Commercial Heating Repair & Installation
Commercial Heating Services in Marin, Sonoma & Napa County
When it comes to your commercial heating needs, you only want to work with the best, Ongaro & Sons.
We are the North Bay’s leader in commercial heating, ventilation, and air conditioning (HVAC) systems. We specialize in commercial HVAC installation, replacement, repair, and maintenance. No matter what your commercial heating needs may be, from small retail stores to large office buildings and industrial facilities, we have the experience and technical expertise to service a wide range of commercial heating systems.
We work with all major brands and heating technologies, including commercial furnaces, heat pumps, and boilers, tailoring our services to fit your specific building and usage requirements.
Call us today at 415-741-2820 for a consultation. You will never go wrong when you hire Ongaro & Sons.
Reliable Commercial Heating in Marin, Sonoma & Napa County
Our licensed technicians are trained to handle everything from system diagnostics and repairs to annual preventative maintenance and full heating system installations.
At Ongaro & Sons, we know that reliable heating is critical to your business. That’s why we prioritize fast response times, transparent pricing, and high-quality workmanship to keep your system running at peak performance. With decades of experience and a commitment to exceptional service throughout Sonoma, Napa, and Marin counties, you can count on us to deliver heating solutions that meet your needs and exceed your expectations.
Commercial Heating Installation and Replacement
When your California company’s heating system requires a retrofit or a complete replacement, our Ongaro & Sons experts will design and install the perfect system for your needs.
Investing in a new system is a larger expense, but we will always work with you to find the most cost-effective and energy-efficient solution.
We know not every replacement is planned. Sometimes, a repair evolves into an unexpected full replacement. Integrity is very important to us as a company; you can rely on what we tell you. We will never sell you anything you don’t need or anything substandard.
Our professionals only offer the highest quality in both equipment and materials. Your new commercial heating system will last for years with the proper professional maintenance. It’s an investment you can count on.
Commercial Heating Repairs and Maintenance
Commercial Heating Repairs
If your current commercial heating system isn’t heating your building and, in turn, your employees and customers as it should, or if it’s beginning to make odd noises, talk to our professionals immediately. Putting off a needed HVAC repair only makes the repair bigger and more expensive.
We will quickly diagnose and repair the issue so your California company’s productivity is affected as little as possible. Our professionals repair all brands and models, indoor and rooftop units (RTUs) alike. We want your system’s efficiency where it needs to be, so you can keep your bottom line where it needs to be.
5 Telltale Signs Your Commercial Heating Needs Repair
- Unusual noises: Banging, clanking, grinding, screeching, or whistling sounds from the unit or ductwork can point to loose components, failing motors, worn-out bearings, or even issues with the blower fan.
- Poor airflow: Noticeably weak airflow coming from the vents can be caused by clogged air filters, blockages in the ductwork, or a failing blower motor.
- Short cycling: If your heating system turns on and off much more frequently than usual, it’s struggling to reach or maintain the set temperature.
- Excessive condensation: Visible water pooling around your heating unit or excessive condensation can indicate a clogged condensate drain line, a cracked heat exchanger, or other serious issues.
- Inconsistent or no heat: If certain areas of your building are cold while others are warm, or if the system simply isn’t producing heat at all, it’s a clear indicator of a problem.
Commercial Heating Maintenance
Proper preventative maintenance for your commercial system is a must for lower energy bills, fewer unexpected costly repairs, and a longer system life span. Having our commercial HVAC professionals regularly inspect and clean your system is a smart business move.
Thinking that regular maintenance is a place to cut financial corners is a mistake. It only leaves your system unprotected and you with more repairs, higher energy bills, and a needed system replacement sooner than planned.
The best way to protect your commercial system is with professional maintenance. We offer a custom commercial maintenance plan to help you take care of your maintenance.
Talk to us today about how we can help you.
Schedule Your Commercial Heating Service
Whether you need fast commercial heating repairs, routine maintenance, or a retrofit/new system, our skilled team is ready to help. 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.
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 Commercial Heating
Commercial heating failures are rarely about the burner. They are about what nobody looked at last spring.
Schedule Service →Rooftop and packaged units serviced properly
Most North Bay commercial heating is rooftop or packaged equipment. Controls, economisers and staging are where the efficiency and the failures actually live.
Trane Comfort Specialist
Trane's top dealer tier. On commercial equipment that matters for parts availability and warranty documentation as much as for installation.
Boilers covered by the right licence class
Ongaro & Sons holds C-4 for boiler and steam fitting alongside C-20. Buildings on hydronic heat get a contractor licensed for it rather than one working around the edges.
Planned shutdowns instead of surprise ones
Changeouts and major service get scheduled around your operating hours, with the sequence agreed in advance.
Documented for the inspector and for your records
Permits pulled, inspections met, paperwork handed over.
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.
Special Offers
Enjoy our seasonal promotions and save on your next service. Limited-time offers, don’t miss out!
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Read MoreFrequently Asked Questions
Is it better to repair or replace my commercial heating and cooling system?
Generally, repairs might be the best option if your commercial HVAC system is relatively new or the damage is minor. However, upgrading to a new system might be more economical and efficient for more severe issues, especially those not covered under warranty.