Commercial Modbus Integration for AC PRO‑Compatible HVAC in Los Angeles

Commercial buildings in Los Angeles run on data. When your HVAC equipment speaks Modbus fluently, your BAS gains real‑time insight for smarter comfort, lower energy use, and fewer surprises. #1 AC Guys connects AC PRO‑compatible systems and multi‑brand HVAC into a unified Modbus architecture that is reliable, maintainable, and easy to expand as your facility grows.

What We Integrate

• VRF and inverter mini‑split systems (Fujitsu, Mitsubishi Electric, Midea, Gree, Haier)
• AC PRO‑supplied and AC PRO‑compatible rooftop units and air handlers
• Ventilation and DOAS units, energy recovery, and make‑up air
• Boiler, heat pump, and condenser controls with Modbus points
• Room controllers, thermostats, and sensors with Modbus capability

Our engineers design and implement Modbus RTU (RS‑485) and Modbus TCP/IP networks, point maps, and control strategies that your BAS can trust—without guesswork or trial and error.

Scope of Work You Can Count On

• Site survey and submittal review: equipment models, available registers, and integration path
• Network design: topology, addressing, termination, and bandwidth planning
• Gateway selection and configuration when required (bridge, aggregation, or protocol conversion)
• Register mapping: points, scaling, units, and read/write permissions
• Alarm and trend strategy: thresholds, deadbands, and timeouts
• Panel, wiring, labeling, and as‑built documentation
• On‑site commissioning: validation with your BAS, witness testing, and operator handoff
• Training and support options, including after‑hours coverage by agreement

Technical Depth for Complex Buildings

• Modbus RTU over RS‑485: biasing, termination, shield management, segment length, and device counts
• Modbus TCP/IP: IP planning, subnets, routing, and secure segmentation with IT/OT coordination
• Point engineering: holding/input registers, coils, signed vs unsigned, scaling, and unit normalization
• Control writes: safe setpoint limits, priority handling, and fallback strategies
• Reliability: watchdogs, retries, timeouts, and failover behavior under BAS or network loss
• Documentation: readable point lists, register maps, and annotated as‑builts for long‑term maintenance

Because Modbus is only as good as the details, we validate end‑to‑end behavior: correct values, consistent units, stable communications, and safe control writes. That means fewer callbacks and a smoother handoff to operations.

AC PRO and Multi‑Brand Expertise

We integrate AC PRO‑compatible equipment every day and understand how to bring diverse systems together cleanly. Our team is factory‑trained with Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China), giving us a deep understanding of VRF and inverter logic, service menus, and integration best practices for these manufacturers.

Industries We Serve

• Office, retail, and mixed‑use properties
• Restaurants and hospitality
• Healthcare clinics and wellness spaces
• Education and public facilities
• Industrial, warehouse, and tech suites

Whether the goal is comfort, air quality, or energy transparency, we tune the Modbus layer to deliver data your BAS can act on—helping occupants breathe easier and work better.

Our Process and Timeline

1. Discovery and scope confirmation: equipment list, controls goals, BAS requirements, and schedule alignment.
2. Engineering and build: network design, gateway configuration, panel and wiring, and point mapping documentation.
3. Commissioning and handoff: functional testing with your BAS, alarm and trend validation, operator training, and as‑builts.

Typical small to mid‑size projects complete in days to weeks. Large, multi‑building campuses scale with phased milestones to match your construction or retrofit schedule.

Deliverables You Receive

• Detailed register map with addresses, types, scaling, units, and read/write permissions
• Network diagram and addressing plan
• Alarm and trend matrix for your BAS
• Commissioning checklists and test results
• As‑built documentation and labeled wiring for serviceability
• Operator quick‑start and training session

Service Area

We proudly serve Los Angeles County and nearby regions, including Orange County, Ventura County, and Western Riverside County. Local teams, fast response, and deep familiarity with Southern California codes and jobsite practices keep your project on track.

Why #1 AC Guys

• 4th‑generation family of engineers with 80+ years in engineering
• Commercial integration focus with proven delivery on complex projects
• Factory‑trained with Fujitsu, Mitsubishi Electric, Midea, Gree, and Haier
• Clean documentation and commissioning your operators will trust
• Options for after‑hours and rapid response by agreement

Healthy air and high‑performance buildings go hand in hand. Our mission is healthier indoor air and reliable comfort through engineering‑first HVAC integration.

Get Started

Tell us about your AC PRO‑compatible equipment, BAS platform, and timeline. We will provide a clear scope, fixed pricing options when feasible, and a delivery plan that minimizes downtime. Let #1 AC Guys bring Modbus clarity to your Los Angeles commercial property—so your building runs smarter every day.