Air handlers are the unspoken heroes, doing the grunt work to keep your home comfortable. Air handlers work with heat pumps and individual air conditioners to circulate air throughout the ductwork inside your home. They typically contain a blower, air filter, and evaporator coil.
If you have a furnace, you probably don’t need an air handler, since your furnace system includes a blower component that functions similarly to circulate air. A furnace also works as an air handler if paired with an air conditioning system.
But if you have a heat pump or air conditioning system without a furnace, an air handler is essential. These quiet, efficient systems provide year-round comfort while also improving indoor air quality.
Air Handler Services in Northern California
At Ongaro & Sons, our NATE-certified HVAC experts are ready to help you with any questions you have about air handlers or services you may need to keep your air handler in good shape. We bring decades of hands-on experience and stay up to date with the latest industry advancements and technologies.
We offer complete air handler services in Marin, Sonoma, and Napa counties. From diagnostics to repairs and routine maintenance to aging system replacement, Ongaro & Sons is here to help with any air handler need.

Air Handler Maintenance Tips
Proper air handler maintenance is key to keeping your HVAC system running smoothly and efficiently. Follow these tips to help extend the life of your system:
Routine maintenance keeps your air handler running at peak performance, helping your HVAC system operate more efficiently. When everything’s clean and properly adjusted, your system doesn’t have to work as hard—potentially cutting your energy bills by up to 30% while extending the lifespan of your equipment.
Schedule maintenance online today, or enroll in our maintenance plan so that when it’s time for your checkup, we’ll send you a reminder. Let us help you get the most out of your air handler and save on your utility bills!
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 Handler Repairs
Does something feel off? Are you hotter or colder than usual? Are strange, clanking-like noises keeping you up at night? Your air handler might be the culprit.
Our team of trusted heating and cooling specialists can help you out. We regularly troubleshoot faulty air handlers and can get your HVAC system working quickly. If you think your air handler may be broken or operating at a reduced capacity, call us right away to get it fixed. Smaller issues can grow into larger ones, leading to breakdowns that require a whole new system.
We regularly train and stay informed on HVAC products, new and old. Even if we didn’t install your air handler, we know how to fix it. Schedule a repair online today, and we can diagnose and repair your air handler to keep you comfortable throughout the year.
Air Handler Installation or Replacement
As a rule of thumb, properly maintained air handlers last around 15 years—is yours approaching (or surpassing) that milestone?
To see if you’re ready for a new system, consult with one of our friendly technicians. We’ll help you make the right call about whether additional repairs are worth the cost or if your current air handler unit should retire.
We’re pleased to bring the latest technology to your household. We know there’s never a universal solution. That’s why, before we start any job, we’ll take the proper measurements to find the best air handler that fits your home comfortably like a new sweater. Ongaro & Sons professionals will always provide our customers with a free and honest assessment and an upfront price tag. That way, you’ll know what to expect—no hidden surprises. We want you to be pleased with the result.
Are you ready to update your home HVAC system? Schedule an appointment online today. Be sure to ask about our convenient financing options (subject to approved credit) that make it easy for you to create a healthy home.
Learn More About Air Handlers Today
If you’re looking to improve your home’s comfort and efficiency, understanding your air handler is a great place to start. Whether you need maintenance, repair, or a new installation, the experts at Ongaro & Sons are here to help. We proudly serve homeowners in Novato, Ross, Glen Ellen, and throughout Marin, Sonoma, and Napa counties, as well as the surrounding Northern California communities.
Our experienced technicians can answer your questions, assess your system, and provide honest, effective solutions tailored to your home. Call 415-741-2820 or request services online to schedule service or learn more about your air handler options.
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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.
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Frequently Asked Questions
Common reasons your heater is blowing cold air include:
- The thermostat is set to “fan only.”
- The heater hasn’t fully warmed up.
- A dirty air filter is restricting airflow.
- There’s an issue with the ignition system.
A professional heating inspection from Ongaro & Sons can quickly pinpoint the issue and provide you with expert repair solutions.



