Pasadena Commercial Boiler Repair for AC PRO Systems

Commercial Boiler Repair in Pasadena—Engineered for Results

When your building relies on hydronic heat, every hour of downtime matters. #1 AC Guys pairs advanced diagnostics with proven field practices to bring commercial boilers back to peak performance. We service AC PRO–supplied components and integrate them cleanly with your existing distribution loops, pumps, and controls—so your plant runs safely, efficiently, and predictably.

Our process begins with a systematic assessment: combustion analysis, flue draft and gas pressure checks, heat exchanger inspection, electrical and control logic testing, and hydronic balance verification. We then present clear findings and options—repair, optimize, or retrofit—so you can make confident, budget‑smart decisions.

Issues We Solve Quickly and Correctly

• No heat or intermittent heat in zones
• Lockouts, nuisance trips, and sensor faults
• Inefficient combustion and high fuel bills
• Short‑cycling and staging problems
• Pump failures, cavitation, or air binding
• Leaky valves, expansion tanks, or relief valves
• Scaling, corrosion, and poor water treatment
• BMS integration and control sequencing errors

We service standard and condensing commercial boilers, hot‑water and low‑pressure steam systems, primary/secondary and variable flow arrangements, and multi‑boiler plants. Our goal is stable heat, long equipment life, and predictable operating costs.

AC PRO–Supplied Systems, Seamlessly Integrated

AC PRO is a trusted Southern California source for HVAC equipment and parts. We repair commercial boilers and hydronic components commonly distributed through AC PRO and integrate them with your building’s piping, controls, and air‑side systems. Whether we’re replacing a control board, re‑piping a primary loop, or commissioning a new pump set, our focus is system performance and code‑compliant safety.

Need fast parts? We coordinate sourcing to minimize downtime and get your Pasadena facility back to normal operations quickly.

Fourth‑Generation Engineers—80+ Years of Know‑How

#1 AC Guys is a family business now in its fourth generation. Our 80+ years of engineering experience means we think beyond the symptom to the system—load profiles, hydraulics, controls logic, and lifecycle costs. Our engineers have trained at manufacturer facilities including Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China), bringing modern control strategies and rigorous commissioning practices to every hydronic project.

This engineering depth is why clients trust us with complex campuses, production facilities, and medical environments where reliability and indoor air quality truly matter.

Industries and Properties We Serve

• Office and mixed‑use buildings
• Hospitals, clinics, and labs
• Hotels and hospitality venues
• Retail centers and restaurants
• Schools and universities
• Industrial and light manufacturing
• Religious and community facilities

From compact plants to multi‑building central systems, we tailor solutions to your operational needs, occupancy patterns, and energy goals.

Preventive Maintenance and Retrofits

Ongoing maintenance protects your fuel budget and extends equipment life. We design PM programs that include combustion tuning, water treatment checks, safety verification, and seasonal optimization. When it’s time to modernize, we handle control upgrades, high‑efficiency condensing boiler retrofits, pump and VFD improvements, and BMS integrations—planned to minimize disruption.

Results you can expect: steadier supply temperatures, fewer call‑outs, lower energy use, and improved comfort and air quality throughout the building.

Service Area

We proudly serve Pasadena and greater Los Angeles County, and we also cover nearby regions including Orange County, Ventura County, and Western Riverside County. Frequent Pasadena corridors include Old Pasadena, Playhouse District, South Lake, East Pasadena, and surrounding business parks and campuses.

When to Call #1 AC Guys

• Spiking gas bills or declining efficiency
• Frequent lockouts, alarms, or reset cycles
• Uneven heating across floors or zones
• Unusual noises, vibration, or cavitation
• Visible leaks, corrosion, or scale buildup
• Expansion tank or relief valve issues
• Plans to expand loads or integrate new controls

If you notice any of the above, schedule a diagnostic visit. We will document the root cause and provide a phased plan—immediate stabilization, short‑term reliability fixes, and long‑term efficiency upgrades.

Our Mission: Healthy Air, Reliable Heat

Clean, healthy indoor air depends on stable, well‑tuned heating systems. Every repair we make prioritizes safety, ventilation requirements, and filtration strategy—so people in your building can breathe easier while you keep operations running smoothly.

Need commercial boiler repair for AC PRO–supplied systems in Pasadena? Contact #1 AC Guys for an engineer‑led assessment and a clear, cost‑effective path to dependable heat.

Call today to book service or request a proposal. We’re ready to solve the complex problems others avoid—and to keep your plant performing day after day.