Pasadena Commercial Chiller Repair

Why Pasadena Chooses #1 AC Guys for Chiller Repair

As a fourth-generation, family-owned HVAC company, #1 AC Guys brings more than 80 years of engineering expertise to commercial chiller systems. Our factory-trained technicians (Fujitsu, Mitsubishi Electric, Midea, Gree, Haier) excel at diagnosing and repairing complex issues quickly—minimizing downtime while protecting your equipment investment. We proudly serve Pasadena and surrounding areas in Los Angeles County, with rapid dispatch to South Pasadena, Altadena, San Marino, Arcadia, Glendale, and beyond.

Chillers We Service

• Air-cooled and water-cooled chillers
• Centrifugal, screw, and scroll designs
• Single- and multi-chiller plants with BMS integration
• Primary/secondary, variable primary, and thermal storage configurations

Common Problems We Fix—For Good

• Capacity loss, high head pressure, nuisance trips
• Refrigerant leaks, oil analysis issues, abnormal superheat/subcooling
• Fouled condenser/evaporator tubes, poor heat transfer, scaling
• Electrical faults, VFD problems, control sensor/calibration errors
• Water-side imbalances, pump and cooling tower coordination

Our approach targets the root cause using precision instrumentation—pressure/temperature trending, clamp meters, vibration and sound analysis, thermal imaging, and data logging tied to your control system.

Our Repair and Diagnostic Process

1. Interview and Snapshot: We review alarms, runtime history, and operating setpoints with your team or BMS.
2. Safety and Compliance: Lockout/tagout, refrigerant handling (EPA 608), and site-specific safety protocols.
3. System Testing: Verify flows, delta-T, approach temps, oil condition, current draw, VFD behavior, and control logic.
4. Root Cause Report: You receive clear findings, photos, and options ranked by risk, cost, and energy impact.
5. Code-Compliant Repairs: Title 24 and local code alignment, with documentation for facility records.

24/7 Emergency Chiller Service

When comfort, process cooling, or uptime is on the line, we mobilize quickly—day or night. We triage, stabilize, and restore operation while planning long-term fixes that prevent repeat failures. Priority scheduling is available for maintenance partners.

Preventive Maintenance that Pays Back

Consistent maintenance reduces energy waste, breakdowns, and unexpected capital spend. Our PM programs include:

• Seasonal start-ups/shut-downs and performance benchmarking
• Tubing cleaning and descaling; coil cleaning and fin straightening
• Refrigerant testing, leak detection, and charge optimization
• Oil sampling, filter/drier changes, electrical torque and IR scans
• Controls calibration, sensor verification, and alarm rationalization
• Water-side checks: flow, ΔT, valve function, and cooling tower coordination

You get actionable reports and trendlines to guide budget planning and energy strategy.

Retrofits and Energy Upgrades

Modernize your plant for better reliability and lower kWh/ton. We design and implement:

• VFD upgrades, soft starters, and compressor optimization
• High-efficiency condenser fans and tube bundle improvements
• Advanced controls, demand limiting, and optimal sequencing
• Refrigerant conversions aligned with environmental regulations
• Heat recovery and free-cooling strategies where applicable

All work aligns with California Title 24, local codes, and utility rebate opportunities where available.

Industries We Serve

• Class A offices and mixed-use buildings
• Hospitals, clinics, and life sciences labs
• Hotels, venues, and entertainment
• Higher education and K–12 campuses
• Manufacturing, warehouses, and data rooms
• Retail centers and multi-tenant properties

Healthy Air, Productive Spaces

Our mission is healthy air for healthy lives. Properly operating chillers are central to comfort and indoor air quality. We address coil hygiene, filtration impacts on load, humidity control, and ventilation strategies coordinated with your air handlers to maintain safe, comfortable environments for occupants and processes.

Credentials and Assurances

• Family-owned, fourth generation—80+ years of engineering expertise
• Factory-trained by leading global manufacturers
• Licensed, bonded, insured; EPA 608-certified
• Safety-first culture with documented procedures
• Service for all major brands and control platforms

Pasadena & Greater Service Area

Local to Pasadena, we also cover South Pasadena, Altadena, San Marino, Arcadia, Glendale, Alhambra, and the wider Los Angeles County. Need multi-site support? We extend service to Orange County, Ventura County, and Western Riverside County.

Get a Same-Day Assessment

Stop repeat alarms and rising energy bills. Schedule a same-day diagnostic or request a tailored maintenance plan for your plant. With #1 AC Guys, you get clear communication, transparent pricing, and repairs that last—so your building stays comfortable and your operations stay on track.