Los Angeles Commercial Chiller Repair

Expert Repair for Air- and Water-Cooled Chillers

When your commercial chiller falters, your entire building feels it—comfort drops, energy costs spike, and critical operations are at risk. #1 AC Guys delivers precise, engineering-led chiller repair in Los Angeles and across Southern California. As a fourth‑generation family HVAC company with 80+ years of hands-on experience, we handle the toughest challenges on centrifugal, screw, and scroll machines for offices, healthcare, hospitality, education, retail, industrial facilities, and data centers.

Factory-Trained, Brand-Agnostic

Our engineers have trained with leading global manufacturers, including Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). We apply OEM best practices while servicing all major brands and controls. That means accurate diagnostics, correct tolerances, and reliable repairs that stand up to real-world load conditions.

What We Repair

• Air-cooled and water-cooled chillers: centrifugal, screw, and scroll
• Compressor failures, hard starts, high amp draw, short cycling
• Refrigerant leaks, charge optimization, subcooling/superheat issues
• Condenser and evaporator problems, tube fouling and scaling
• Oil system issues: pressure, acidity, contamination, and separator faults
• VFD and soft-starter faults; motor and bearing problems
• Sensors, actuators, expansion valves, and control logic errors
• Pump and flow issues; delta-T performance and setpoint tuning

Our Diagnostic Process

We don’t guess—we measure. Expect a structured approach that includes trend review, vibration and thermography checks where applicable, refrigerant circuit analysis, oil quality evaluation, electrical testing, and controls verification. We address the root cause, validate performance under load, and document results so you can trust the fix.

Performance and Energy Optimization

Beyond restoring uptime, we tune your system for efficiency: proper condenser water temperatures, improved heat transfer, optimized chilled water setpoints, and refined staging logic. These steps often cut operating costs, stabilize comfort, and extend equipment life.

Preventive Maintenance Plans

Stop problems before they start with seasonal inspections, tube cleaning, leak checks, oil analysis, controls calibration, safety device testing, and performance trending. Proactive care reduces surprise outages and protects your capital investment.

Large and Complex Projects Are Our Specialty

From multi-chiller plants and tenant improvement retrofits to mission-critical facilities, we coordinate repairs, commissioning, and changeovers with minimal disruption. Our team communicates clearly with facility managers, GCs, and building engineers to keep your timeline and budget on track.

Industries We Serve

• Commercial offices and high-rises
• Healthcare and life sciences
• Hospitality and entertainment
• Education and campuses
• Retail, mixed-use, and malls
• Industrial, manufacturing, and data centers

Service Area

We proudly serve Los Angeles, Los Angeles County, and nearby regions including Orange County, Ventura County, and Western Riverside County. If you operate anywhere in Greater Los Angeles or Southern California’s nearby corridors, we’re ready to help.

Why #1 AC Guys

• 4th‑generation, family-run HVAC team with 80+ years of engineering excellence
• Factory-trained technicians who follow OEM and ASHRAE-aligned best practices
• Clear communication, documented findings, and performance verification
• Rapid dispatch, minimal downtime, and solutions built for longevity
• A mission centered on healthier indoor air and healthier lives

Get a Smart Repair—Not Just a Quick Fix

Protect your building, your occupants, and your bottom line. Contact #1 AC Guys for commercial chiller repair in Los Angeles today. We’ll assess your system, provide a transparent plan, and restore reliable, efficient cooling—so your business can keep moving.