Commercial Chiller Repair in Ontario, CA

Rapid Response for Ontario’s Mission‑Critical Facilities

When a chiller fails, every minute counts. Our local dispatch covers Ontario, CA and the wider Inland Empire with 24/7 emergency service. We stabilize your plant quickly, protect product and process, and restore capacity with safety‑first procedures and EPA 608‑certified technicians. From the airport logistics corridor to large distribution centers, we keep essential cooling online.

Expert Diagnostics That Solve Root Causes

We don’t guess—we measure. Expect comprehensive thermographic checks, vibration analysis, oil/refrigerant sampling, controls trend review, and water‑side inspections. Our engineers isolate mechanical, electrical, and hydronic issues to prevent repeat failures. You get a clear report, photos, and prioritized steps before any repair begins—no surprises, just data‑driven answers.

Systems and Components We Repair

Air‑cooled and water‑cooled chillers (centrifugal, screw, scroll, and magnetic‑bearing) across commercial and industrial sites. Common repairs include: compressor rebuild/replacement, VFD and soft‑starter issues, refrigerant leaks and charging, tube cleaning and eddy‑current testing coordination, oil system service, sensors and EXV/EEV valves, microprocessor and BMS communications, pump and flow problems, cooling tower and condenser efficiencies, freeze protection, and water treatment alignment. We service all major brands and controls platforms.

OEM‑Trained, Multi‑Brand Expertise

Our fourth‑generation family of engineers has 80+ years of combined field experience and factory trainings with global manufacturers including Fujitsu, Mitsubishi Electric, Midea, Gree, and Haier, plus extensive service experience across leading chiller brands such as Trane, York, Carrier, and Daikin. That depth helps us handle complex retrofits, hard‑to‑source parts, and legacy systems with confidence.

Industries We Serve in Ontario and the Inland Empire

Manufacturing and process cooling, logistics/warehousing, healthcare and labs, data centers, higher education and K‑12 campuses, hospitality, offices, and retail. We understand load profiles, indoor air quality requirements, and uptime SLAs unique to each sector—and we tailor repairs and commissioning to those realities.

Our Commercial Chiller Repair Process

1) Immediate triage and safety lockout/tagout.
2) Diagnostics and performance benchmarking (kW/ton, approach temps, delta‑T, flow).
3) Written scope with fixed or not‑to‑exceed pricing.
4) Repair with OEM‑grade parts and best‑practice procedures.
5) Start‑up, verification, and trend logging.
6) Post‑repair optimization and maintenance roadmap to prevent recurrence.

Preventive Maintenance & Compliance

Protect your investment with seasonal PM: tube cleaning, oil and refrigerant health checks, controls calibration, strainers and filtration, tower and condenser care, and flow validation. We align with ASHRAE best practices, California Title‑24, and SCAQMD/EPA requirements. Documentation is delivered for audits, warranties, and energy programs, helping you reduce risk and cost over the long term.

Energy Optimization and Retrofits

Beyond repairs, we cut operating cost with VFD upgrades, condenser fan retrofits, high‑efficiency compressors, waterside economizers, and advanced sequencing. Our team integrates chillers with your BMS for demand‑based staging, resets, and alarms. Expect lower kWh/ton, smoother operation, and improved redundancy—all verified with before/after data.

Why #1 AC Guys

• Fourth‑generation, family‑owned HVAC engineering team focused on large and complex projects.
• Fast, 24/7 response in Ontario, CA and surrounding Inland Empire corridors.
• Transparent diagnostics, clear scopes, and OEM‑grade parts.
• Safety‑driven, licensed, bonded, insured; EPA 608‑certified techs.
• Mission: healthier air and reliable comfort through high‑performance mechanical systems.

Service Area

We proudly serve Ontario, Rancho Cucamonga, Fontana, Chino/Chino Hills, Upland, Pomona, and the broader Inland Empire, with extended coverage across Los Angeles County and nearby regions including Orange County, Ventura County, and Western Riverside County. If your facility sits between LA and the IE, we likely have a truck nearby.

Get Priority Service Today

Need commercial chiller repair in Ontario, CA right now? Contact #1 AC Guys for rapid diagnostics and a no‑surprise repair plan. Keep your production, patients, students, and guests safe and comfortable—while lowering energy and avoiding repeat breakdowns. We’re ready 24/7 to restore capacity and optimize performance.