Commercial Control Systems in Fontana, CA

Healthy indoor air and tight control over energy spend start with a robust commercial control system. In Fontana’s demanding commercial environments—logistics hubs, manufacturing floors, healthcare suites, classrooms, and retail—our engineered BAS/DDC solutions bring stability, transparency, and efficiency to every zone.

Why advanced controls matter

Modern facilities need more than thermostats. You need coordinated ventilation, filtration, and temperature control that respond to occupancy, weather, and air quality in real time. We deploy strategies such as demand‑controlled ventilation, economizer optimization, and variable speed control to minimize energy waste without sacrificing comfort or indoor air quality.

As a fourth‑generation family business with 80+ years in engineering, #1 AC Guys treats every project like an engineering problem to be solved with data, precision, and accountability. Our mission is healthy air for healthy lives—delivered with practical, maintainable solutions.

What we deliver

• System design and engineering: load/zone analysis, control sequences, network layout, and submittals tailored to your facility and code requirements.
• BAS/DDC implementation: intuitive dashboards, trending, alarms, schedules, and role‑based access for operators and service teams.
• VRF and ductless integration: seamless controls for systems from Fujitsu, Mitsubishi Electric, Midea, Gree, and Haier, including heat recovery, zoning, and advanced setpoint strategies.
• Zoning and airflow management: VAV/VVT strategies, pressure control, and ventilation balancing for consistent comfort.
• Indoor air quality monitoring: CO2, temperature, humidity, and optional particulate/VOC sensing to maintain healthy, code‑aligned air.
• Energy management: peak‑demand strategies, optimization of economizers and VFDs, and actionable insights via trends and reports.
• Open‑protocol connectivity: BACnet/IP, BACnet MS/TP, and Modbus integration to protect your investment and avoid vendor lock‑in.
• Retro‑commissioning and upgrades: modern controls for aging equipment to unlock efficiency, reliability, and visibility.
• Remote monitoring and support: secure cloud access, alerts, and performance reviews to keep your building running at its best.

Our process

1) Discovery and goals: we align on comfort, IAQ, efficiency, and operational priorities.
2) Field assessment: point‑by‑point survey of equipment, sensors, and networks.
3) Controls design: sequences of operation, network topology, and device schedules.
4) Installation: clean, labeled wiring; panel fabrication; safety and QA checks.
5) Commissioning: sensor calibration, point‑to‑point verification, functional testing, and documentation.
6) Training and handoff: clear operator training and easy‑to‑use guides.
7) Ongoing optimization: seasonal tuning, trend reviews, and continuous improvements.

Technologies we implement

• Sensors and analytics: CO2‑based ventilation control, temperature/humidity control, and fault detection using data trends.
• Economizers and free cooling: maximize outdoor air when conditions are favorable while ensuring filtration and comfort.
• Variable frequency drives: precise fan and pump control for energy savings and noise reduction.
• IAQ enhancements: filtration strategies, ventilation rate verification, and control logic that prioritizes fresh air without over‑ventilating.
• User‑friendly interfaces: mobile‑ready dashboards, schedules, and alarm management for quick, confident decisions.

Industries we serve in Fontana

• Distribution and logistics centers seeking reliable comfort and ventilation for large, shifting occupancies.
• Manufacturing and light industrial spaces balancing process loads and worker safety.
• Healthcare and medical offices requiring stringent IAQ and documentation.
• Education, offices, retail, hospitality, and multi‑tenant properties focused on comfort, uptime, and energy control.

Compliance and best practices

Our designs align with California Title 24 energy requirements and industry guidance such as ASHRAE 62.1 for ventilation and ASHRAE 90.1 for energy efficiency. By emphasizing open protocols like BACnet and Modbus, we help future‑proof your system and maintain flexibility for expansions or upgrades.

Why #1 AC Guys

• 80+ years of engineering across four generations; family‑owned and operated.
• Factory‑trained at the manufacturing plants of Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China).
• Specialists in complex commercial projects, retrofits, and mission‑critical environments.
• Meticulous commissioning and documentation for long‑term reliability and easier maintenance.
• Serving Los Angeles County and nearby areas, including Fontana, Orange County, Ventura County, and Western Riverside County.

Get started

Ready to modernize your building’s controls? Schedule a site assessment with #1 AC Guys. We’ll map your current systems, define performance goals, and provide a clear, engineered plan—prioritizing healthy air, predictable comfort, and measurable savings.