Commercial Control Systems in Fullerton

When your building depends on consistent comfort, clean air, and predictable energy costs, the control system is the heartbeat. #1 AC Guys specializes in Commercial Control Systems in Fullerton that are engineered to be clear, scalable, and dependable — so your operations run smoothly day after day.

What we deliver

• Design‑build and design‑assist controls for new construction and retrofits
• AC PRO‑compatible integration and parts sourcing aligned to project specs
• BAS upgrades, point‑to‑point commissioning, and graphics/dashboards
• Sequencing for VRF, VAV, RTUs, split systems, chillers, and boilers
• Demand control ventilation with CO2 and IAQ sensors for healthier spaces
• Economizer logic, VFD control, and energy optimization strategies
• Remote monitoring and analytics to prevent downtime
• Planned maintenance and rapid‑response service

Every project starts with your operational goals — comfort, compliance, air quality, energy targets — and translates them into precise sequences of operation that your team can understand and maintain.

Our engineering‑first approach

As a fourth‑generation family of engineers with 80+ years in engineering, we approach controls like a mission‑critical system. We model the airside and waterside interactions, document setpoints and safeties, and verify each control point during commissioning. That discipline results in fewer surprises, smoother turnovers, and better long‑term performance.
Our team has received factory training with Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). This background informs our work on complex VRF and multi‑split applications, where details determine efficiency and comfort.

AC PRO in your ecosystem

We integrate AC PRO solutions and components where they fit best, aligning procurement and design with your budget and spec. Whether the scope calls for new controls hardware, replacement sensors, or retrofit kits, we build a cohesive, serviceable platform that your facilities team can trust.

Technologies we work with

• VRF and multi‑split systems with centralized and local control
• VAV with reheat, CO2‑based ventilation, and supply air reset
• Rooftop units with economizers and advanced safeties
• Chiller and boiler plant optimization, primary‑secondary, and reset logic
• Energy dashboards, alarming, and trending for actionable insight
• Protocols: BACnet/IP, BACnet MS/TP, Modbus RTU/TCP, and compatible gateways
• Modern, web‑based BAS front ends for multi‑site visibility

Our process

• Assess: Site walk, data collection, and gap analysis
• Engineer: Controls architecture, sequence of operations, and submittals
• Integrate: Panel build, wiring, programming, and graphics
• Commission: Point‑to‑point testing, documentation, and training
• Maintain & Optimize: Proactive care, tuning, and lifecycle planning

We communicate clearly at each step, so owners, GCs, and facility managers can make informed decisions without guesswork.

Healthy air is our mission

Healthy indoor air supports healthy lives. We implement IAQ strategies — filtration upgrades, CO2‑based ventilation control, temperature and humidity management, and sensor validation — to help your building meet standards while keeping occupants comfortable and productive.

Industries we serve

• Offices and coworking
• Retail and restaurants
• Warehouses and light industrial
• Healthcare and clinics
• Education and campus facilities
• Multifamily common areas and amenities

Why #1 AC Guys

• Fourth‑generation family business with 80+ years in engineering
• Proven on large, complex commercial control projects
• Factory training: Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), Haier (China)
• AC PRO‑compatible integration and thoughtful product selection
• Clear documentation, training, and owner support
• Fast‑response service and long‑term maintenance programs

Service area

Headquartered in Los Angeles, we proudly serve Fullerton and all of Orange County, as well as Los Angeles County, Ventura County, and Western Riverside County. If your facility is nearby and needs a capable controls partner, we are ready to help.

Let’s talk air and control

Whether you are planning a new build, a phased retrofit, or a BAS upgrade, #1 AC Guys delivers Commercial Control Systems in Fullerton that align engineering, budget, and outcomes. Contact us to schedule a site assessment and discover how a smarter control strategy can elevate comfort, improve indoor air quality, and reduce operating costs — without adding complexity.