Rialto Commercial AHU Repair for AC PRO Systems

Your commercial air handler is the heart of building comfort and indoor air quality. When an AC PRO AHU struggles—poor airflow, rising energy bills, inconsistent temperatures, or alarms—our engineering‑driven approach restores performance while protecting occupant health and productivity.

Our commercial AHU repair process

• Assessment & IAQ check: airflow, static pressure, temperatures, humidity, filtration, and outside air settings.
• Root‑cause diagnostics: motors, VFDs, bearings, belts, pulleys, coils, drains, dampers, actuators, sensors, and controls logic.
• Transparent options: repair vs. replace components with clear timelines and cost/benefit insights.
• Precision repair & verification: factory‑level workmanship, then performance testing and balancing.
• Commissioning & documentation: settings, readings, and maintenance notes to prevent repeat issues.

We tune the entire system, not just a part—ensuring fans, coils, dampers, economizers, and controls work together for reliable comfort and energy efficiency.

Common AC PRO AHU issues we fix

• Motors, bearings, and alignment causing noise, heat, or trips.
• VFD faults, parameter errors, and hard‑starting fans.
• Controls, actuators, and sensors (temperature, pressure, humidity) causing unstable operation.
• Coil leaks or fouling reducing capacity and air quality.
• Economizer and outside air damper failures impacting ventilation and compliance.
• Belts, pulleys, and sheaves causing low airflow and vibration.
• Drainage, pan sanitation, and microbial growth control.
• Filter upgrades (including MERV 13+) and air sealing to improve IAQ and efficiency.
• Sound/vibration mitigation and fan rebalancing.

Our mission is healthy air for healthy life. That means targeting clean coils, correct ventilation, proper filtration, and verified pressurization—then documenting the results.

Engineering advantage you can measure

As a family business now in our 4th generation, we bring 80+ years of engineering to every commercial service call. Our team is factory‑trained by Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China). For large or complex AHUs—rooftop, split, or built‑up systems—we apply manufacturer‑grade procedures, precision instruments, and commissioning practices that extend equipment life and stabilize operating costs.

Code, safety, and performance

We service Rialto facilities with attention to California energy goals and safety requirements—economizer function, ventilation targets, filtration strategies, and control sequences that match your occupancy. We protect assets and people with lockout/tagout discipline, clean work areas, and step‑by‑step verification. The result: compliant operation, predictable comfort, and fewer surprises.

Smart upgrades and retrofits

• EC/HP motors and VFD tuning for lower kWh without sacrificing airflow.
• Enhanced filtration and coil sanitation to improve IAQ and reduce maintenance.
• DDC integration and sequence corrections to stabilize temperature and humidity.
• UVGI at coils and drains to limit biofilm and odors.
• Heat‑recovery and economizer optimization for better ventilation at lower cost.

Upgrades are proposed only when they deliver measurable ROI or health benefits. We present clear data so you can decide with confidence.

Rialto coverage and rapid dispatch

#1 AC Guys serves Rialto and the Greater Los Angeles region, including Los Angeles County, Orange County, Ventura County, Western Riverside County, and nearby cities. We keep common AC PRO AHU components on hand or source quickly to shorten downtime and get your operations back on track.

Frequently asked questions

• Q: Can you repair my AC PRO AHU without disrupting business hours?
  A: We coordinate service windows, isolate zones, and stage parts to minimize interruptions.
• Q: How do you verify the repair worked?
  A: We record pressures, airflow, temperatures, fan speed, and controls status, then share a clear report.
• Q: Do you handle complex control issues?
  A: Yes—our engineers troubleshoot sensors, actuators, sequences, and VFD logic to stop recurring faults.
• Q: Can you improve indoor air quality?
  A: We optimize ventilation, filtration, coil cleanliness, and drain sanitation—and confirm results with measurements.

Ready to restore your AC PRO air handler?

If your Rialto facility has rising energy bills, hot/cold spots, alarms, or poor IAQ, our engineering team is ready to help. Schedule a professional AHU assessment today and get data‑driven repair options, clear pricing, and performance you can trust—because healthy air is the foundation of a healthy workplace.