Commercial DDC (Direct Digital Controls) in Ontario, CA

Engineered DDC Solutions for Demanding Commercial Facilities

Complex buildings in Ontario, CA need more than off‑the‑shelf controls. Our engineers design, program, and commission Direct Digital Controls that synchronize AC PRO‑supplied HVAC equipment with smart ventilation, energy management, and facility dashboards. The result: healthier indoor air, lower lifecycle costs, and confident, transparent operations.

What We Do

• Design‑build DDC for new construction, tenant improvements, and expansions
• Retrofit of legacy pneumatics and outdated BAS to modern, open‑protocol platforms
• BACnet/IP, BACnet MS/TP, and Modbus integration with AC PRO‑aligned equipment
• Custom sequences of operation for IAQ, demand control ventilation, dehumidification, and economizers
• Graphics, trending, analytics, and alarm hierarchies with remote access
• Commissioning, re‑commissioning, and ongoing optimization
• Service, maintenance, and operator training

AC PRO Integration—Done Right

We build control strategies that complement AC PRO‑supplied systems, leveraging reliable components and clean installation practices. Whether your facility uses packaged RTUs, split systems, or VRF/ducted solutions, we integrate, tune, and document the controls so your equipment performs as designed—day one and year five.

Factory‑Trained on Leading Technologies

Our team is factory‑trained by Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). This hands‑on knowledge helps us implement robust DDC for advanced VRF and ducted systems while keeping your BAS open, secure, and serviceable.

Healthy Air Is Our Mission

Healthier air for a healthier life guides every project decision. We deploy CO2 and IAQ sensors, dynamic ventilation, filtration upgrades, and smart economizer logic to maintain clean, comfortable spaces. Better air quality boosts productivity, supports wellness, and reduces complaints—without sacrificing efficiency.

California‑Smart Compliance and Efficiency

Our engineering‑first approach helps owners and GCs address California performance expectations, including energy codes such as Title 24. We document sequences, verify setpoints, calibrate sensors, and deliver the trend logs you need to prove performance and drive continuous improvement.

Industries We Serve in Ontario and the LA Metro

• Office, retail, and mixed‑use
• Industrial, logistics, and light manufacturing
• Healthcare clinics and labs
• Hospitality and entertainment
• Education and public facilities

Why #1 AC Guys

• Fourth‑generation family of engineers with 80+ years in engineering
• Specialists in large, complex commercial control projects
• Open protocols with clear documentation and owner training
• Robust commissioning for reliable starts and fewer callbacks
• Lifecyle support: proactive maintenance, updates, and optimization

Our Design–Build and Retrofit Process

Discovery and Assessment
We audit existing equipment, controls, and ventilation strategies, then capture operational goals.

Engineering and Submittals
We develop drawings, I/O schedules, sequences of operation, and network topologies aligned with AC PRO‑supplied equipment.

Installation and Programming
Panels, wiring, and devices are installed with clean labeling. Our programmers implement sequences, graphics, alarms, and user permissions.

Testing and Commissioning
We verify points, tune loops, validate economizers, confirm IAQ strategies, and hand over an as‑built package with training.

Monitoring and Optimization
We provide ongoing support, trending reviews, and seasonal performance tuning to keep your building efficient and comfortable.

Controls Capabilities

• DDC for RTUs, AHUs, VRF/VRV, heat pumps, boilers, and pumps
• Demand control ventilation (CO2‑based) and advanced economizer logic
• Static pressure, supply air temp, humidity and reheat control
• Scheduling, setpoint management, alarm routing, and remote access
• Energy dashboards, KPI tracking, and fault detection workflows

Service Area

We serve Ontario and the greater Los Angeles metro, including Los Angeles County and nearby areas such as Orange County, Ventura County, and Western Riverside County.

Bring Us Your Most Complex Challenge

#1 AC Guys thrives on technically demanding commercial DDC projects. If your Ontario facility needs a dependable BAS partner focused on AC PRO‑aligned systems, healthy indoor air, and measurable savings, we’re ready to help.

Contact us to schedule a site walk, receive a clear scope and sequence of operation, and start your project with a team of engineers who deliver reliable results.