Anaheim Commercial AHU (Air Handling Unit) Repair

Why Anaheim businesses choose #1 AC Guys for AHU repair

We are a family business in its fourth generation, with 80+ years of engineering expertise focused on reliability, safety, and indoor air quality. Our engineers are factory‑trained by Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). That background helps us quickly troubleshoot complicated Air Handling Unit issues and implement durable, OEM‑aligned solutions for offices, hospitality, retail, education, healthcare, entertainment, and light industrial facilities.

• Deep diagnostics that find true root causes, not just symptoms
• IAQ‑first mindset to protect occupant health and comfort
• Energy‑aware repairs aligned with California Title 24
• Seamless BMS integration and controls troubleshooting
• Clean workmanship, clear documentation, and minimal disruption

What we repair and optimize on commercial AHUs

• Supply/return/relief fans, motors, bearings, belts, and sheaves
• VFDs, motor starters, contactors, wiring, and overload protection
• Control boards, PLCs, sensors, thermostats, and BMS communications
• Economizer dampers, linkages, actuators, and mixed‑air strategies
• Cooling/heating coils, coil cleaning, leaks, and fin straightening
• Filter racks, seals, MERV upgrades, and air leakage remediation
• Drain pans, traps, condensate pumps, and microbial mitigation
• Reheat coils, electric heaters, and freeze‑stat protection
• Casing insulation, access doors, gaskets, and sound attenuation

Our process for faster, safer, code‑aligned repairs

Step 1 — Safety and site assessment: lockout/tagout, risk review, and system history check.
Step 2 — Instrumented testing: airflow, static pressure, temperature/enthalpy, vibration, and electrical health.
Step 3 — Controls logic: verify sequences, sensors, setpoints, and economizer operation; coordinate with BMS.
Step 4 — Clear options: provide repair paths (OEM parts or approved equivalents) with lifecycle and energy impact.
Step 5 — Precision repair: fix, calibrate, align, and balance; correct airflow and ensure leak‑tight filter seals.
Step 6 — Commissioning: document readings, verify sequences, and hand off a concise, actionable report.

Indoor Air Quality (IAQ) and healthy buildings

Our mission is healthy air for a healthy life—at work and at home. For commercial AHUs, we prioritize ventilation effectiveness and contaminant control. We evaluate outdoor air intake, mixed‑air temperature, filtration effectiveness, and duct leakage to improve both comfort and wellness. Options include better filter fit and MERV upgrades, coil and drain sanitation, UV‑C treatment in appropriate applications, and sequence adjustments that follow ASHRAE 62.1 guidance for ventilation. The result: cleaner air, fewer complaints, and more stable operations.

Preventive maintenance to reduce downtime

Stopping failures before they start is the best ROI. Our maintenance plans are built around data: vibration trending, motor amperage, VFD fault logs, and differential pressure across filters and coils. We combine that with routine tasks to keep your AHU reliable and efficient.

• Quarterly/biannual inspections tailored to load and environment
• Precision belt tensioning, bearing lubrication, and alignment
• Coil cleaning and straightening to recover heat‑transfer capacity
• Filter strategy and change intervals set by actual pressure drop
• Drain pan cleaning, trap verification, and microbial prevention
• Economizer functional testing and damper calibration
• Sensor calibration and control sequence verification
• Energy tune‑ups to reduce kWh without sacrificing IAQ

Industries and building types we serve in Anaheim

Office campuses and corporate spaces, hotels and entertainment venues, retail and shopping centers, schools and universities, healthcare clinics and labs, warehouses and light manufacturing. Whether it’s a single rooftop AHU or a central plant with multiple handlers and complex economizer strategies, we have the engineering depth to restore stable performance fast.

Service area and response times

#1 AC Guys serves Anaheim and all of Orange County, with rapid dispatch from Greater Los Angeles. Nearby coverage includes Fullerton, Orange, Santa Ana, Garden Grove, Buena Park, and Placentia—plus Los Angeles County, Ventura County, and Western Riverside County. Request priority scheduling for mission‑critical spaces or planned shutdown windows to minimize business disruption.

What you can expect from our team

• Straightforward pricing and clear scope before work begins
• OEM‑aligned parts and procedures from factory‑trained engineers
• Detailed post‑repair reports with before/after readings
• Recommendations that balance uptime, IAQ, and energy costs

Ready to restore your AHU—and your peace of mind

If your Anaheim facility is facing AHU alarms, poor airflow, hot/cold spots, high energy bills, or persistent IAQ complaints, we can help. Contact #1 AC Guys to schedule a comprehensive diagnostic or to set up a preventive maintenance program that keeps your air clean, your system efficient, and your occupants comfortable.