 years, we’ve provided dependable air conditioning repair, maintenance, and new system installation throughout Marin, Sonoma, and Napa counties, as well as communities in between.
Whether you need a seasonal tune-up or are ready to upgrade to a more efficient unit, you can count on us for honest recommendations and top-tier service. Let us help you stay cool and comfortable—today and for years to come.
Air Conditioning Services in Northern California
Ongaro & Sons delivers full-service air conditioning solutions tailored to the unique climate challenges of Northern California—from the coastal breezes of Marin to the warmer temperatures of Sonoma.
Our expert technicians stay current with the latest training and technologies, ensuring precise diagnostics, thorough maintenance, and expert installations. We service all major AC brands and take pride in doing every job right the first time.
Air Conditioning Maintenance Tips
Keeping your air conditioner in top shape helps it run more efficiently, lowers your energy bills, and extends its life span. You can avoid unexpected breakdowns during the hottest months with just a few simple habits and regular upkeep. Here are some essential maintenance tips to keep your AC performing at its best.
Dirty filters restrict airflow and reduce your system’s efficiency. Replace or clean your air filters every 30-90 days—more often during high-use seasons—to improve indoor air quality and help your AC run more effectively.
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.
Air Conditioning Repairs
Not having your air conditioner working on the hottest days California has to offer can be exasperating. Whenever you need an AC repair, let our cooling experts quickly remedy the problem for you.
Signs you need air conditioning repair include:
- Hearing an unusual noise
- Smelling an unusual odor like burning
- Feeling warm air coming from your vents
- Noticing your air conditioner is frozen
- HVAC system is leaking water
Ignoring problems usually only makes them bigger and more costly. We make our repairs right the first time—and only use the highest quality parts and materials when working on your system. Our experts are always here for you.
Air Conditioning Installation and Replacement
If your air conditioner has reached the point where repairs no longer do the job or your home’s energy efficiency is at an all-time low, you may need a new system. When you're ready for a new or replacement air conditioner, Ongaro & Sons professionals will install your new cooling system without delay.
How do you know if you need a new air conditioning installation? Here are some of the most common issues. If your unit is:
- Approaching the end of its life span (15–20+ years)
- Experiencing more and more repairs
- Showing signs of running inefficiently
If you notice any of these signs with your air conditioner or if you suspect another reason for needing a replacement, talk to one of our Ongaro & Sons team members. We will design and quote an AC system best suited to your comfort needs and budget.
We also offer several financing options, with approved credit, to alleviate any concerns regarding postponing a much-needed upgrade. Contact us to discuss how our team can guide you through our process.
Schedule Your Air Conditioning Service
We provide all the services you need to achieve the level of cooling comfort you want from your air conditioner. If you need a quick repair, seasonal maintenance, or a brand-new installation, our experienced team is ready to help you stay cool and 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 for fast, reliable AC service you can trust.
5%
Member Discount
Ongaro Maintenance Plans
Annual maintenance on your home systems provides safeguards and comfort to you and your family. Neglecting your routine checkups can potentially put everyone at risk.
With these annual visits, our experienced technicians use the latest technology to help find unsafe problems before they can become bigger problems.
Maintenance Plan Benefits
Member benefit of 5% discount on repairs and replacements.
Proactive maintenance identifies and addresses issues before they become big problems.
Courtesy reminder calls for scheduled services and appointments.
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
Absolutely. A heat pump can serve as both your heating and cooling system. In colder regions, some homeowners choose to pair a heat pump with a backup furnace in a dual-fuel system for maximum efficiency and comfort.