Commercial Building Management System (BMS) in Downey

For commercial properties in Downey, a modern Building Management System (BMS) is the backbone of comfort, energy performance, and operational uptime. #1 AC Guys brings 80+ years of engineering expertise to design, integrate, and maintain open‑protocol building automation that keeps occupants comfortable, protects equipment, and provides the data you need to make smart decisions.

What we deliver

• Design‑build BMS and BAS for new construction and major renovations
• Retrofits and migrations from proprietary systems to open BACnet and Modbus
• Controls integration for rooftop units, VRF, heat pumps, boilers, chillers, VAVs, and fans
• Energy management, demand response, and Title 24 controls strategies
• Indoor air quality (IAQ) sensing and demand‑controlled ventilation
• Dashboards, trend logs, alarms, and fault detection and diagnostics (FDD)
• Commissioning, re‑commissioning, and sequence optimization
• Ongoing service, monitoring, and lifecycle planning

Open protocols and seamless integration

We build on interoperable standards such as BACnet/IP, BACnet MS/TP, Modbus RTU, and Modbus TCP to unite legacy and new equipment under one reliable interface. Our engineers trained at Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China), enabling deep, practical knowledge of leading HVAC platforms and controls. From packaged RTUs and VRF to plant equipment and meters, we design gateways and sequences that keep your system flexible for future growth.

Healthier air by design

Healthy air for healthy lives is our mission. We apply IAQ best practices with sensors for CO2, VOCs, and particulates, demand‑controlled ventilation, smart economizer logic, and filtration schedules that support comfort and wellness goals while managing energy. Our control sequences are developed to align with industry guidelines and local code requirements, helping you document compliance and performance.

Our process

• Assessment and roadmap: On‑site survey, data review, and gap analysis
• Engineering and design: Controls drawings, network topology, and sequences of operation
• Integration and installation: Panel build, field wiring oversight, and device commissioning
• Verification and handoff: Functional performance testing, trend validation, and staff training
• Service and optimization: Remote monitoring, analytics, and continuous improvements

Industries we serve

• Office, retail, and mixed‑use buildings
• Medical offices, clinics, and labs
• Education and community facilities
• Industrial, manufacturing, and warehouses
• Hospitality and entertainment venues
• Multifamily common areas and amenities

Controls that cut complexity

We simplify daily operations with intuitive dashboards, role‑based access, trend charts, schedules, and alarm routing. From load shedding and setpoint strategies to VFD optimization and chilled water reset, our BMS sequences are purpose‑built to reduce energy spend, extend equipment life, and maintain steady comfort across zones, floors, and buildings.

Cyber‑aware and resilient

Your automation network matters. We apply secure architectures, device segmentation, and credential management practices in line with current industry guidance. Our approach supports safe remote access, clear change logs, and reliable backups so you can recover quickly if something goes wrong.

Downey and Greater LA coverage

We serve commercial clients in Downey and throughout Los Angeles County, with extended coverage into Orange County, Ventura County, and Western Riverside County. Expect knowledgeable local support and engineers who understand regional codes, climate, and utility programs.

Frequently asked questions

What is the difference between BMS and BAS?
BMS and BAS are often used interchangeably. Both refer to centralized controls that monitor and automate building systems such as HVAC, ventilation, energy meters, and more. We design open systems so you are not locked into proprietary hardware.

Can you integrate our existing equipment?
Yes. We routinely connect BACnet and Modbus devices, add gateways where needed, and migrate proprietary elements to open protocols in phases to control cost and risk.

How do you demonstrate results?
We verify sequences during commissioning, enable trend logs and dashboards, and provide reports that document comfort, IAQ, and energy performance. This creates a baseline for ongoing optimization.

Ready to modernize your commercial Building Management System in Downey? Contact #1 AC Guys for a site assessment and a tailored BMS plan that fits your facility, budget, and growth goals.