Commercial Building Management System (BMS) Services in Orange

Commercial BMS services tailored for Orange facilities

#1 AC Guys delivers end‑to‑end Building Management System (BMS) solutions for commercial properties in the City of Orange and across Orange County. From design and integration to commissioning and lifecycle care, our engineering‑first approach improves comfort, indoor air quality (IAQ), and energy performance while simplifying day‑to‑day operations for building managers and facility teams.

• BMS design/build and upgrades for ground‑up and retrofit projects
• HVAC controls integration for VRF, rooftops, air handlers, VAV, ERV/HRV
• Open protocols: BACnet/IP, BACnet MS/TP, and Modbus TCP/RTU
• Dashboards, alarms, trending, and analytics for data‑driven decisions
• IAQ and ventilation strategies: CO₂, VOC, PM2.5 sensors and control
• Energy optimization aligned with California Title 24 requirements
• Commissioning, retro‑commissioning, and sequence tuning
• Planned maintenance and rapid service for critical environments

Fujitsu expertise you can trust

Our engineers are factory‑trained by Fujitsu in Japan, with hands‑on experience integrating Fujitsu VRF and mini‑split systems into enterprise BMS environments via BACnet or Modbus gateways. We develop clear, robust sequences of operation that unlock precise zoning, stable temperatures, and optimized energy use—without sacrificing reliability. In addition to Fujitsu, our family team has manufacturer training from Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China), enabling us to navigate complex multi‑brand sites while keeping your Fujitsu assets performing at their best.

Healthy air by design

Healthy indoor air is our mission. Your BMS becomes the control center for smarter ventilation, filtration, and dehumidification strategies. We implement demand‑controlled ventilation using CO₂ and occupancy data, coordinate with filtration targets (e.g., MERV‑13), and stabilize humidity to support comfort and wellness. With real‑time IAQ monitoring and alerts, your team can respond quickly and maintain consistent conditions across zones, floors, and multi‑building campuses.

Codes, compliance, and documentation

Our designs are aligned with California Title 24 and industry best practices, and we coordinate with your design team, test‑and‑balance contractor, and AHJ to streamline approvals. Expect clear submittals, point lists, network topologies, and as‑built documentation. We deliver owner training and O&M materials so your staff can operate the system with confidence on day one.

Our process for dependable outcomes

• Assessment: site walk, data gathering, and existing controls review
• Strategy: sequences of operation focused on comfort, IAQ, and energy
• Open integration: BACnet/Modbus device mapping and robust networking
• Installation: neat wiring, labeling, panel layout, and gateway configuration
• Commissioning: point‑to‑point testing, trend validation, alarm strategy
• Training: hands‑on operator sessions and quick‑reference guides
• Support: proactive maintenance and responsive service when you need it

Industries we serve in Orange

Office and mixed‑use buildings, medical and dental suites, retail and restaurants, education and municipal facilities, light industrial and tech, hospitality, and specialized environments that demand stable comfort and reliable IAQ.

Engineered for scale and security

Whether you operate a single property or a regional portfolio, we design BMS architectures that scale securely—segmenting networks, prioritizing resilience, and providing role‑based access so operators see what they need without unnecessary complexity. Trend logs and analytics convert raw data into actionable insights that lower lifecycle costs.

Family values, enterprise results

As a fourth‑generation family of engineers with 80+ years of combined experience, we bring the craftsmanship of a boutique firm with the discipline required for large and complex projects. You get a partner who listens, solves hard problems, and stays accountable long after the ribbon‑cutting.

Service area

Based in Greater Los Angeles, #1 AC Guys serves the City of Orange and all of Orange County, with extended coverage across Los Angeles County, Ventura County, and Western Riverside County. We coordinate schedules to minimize downtime and keep your operations on track.

Get started

If you’re planning a new build, modernizing controls, or integrating Fujitsu VRF into a unified BMS, we’re ready to help. Tell us about your goals for comfort, air quality, and energy—#1 AC Guys will design a solution that fits your timeline, budget, and long‑term strategy.