Air ducts are the unsung heroes of your HVAC system. Hidden behind walls, floors, and ceilings, your ductwork is like a superhighway circulating conditioned air throughout your home.
When it comes to improving your home’s airflow and indoor air quality, your air ducts will be there, playing a critical role in your family’s health and comfort.
Our HVAC professionals at Ongaro & Sons are well-versed in installing and repairing ductwork, bringing years of industry knowledge to every project. We never take shortcuts. We know the appropriate material in the appropriate setting provides outstanding air distribution without air leakage. Healthy ducts contribute to year-round comfort, energy savings, and overall lower costs for you.
We’re committed to ensuring your ductwork is a true asset to your home, not a hidden liability.
Air Duct Services Throughout Northern California
Whether you need ductwork installation, replacement, repair, or maintenance, our team at Ongaro & Sons is here to help. We offer complete air duct services in Marin, Sonoma, and Napa counties.
Our technicians use advanced tools and proven techniques to ensure your duct system is sealed, insulated, and functioning efficiently.
Proper ductwork not only improves indoor air quality and comfort but also helps reduce energy waste and lower utility bills. Trust us to deliver long-lasting solutions tailored to your home’s unique needs.
Do You Have Leaky Ducts?
Think your ducts may have sprung a leak? Here are some giveaways:
If your utility bills are climbing during peak seasons without a clear reason, your ductwork could be the culprit. Leaky ducts allow conditioned air to escape, forcing your HVAC system to run longer and harder just to maintain a comfortable temperature.
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 Duct Installation or Replacement
We offer high-quality, well-insulated ductwork that will properly heat and cool your home for years to come. Are you looking for replacement ductwork or want to add heating and cooling to a home addition? We offer free consultations and will give you an upfront estimate—no surprise fees. With approved credit, we offer financing options to help with your new ductwork investment.
Air Duct Repair
Are your air ducts struggling to circulate air like they used to? One of our certified experts can diagnose and patch or insulate the punctured part of the duct in record time. We’ll always give you an upfront repair estimate before completing any work.
Air Duct Maintenance
Regular preventative maintenance is the best thing you can do to protect your ducts and HVAC system. Our air duct professionals can catch issues early before they turn into costly repairs.
During a service visit, one of our experts will use specialized equipment to be sure your air ducts are circulating efficiently. We may also make recommendations to help you save on utilities each month, such as changing your air filter more regularly or scheduling an air duct cleaning.
Call Your Air Duct Experts Today
If you suspect leaky or poorly insulated ductwork, call Ongaro & Sons or request service online today. No matter the issue, our experienced team is here to answer your questions and can quickly dispatch a skilled technician to your home.
We provide air duct services in Marin, Sonoma, and Napa counties, from Corte Madera, Kenwood, and Fair Oaks to Two Rock, Cloverdale, and Napa, as well as surrounding cities in Northern California.
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*
Explore Our Blogs
Ready for the best tips and seasonal advice from the pros?
Frequently Asked Questions
Dust buildup can often be attributed to dirty filters, leaks in ductwork, or dust within your HVAC system. Regular filter changes and professional cleaning can help reduce indoor dust.