Are you thinking about upgrading your furnace but not quite sure where to begin?
We understand. Furnaces are more efficient than ever, with a plethora of features designed to keep you comfortable. They come in different sizes and shapes, some more powerful than others. They also have different price points based on their efficiency ratings.
The thermostat is the brain of your heating, ventilation, and air conditioning (HVAC) system. But it’s the furnace that provides all the muscle, teaming up with your ductwork to send warm air throughout your home.
Always remember, a happy home is a warm one! It would only take a few cold days in a row with no indoor heat for all the pipes in your home to freeze.
What matters most is to pick the right furnace that fits your budget and the size of your home. Our team at Ongaro & Sons has the knowledge and expertise to help you make that choice. We’re a trusted name with decades of experience serving homeowners in Marin, Napa, and Sonoma counties, as well as surrounding areas of Northern California. Give us a call today—we can schedule a consultation to help with your next home improvement project.
At Ongaro & Sons, we're here for you after we install your new furnace. Ask about warranties on both the equipment and labor. We're your partner throughout the life of your HVAC equipment.
Keep Your Furnace Running at Its Best With Routine Maintenance
Want to get the most value from your heating system? A preventative maintenance plan is the key. Regular tune-ups help extend the life of your equipment, improve comfort, and lower energy bills by keeping everything running efficiently.
Our licensed technicians perform a full inspection and tune-up to catch small issues before they become expensive repairs. Maintenance isn’t just smart—it’s essential.
What’s Included in Furnace Maintenance?
- Inspect and clean burner assembly
- Check heat exchanger for cracks or corrosion
- Test and calibrate thermostat settings
- Lubricate moving parts to reduce wear
- Inspect and tighten electrical connections
- Clean or replace air filter
- Test safety controls and ignition system
- Measure airflow and check for blockages
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.
Furnace Repairs
Odd-sounding noises, a spike in energy bills, or constant cycling—these signs indicate a problem with your furnace. Don’t wait for a minor issue to turn into a costly problem. Contact us if you detect a problem with your HVAC system. We promise never to replace a part unless necessary—or if we can demonstrate significant cost savings.
Signs You Need Furnace Repair
Clanking, banging, or squealing sounds often signal mechanical issues like a loose belt, worn bearings, or a failing motor. If your furnace starts sounding unusual, it’s best to have it checked right away.
Furnace Installation or Replacement
Don’t invest in a quality HVAC system and then hire a substandard contractor to install it. You will never enjoy the full benefits of a system installed incorrectly.
At Ongaro & Sons, we specialize in installing equipment the right way. We take our time to ensure everything is measured correctly. Our team will also conduct a thorough energy audit of your home to find additional ways to lower your energy use.
Be sure to ask about our convenient financing options (subject to approved credit) designed to make it easy for you to create your dream home.
How to Choose an Efficient Furnace
The AFUE (annual fuel utilization efficiency) rating on your furnace indicates how much energy it converts. An energy-efficient furnace with an AFUE rating of 95 can convert 95 percent of the energy it consumes into heat.
The higher the AFUE rating, the more money you save on monthly utility bills. Energy-efficient furnaces emit fewer greenhouse gases and make less noise when they operate. If you want to reduce your home’s carbon footprint, the perfect place to start is with your heating and cooling equipment!
Choosing the Right Furnace Speed
Furnaces run at different speeds. The operating speed you choose will impact your comfort, budget, and indoor air quality.
- Single-stage furnaces have just two settings: on or off. Your furnace switches on and continues to run to reach the desired temperature. Once it reaches the temperature, it turns off. Single-stage furnaces are the most affordable models and easiest to install. However, they are the least efficient and tend to create hot and cold spots in larger homes.
- Two-stage furnaces run at full speed and half speed. This allows your furnace to heat your home more evenly, producing a more consistent temperature from room to room. In addition to producing better heating, the half-speed setting is much quieter.
- Variable-speed furnaces are the gold standard of the heating world. These models adjust their speeds to provide precise comfort. They run longer at slower speeds, improving efficiencies while lowering your energy bills. Because they do not frequently cycle on and off, these systems tend to have fewer breakdowns. Larger homes benefit tremendously from variable-speed furnaces.
Call Us Today
Our entire team at Ongaro & Sons values the trust you placed in our company—we promise to work extra hard to keep your business. Let us install your next furnace in Novato, Tiburon, Sebastopol, or any of the neighboring communities in Napa, Marin, and Sonoma counties.
Give our office a call today for a free consultation. Call us at 415-741-2820 or request services online today. We’re here to help you stay warm and worry-free all winter long.
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.