Commercial AHU (Air Handling Unit) Repair in Los Angeles

Commercial AHU repair in Los Angeles demands more than swapping parts — it requires engineering‑grade diagnostics that address root causes. At #1 AC Guys, our fourth‑generation family of engineers brings 80+ years in engineering to every Air Handling Unit we service, so your building gets sustainable performance, healthier air, and predictable operating costs.

What we repair in commercial AHUs

• Supply/return fans, motors, sheaves, belts, and bearings
• VFDs, contactors, relays, and safeties
• Chilled water and hot water coils, DX coils, drain pans, and condensate management
• Economizers, outside air dampers, actuators, and linkages
• Filtration systems (MERV upgrades, HEPA housings) and IAQ enhancements
• UV‑C, energy‑recovery wheels, humidifiers/dehumidifiers
• Sensors and controls (temperature, humidity, pressure, airflow)

Signs your AHU needs repair

• Hot/cold spots, low airflow, or uneven pressurization
• Unusual fan noise, vibration, or belt squeal
• High humidity, odors, or declining indoor air quality
• Coil icing, leaks, or persistent condensate issues
• Rising energy bills or frequent equipment short cycling

Our diagnostic and repair process

• Assessment: We document symptoms, service history, and operating setpoints.
• Testing: Airflow, static pressure, temperature split, vibration, and electrical checks.
• Root‑cause analysis: We identify underlying issues — not just the failed component.
• Plan and pricing: Clear options prioritizing safety, uptime, IAQ, and energy impact.
• Repair and optimization: Precision parts replacement, alignment, calibration, and balancing.
• Verification: Post‑repair performance benchmarks so you see measurable results.

Because downtime matters, our team arrives prepared with the right tools and critical spares to accelerate turnaround. For aging or oversized equipment, we can also recommend targeted upgrades — coil restoration, VFD tuning, economizer repair, and filtration/IAQ improvements — to extend AHU life while improving comfort and efficiency.

Why Los Angeles businesses choose #1 AC Guys

• 80+ years in engineering across four generations of our family
• Factory‑level training by Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China)
• Deep expertise with large, complex commercial systems
• Mission‑driven focus on healthy indoor air for a healthy life
• Transparent recommendations and clean, safety‑first workmanship
• Coverage across Los Angeles County, plus Orange County, Ventura County, and Western Riverside County

From office towers and campuses to healthcare, retail, and light industrial facilities, we tailor AHU repair to your building’s load profile, ventilation requirements, and maintenance budget. Our goal is to stabilize comfort, protect occupants and assets, and reduce energy waste — without unnecessary downtime.

Service area

We provide commercial AHU repair throughout Los Angeles County and nearby regions, including Orange County, Ventura County, and Western Riverside County. If you manage multiple sites across Southern California, ask about coordinated scheduling to minimize disruptions.

Frequently asked questions

Do you work on all types of commercial AHUs?
Yes — rooftop and indoor units, packaged and custom, VAV and constant volume, DOAS/make‑up air, chilled‑water and DX systems.

Can you improve indoor air quality while repairing?
Often, yes. We evaluate filtration, outside air, coil cleanliness, and control sequences to recommend practical IAQ upgrades aligned with your system.

How fast can you respond in Los Angeles?
We prioritize critical facilities and do our best to provide rapid on‑site assessments across LA, with flexible scheduling for Orange, Ventura, and Western Riverside counties.

Ready to restore your AHU?

If your building needs Commercial AHU repair in Los Angeles, partner with #1 AC Guys — the fourth‑generation engineering team focused on healthy air and reliable performance. Contact us to schedule an assessment and get a clear, data‑driven repair plan for your Air Handling Unit.