Pasadena Commercial HVAC Control Systems

An Engineering‑First Approach to Commercial HVAC Controls

Your building is unique. We start with a deep engineering review—load profiles, equipment capabilities, ventilation needs, and utility rates—then design a control strategy that meets your comfort and IAQ goals with the fewest moving parts. Our 4th‑generation family team brings 80+ years of engineering experience to commercial HVAC, with factory training from Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Hier (China). The result: dependable controls, clear sequences, and cleaner air.

We integrate AC PRO-sourced hardware and accessories to ensure serviceability, local parts availability, and long-term reliability—so your facilities team isn’t locked into a single vendor path.

What We Deliver in Pasadena

• Design-build DDC and retrofit controls for RTUs, heat pumps, VRF/VRV, boilers, chillers, and ventilators
• BACnet and open-protocol integration for multi-brand equipment
• Sequence of operations engineering for comfort, IAQ, and energy efficiency
• Demand-controlled ventilation, economizer logic, and CO2/PM2.5 monitoring
• Smart zoning, scheduling, setback, and occupancy-based control
• Alarming, remote monitoring, dashboards, and reporting
• Commissioning, functional performance testing, and documentation
• Ongoing maintenance, fine-tuning, and energy optimization

Whether you are upgrading legacy thermostats or deploying a new DDC backbone, we create a migration plan that limits downtime and preserves as much of your existing investment as possible.

Platforms, Protocols, and Interoperability

Open, serviceable systems are core to our philosophy. We leverage BACnet, Modbus, and secure IP-based communications to connect a spectrum of equipment—including VRF by Fujitsu, Mitsubishi Electric, Midea, Gree, and Hier—alongside rooftop units, make-up air, and exhaust systems.

We program sequences that your team can read and maintain: plain-English points lists, labeled wiring, and clear graphics. If you already have a BMS, we integrate; if you don’t, we deploy a right-sized platform that won’t burden your budget.

AC PRO Compatibility & Local Sourcing

To keep your system maintainable, we specify and source AC PRO-compatible controls, enclosures, sensors, actuators, and accessories when appropriate. Local parts availability minimizes downtime and keeps total cost of ownership in check.

From rooftop economizer retrofits to VRF interface modules, our Pasadena crews build reliable panels and field wiring that technicians can service quickly—today and ten years from now.

Healthy Air, Healthy Business

Our mission is healthy air for healthy lives. We combine proper ventilation, filtration, and precise control of temperature and humidity to support occupant well-being and productivity. That means smarter outside air strategies, verified airflow, and continuous monitoring where it matters.

• Verified ventilation rates aligned with your operational schedule
• MERV/filtration strategies supported by fan control and pressure monitoring
• Humidity control for comfort and process needs
• Continuous IAQ sensing (CO2, particulates, VOCs) with actionable alerts

Industries We Serve in Pasadena and Greater LA

We support offices, retail, restaurants, medical and dental clinics, schools, places of worship, light industrial, and multi-tenant buildings. Multi-site owners benefit from standardized controls, remote visibility, and consistent comfort across locations.

Our Process

• Assessment & goals: site walk, data review, and stakeholder interviews
• Engineering & proposal: scope, drawings, and a clear sequence of operations
• Implementation: neat installation, thorough labeling, and safety-first practices
• Commissioning: point-to-point testing, trend logs, and staff orientation
• Support: proactive maintenance, seasonal tuning, and analytics-driven savings

You’ll receive as-built documentation, graphics, and a maintenance plan tailored to your staffing and budget. We design for clarity—so your team can operate with confidence.

Maintenance, Upgrades, and Emergency Response

Control systems are living systems. We provide routine calibration, firmware updates, sensor replacement, and optimization based on trend data. When operations change—tenant turnover, new schedules, added equipment—we adapt sequences accordingly.

Need help now? Our Pasadena team responds quickly with targeted diagnostics that get you from alarm to resolution fast.
We stock critical spares and rely on AC PRO’s local supply chain to cut lead times.

Compliance, Safety, and Documentation

We build to code, emphasize electrical safety and lockout/tagout procedures, and ensure your system changes are documented. Clear labeling and accessible panels mean safer service for years to come.

Why #1 AC Guys

• 4th‑generation family of engineers with 80+ years of engineering expertise
• Factory-trained by Fujitsu, Mitsubishi Electric, Midea, Gree, and Hier
• Specialists in complex commercial projects and phased retrofits
• AC PRO-compatible solutions for reliable local parts support
• Serving Pasadena, Los Angeles County, and nearby Orange, Ventura, and Western Riverside counties

Ready to modernize your commercial HVAC control system in Pasadena? Let’s design a smarter, healthier, and more efficient building—without disrupting your business.

Contact #1 AC Guys to schedule an on-site assessment and receive a clear, engineering-driven plan tailored to your facility.