Commercial Boiler Repair in Long Beach, CA

Commercial boiler problems don’t just affect comfort—they disrupt schedules, tenant satisfaction, and your bottom line. #1 AC Guys delivers dependable commercial boiler repair in Long Beach with the depth of a fourth‑generation family of engineers and 80+ years of combined engineering experience. We bring a methodical approach to diagnostics and repair, ensuring your system heats evenly, operates safely, and runs efficiently.

What we repair in commercial boiler and hydronic systems

• Burners, ignition systems, flame sensors, and gas train components
• Heat exchangers: efficiency loss, scaling, and thermal stress issues
• Circulator and booster pumps, VFDs, couplings, and seals
• Expansion tanks, air separators, automatic air vents, and balancing valves
• Safety devices: relief valves, low‑water cutoffs, pressure controls
• Controls: thermostats, aquastats, sensors, staging and lead/lag logic
• Boiler management and BAS integration, communication faults
• Water chemistry problems: corrosion, scaling, and oxygen ingress
• Piping and valves: leaks, traps, isolation valves, mixing valves
• Venting and combustion air issues affecting draft and combustion quality

Whether your building uses a single boiler or a multi‑boiler plant with staging, we align repairs with your load profile, zoning, and control strategy to stabilize operation and reduce energy waste.

Our process for faster, smarter repairs

• Listen and inspect: We capture recent alarms, symptoms, and maintenance history, then perform a full visual and operational assessment.
• Measure and verify: Combustion analysis, temperature differentials, pressure readings, amp draws, and water chemistry checks to pinpoint root causes.
• Targeted repairs: We correct the failure and any upstream/downstream contributors to prevent repeat issues.
• Optimization: Post‑repair tuning for combustion, circulation, and controls to improve efficiency and comfort.
• Clear documentation: Findings, repairs completed, and preventive recommendations so you can plan ahead.

Our team is trained by manufacturers at Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China). Coupled with generations of engineering practice, this training strengthens our command of advanced controls and system design—essential for reliable boiler diagnostics in modern commercial buildings.

Why businesses choose #1 AC Guys

• 4th‑generation family of engineers with 80+ years in engineering
• Commercial expertise across offices, retail, healthcare, education, hospitality, and industrial
• Strong capability with complex, multi‑zone and BAS‑integrated systems
• Code‑ready workmanship and attention to California energy standards
• Health‑focused mission: better indoor conditions for comfort and productivity
• Practical guidance to cut energy costs and avoid unplanned downtime

Common boiler issues we fix in Long Beach buildings

• No heat or insufficient heat in certain zones
• Short‑cycling and temperature swings from control or flow problems
• Kettling, rumbling, or whistling due to scale or poor water circulation
• Air binding, cold radiators, or imbalanced hydronic loops
• Pump failures, leaks, seal wear, or noisy bearings
• Sensor drift, aquastat faults, and communication errors with BAS
• Low water cutoff trips, relief valve discharge, or pressure anomalies
• Combustion and venting issues affecting safety and efficiency

We pair each repair with actionable next steps—such as water treatment adjustments, control setpoint tuning, or minor piping corrections—to extend equipment life and stabilize performance.

Serving Long Beach and surrounding areas

#1 AC Guys services commercial properties across Long Beach, including Downtown, East Village, Bixby Knolls, Wrigley, Belmont Shore, Naples, Los Altos, and nearby Signal Hill, Lakewood, Carson, and Seal Beach. Our broader service area covers Los Angeles County and nearby regions such as Orange County, Ventura County, and Western Riverside County.

Proactive care for reliability and efficiency

A well‑repaired boiler is only the beginning. We help owners and facility teams prevent recurring issues through water chemistry management, air elimination, proper expansion control, and verified flow. Fine‑tuning burner setup and circulation can significantly reduce fuel use and improve comfort, especially during shoulder seasons. Our goal is a stable, efficient plant that supports healthy indoor environments and predictable operating costs.

Healthy air and comfortable temperatures matter—to tenants, guests, patients, students, and teams. Our family’s mission is healthier indoor environments for healthier lives, and it guides every decision we make on your project.

Get started today

Experiencing heat loss, rising energy bills, or recurring boiler alarms? Contact #1 AC Guys for commercial boiler repair in Long Beach. We’ll assess your system, explain your options, and deliver a durable fix that supports uptime and efficiency. Request your service visit today and put our fourth‑generation engineering expertise to work for your building.