Zone Control Systems
Your HVAC Zoning Experts in Marin, Sonoma & Napa County
The second floor of your home gets too hot, and your downstairs feels too cold from trying to cool the upstairs, you need a zone control system.
You like one temperature, your spouse prefers a different setting. And your kids complain it’s too hot, HVAC zoning is the answer.
A zone control system is the perfect solution for homes with multiple floors or sprawling layouts. With zoning, you create different temperature zones under the same roof, reducing your energy use and lowering utility bills. Homes with concrete slab foundations, large windows, high ceilings, or finished rooms in the attic or basement are good candidates for a zone control system.
Our certified, knowledgeable professionals at Ongaro & Sons can install a zone control system that enables you to control temperatures in different areas of your home simultaneously with just the touch of a button.
We provide our extensive HVAC services, including zone control systems, throughout Marin, Sonoma, and Napa counties.
All work is performed under active California contractors license #215233.
About Zone Control Systems
Creating a zone control system in your home is no DIY job. Our certified professionals understand how to install the mechanical dampers, thermostats, and remote-control board to make it work.
How Does Zoning Work?
Our heating and cooling specialists will install dampers in your ductwork and mount a control panel near your furnace. Thermostats are placed in each zone. Turn your second floor into one zone, your downstairs into a second zone, and the master bedroom into a third one.
You Create the Zones
You decide the location and size of each zone with guidance from our professionals. You can define a zone as a room, several rooms, or even an entire floor in your multi-story home.
Zoning Saves Money
Why heat or cool an empty room? HVAC zoning puts you in control of your home's energy use, saving you money on utilities.
Opening and Closing Vents Is Not HVAC Zoning
You might think closing and opening vents creates HVAC zoning. It does not, your HVAC system is still working at full speed, creating stress on your equipment. It does not cause your furnace or air conditioner to produce less hot or cold air. It can also contribute to leaky ductwork and low airflow.
Can I Create HVAC Zoning Without Ductwork?
The answer is yes. Ductless mini split systems allow you to set up multiple air handling units throughout your the North Bay home. Each air handler acts as a zone, complete with a thermostat. Anyone living in a large home with more than one floor will benefit from zoning.
Zone Control Installation
Our heating and cooling specialists will install dampers in your ductwork and mount a control panel near your furnace or air conditioner. Thermostats are placed in each zone. Turn your second floor into one zone, your downstairs into a second zone, and the master bedroom into a third one.
When you adjust each thermostat, the control panel opens or closes dampers to distribute hot or cold air where it is needed. Set the thermostats in each zone, and relax. Plus, you can control the thermostats using your smartphone or tablet.
Opening and closing registers throughout your home will not create a zone control system because adjusting the registers does not cause your furnace or air conditioner to produce less hot or cold air. Closing the registers could contribute to leaky ductwork and low airflow.
By comparison, a zone control system not only redistributes airflow by operating dampers but also controls your HVAC system, telling it when to run and when to shut down, which eliminates unnecessary energy expenses.
Zone Control Repairs
If you detect an issue with your zone control system, such as rattling noises or unresponsive dampers, give us a call. Our team will evaluate the problem and fix it promptly with as little disruption to your home as possible.
Don’t wait for a minor problem to evolve into a costly and inconvenient repair. We promise never to replace a part unless necessary or if we can demonstrate significant cost savings.
We work around your schedule, and you can take comfort in knowing our team always follows best practices in terms of safety and conduct on every service call.
Zone Control System Maintenance
Planned maintenance ensures your HVAC system is running efficiently and that you are getting the most out of your investment in home comfort. It also allows our professionals to prevent potential problems by catching them right away. Your heating and cooling system is a significant purchase. Protect your investment with planned maintenance.
Be sure to ask about our Ongaro Maintenance Plans designed to save you money. We tailor these maintenance plans to fit your budget and needs. Enjoy priority service and discounts on labor, parts, and repair. Give us a call for a free consultation.
Schedule Your Zone Control System Service
Adding a zone control system to your home in Petaluma, Cloverdale, Forestville, or any of the other neighboring communities in the North Bay creates a more comfortable setting for everyone. We proudly serve Sonoma, Marin, and Napa counties. 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 Zone Control Systems
Zoning fixes an uneven house only when the duct system can support it, and that is the part worth checking first.
Schedule Service →We check whether zoning is the right fix at all
Rooms that never get comfortable are often a duct sizing or leakage problem, not a control problem. Zoning on top of an undersized branch makes the symptom worse.
Bypass handled deliberately
Closing zones raises static pressure. How that is managed decides whether the equipment lasts, and it is the detail most often got wrong.
Staged or variable equipment where it suits the design
Zoning works best with equipment that can modulate. Manufacturer tier standing with Trane and Mitsubishi Electric means the matched options are actually available to us.
Controls set up so the house is usable
A zoning system nobody understands gets overridden and then ignored. Setup and handover are part of the job.
HVAC and electrical under one licence holder
Zone panels and dampers need power and controls wiring. Holding C-20 and C-10 keeps that on one visit.
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
Can I add zoning to my existing HVAC system?
Yes, adding zoning to an existing HVAC system is possible, but it depends on your current system and the type of zoning you’d like to implement. Sometimes, adjustments to your ductwork may be required, as well as the installation of new thermostats and dampers.
Can I still create a zone control system if my home has no ductwork?
Yes! Ductless mini split systems allow you to set up multiple air handlers throughout your home. Each air handler acts as a zone, complete with a thermostat.
How many zones can I have in my home?
The number of zones depends on your HVAC system, ductwork layout, and personal preferences. Most homes benefit from 2–4 zones , but larger properties may have more. Your HVAC technician can help you design the ideal configuration.
Is my home a good candidate for zoning?
Most homes with forced-air HVAC systems can benefit from zoning, especially if you have rooms that are consistently too hot or too cold, a multi-story layout, or areas that aren't used frequently.