Commercial Boiler Installation in Ontario, CA

From warehouses and logistics hubs near Ontario International Airport to offices, retail, education, hospitality, and light industrial, #1 AC Guys delivers AC PRO commercial boiler installations built for Southern California demands. Our mission is healthy, comfortable indoor environments that lower total cost of ownership—without surprises.

What we install and integrate

• Condensing and non‑condensing AC PRO commercial boilers
• Primary–secondary or variable primary hydronic piping with proper delta‑T management
• Pumps, VFDs, air/dirt separators, expansion tanks, and balancing valves
• Low‑NOx solutions to meet local air quality requirements
• Direct digital controls, BAS integration (BACnet/Modbus), and outdoor reset
• Side-stream filtration and water treatment for longevity and warranty protection

Every system is engineered to maintain design temperatures under peak load while minimizing short cycling, protecting heat exchangers, and optimizing part‑load efficiency.

Our process for reliable outcomes

• Site assessment and goals: We document loads, existing conditions, electric and gas service, venting pathways, and control needs.
• Engineering and selection: Right-size AC PRO boilers, develop hydronic schematics, specify pumps/VFDs, relief and venting, and control sequences.
• Transparent proposal: Clear scope, equipment schedules, schedule milestones, and pricing—no guesswork.
• Professional installation: Safe rigging, seismic anchoring where required, clean piping, insulation, flue design, and electrical/control terminations.
• Start-up and commissioning: Factory-grade procedures—combustion tuning, flow verification, sensor calibration, alarms, and safety checks.
• Handover and training: O&M manuals, as‑built drawings, setpoints, and operator walk‑through to ensure your team owns the outcome.

We prioritize coordination with other trades and your facility schedule to keep operations running. When needed, we stage temporary heat to avoid downtime.

Technical advantages you can measure

• Energy efficiency: Condensing operation with proper return water temps and outdoor reset to maximize savings.
• Comfort and control: Stable supply temps mean more even heating across zones and air handlers.
• Lower emissions: Low‑NOx strategies aligned with local air district requirements.
• BAS integration: Seamless data and control via BACnet/Modbus for trending, alarms, and optimization.
• Longevity: Correct water treatment, air elimination, and flow protection extend equipment life.

Our engineers are factory-trained by Fujitsu, Mitsubishi Electric, Midea, Gree, and Haier. That training, paired with four generations of engineering experience, shows up in the precision of our design and the quality of our commissioning.

Compliance and permitting

We handle permit packages, submittals, and inspections for Ontario and the Greater Los Angeles area. Expect code‑compliant combustion air, venting, gas piping, electrical, seismic bracing, and Title 24 documentation as applicable. We align with local air quality requirements for low‑NOx and help you prepare records for your facility binder.

Industries and applications

• Distribution centers and warehouses
• Commercial offices and retail centers
• Education and municipal facilities
• Hospitality and mixed‑use
• Healthcare clinics and labs (non‑acute)

Whether replacing failed boilers, upgrading to condensing equipment, or adding hydronic heat to existing AHUs, we design around your building’s realities—existing shafts, roof structure, clearances, and service access—so maintenance stays simple.

AC PRO supply and project delivery

We source equipment and hydronic components through the AC PRO distribution network to keep lead times tight and parts support strong. For AC PRO‑branded commercial boiler solutions, our team selects matched accessories and controls to streamline start‑up and future service.

Service area

Headquartered in Greater Los Angeles, we serve Ontario, CA and nearby areas across Los Angeles County and surrounding regions, including Orange County, Ventura County, and Western Riverside County.

Maintenance and support

Protect your investment with planned maintenance: combustion analysis and tuning, gasket and relief checks, sensor verification, filter and strainer service, and water chemistry control. Proactive care preserves efficiency, avoids nuisance lockouts, and extends lifespan.

Get a precision proposal

Ready to modernize your building heat with AC PRO commercial boilers in Ontario? Contact #1 AC Guys for a site assessment and an engineering‑driven plan that balances first cost, energy performance, and lifecycle value.

• Fast, clear proposals for replacements and retrofits
• Design‑build support for new construction
• Commissioning reports and training at handover

Choose the 4th‑generation family engineers trusted for complex projects—and enjoy healthier air, steadier comfort, and lower operating costs.