Commercial Centrifugal Chiller Maintenance in Ontario, CA

Your centrifugal chiller is the heart of your cooling plant. Our maintenance plans are engineered to prevent failures before they start, while improving kW/ton and stabilizing supply air temperatures for healthier indoor environments. We combine data‑driven diagnostics with meticulous procedures to deliver repeatable outcomes—measured, documented, and optimized over time.

What’s included in our commercial centrifugal chiller maintenance

• Oil system care: oil analysis (acidity, moisture, metals), filter changes, heater checks, and leak inspection
• Refrigerant management: charge verification, moisture control, leak detection, and EPA‑compliant handling
• Heat‑exchange performance: tube cleaning, eddy current testing, approach temperature trending, and water treatment coordination
• Mechanical integrity: shaft alignment, bearing inspections, vibration analysis, surge/root‑cause investigations
• Electrical and controls: MCC inspection, megger testing, contactors, sensors, safeties, VFD checks, control loop tuning
• Plant optimization: condenser water setpoints, chilled water resets, sequencing, demand‑limiting, and part‑load efficiency
• Seasonal services: start‑up/lay‑up, freeze protection, tower interface checks, glycol verification

Our engineer‑led teams apply ASHRAE best practices and deliver clear, actionable reports after every visit: baseline readings, trends, exceptions, and recommendations prioritized by risk and ROI.

Why Ontario facilities choose #1 AC Guys

• Fourth‑generation family of engineers with 80+ years in engineering, built for large and complex projects
• Commercial focus: hospitals, life sciences, industrial, data centers, hotels, education, retail, and Class A offices
• AC PRO–supported parts and supplies for faster turnarounds and consistent quality
• Factory‑informed methods: training completed at Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China)
• Healthy air mission: maintenance plans aligned with IAQ and comfort targets, not just runtime
• 24/7 emergency response and rapid diagnostics to protect uptime during critical loads

We don’t just maintain equipment—we optimize plants. Expect fewer nuisance trips, better stability at part load, and documented energy savings that make your finance team smile.

Flexible maintenance programs that fit your plant

From fixed‑scope PM to performance‑driven service agreements, we tailor frequency and tasks to your chiller tonnage, hours, water quality, and load profile. If you manage multiple buildings, we can align schedules and reporting across your portfolio for consistent compliance and budgeting.

Data you can act on

Every visit produces structured data: pressures, temperatures, vibration, oil labs, approach temps, and control parameters. We trend the numbers, benchmark performance, and flag issues before they affect tenants or production. When a repair is needed, you’ll see options, timelines, and impact—so decisions are easy.

Parts, speed, and compliance

We maintain strong access to AC PRO–supplied components, consumables, and accessories, helping reduce lead times and downtime. Our teams follow EPA refrigerant regulations and local codes, coordinate permits when required, and maintain chain‑of‑custody documentation for environmental compliance.

Coverage area

Based in Greater Los Angeles, we serve Ontario, CA and nearby Inland Empire corridors, as well as Los Angeles County and adjacent areas including Orange County, Ventura County, and Western Riverside County.

Onboarding and first service

• System discovery: review of submittals, logs, alarms, prior maintenance, and BMS strategies
• Baseline assessment: performance testing, vibration snapshot, oil sample, controls verification
• Quick wins: cleaning, calibration, and setpoint adjustments to stabilize efficiency
• Plan delivery: a clear maintenance roadmap with KPIs, schedule, and budget forecasts

If you’re battling rising kW/ton, nuisance surge, oil contamination, or tube fouling, we’ll isolate root causes and restore stable, efficient operation.

Emergency service, done right

When a critical alarm hits, our 24/7 team triages remotely when possible, then dispatches with the right parts and testing tools to minimize downtime. After action, you receive a concise incident report and prevention plan.

Your next step

Request a site walk in Ontario, CA. We’ll review your plant, confirm AC PRO–supported parts availability, and deliver a maintenance plan that protects uptime, improves IAQ, and lowers total cost of ownership—engineered for your building, and backed by four generations of expertise.

#1 AC Guys—engineers first, HVAC always. Healthy air, reliable cooling, and measurable results for commercial centrifugal chillers across Ontario and Greater Los Angeles.