Commercial Furnace Repair in Long Beach

Why Long Beach businesses choose #1 AC Guys

We are a family‑owned HVAC company built by a 4th‑generation line of engineers. With 80+ years in engineering, we bring an analytical, standards‑driven approach to Commercial Furnace Repair that reduces downtime and extends equipment life. Our mission is healthy air for healthy life—delivered through safe combustion, balanced airflow, and clean, code‑compliant workmanship.

• Rapid diagnostics and first‑visit repair focus
• Experienced with AC PRO commercial furnaces and RTUs
• Engineered solutions for multi‑zone and large‑capacity systems
• Combustion safety, CO testing, and documentation
• Title 24, fire code, and local AHJ compliance support

Our commercial furnace repair process

We begin with a structured assessment: visual inspection, fault code retrieval, burner and ignition evaluation, heat‑exchanger integrity check, gas pressure and combustion analysis, blower and belt inspection, filter and coil status, and control sequence testing. We verify economizer operation on rooftop units, assess fresh‑air and ventilation settings, and confirm airflow to spec.

• Step 1: Safety and CO monitoring, lockout/tagout if required
• Step 2: Root‑cause diagnostics and performance benchmarking
• Step 3: Present options and fixed pricing before work begins
• Step 4: OEM‑grade parts repair and precision adjustments
• Step 5: Functional testing, documentation, and service report

AC PRO commercial systems we service

We service and repair AC PRO branded commercial furnaces and rooftop packaged heating units, along with many mixed‑brand system integrations commonly found in Long Beach buildings. We follow manufacturer specifications, use OEM‑grade components, and verify settings to help protect equipment and efficiency. If your site has legacy or hybrid systems, our engineers can integrate solutions that restore safe heat without disrupting operations.

What we repair and optimize

• Gas furnaces (standard and high‑efficiency), RTUs, and make‑up air units
• Ignition modules, flame sensors, burners, and gas valves
• Heat exchangers (inspection, leak checks, replacement recommendations)
• Blowers, motors, belts, bearings, and variable‑speed drives
• Economizers, outdoor air dampers, and ventilation controls
• Thermostats, BAS/EMS integration, and zone controls
• Airflow balancing, filter upgrades, and IAQ improvements

Safety, documentation, and compliance

Every repair includes combustion safety checks and CO testing. We align work with Title 24 requirements where applicable and support documentation for your insurer, property manager, or local AHJ. Our reports summarize findings, readings, parts replaced, and recommendations to help you plan budgets and minimize future downtime.

Engineered expertise you can verify

Our technicians are engineers at heart and in practice. Team members have completed factory training with Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). That foundation, combined with real‑world commercial experience, equips us to solve complex heating challenges quickly and accurately.

Proactive maintenance for fewer breakdowns

After repairs, we can enroll your site in a commercial maintenance plan tailored to occupancy and usage. Routine inspections catch drifting gas pressures, fouled burners, slipping belts, restricted filters, and economizer faults before they become outages. Better reliability, lower energy spend, and healthier air—backed by data and reports.

• Seasonal heating tune‑ups and safety checks
• Filter strategy upgrades (MERV/pressure considerations)
• Combustion and airflow optimization
• Controls calibration and sequence verification

Transparent pricing and warranties

We provide clear, upfront pricing options before any work begins. You’ll know exactly what we recommend, why it matters, and how it protects your people and equipment. Completed repairs include workmanship guarantees, and we stand behind our diagnostics with detailed, plain‑English explanations.

Industries we serve in Long Beach

Office and medical buildings, retail and restaurants, schools and places of worship, light industrial and warehouses, mixed‑use and multi‑tenant properties. Whether you operate a single site or a portfolio, we can standardize service and reporting across locations.

Fast service, minimal disruption

We prioritize occupied spaces and critical operations. Scheduling is flexible, with same‑day and after‑hours availability to reduce impact on tenants, staff, and customers. Our vans are stocked for common AC PRO and commercial furnace repairs to accelerate first‑visit resolution.

Service area

Based in Los Angeles, we proudly serve Long Beach and all of Los Angeles County, with extended coverage in Orange County, Ventura County, and Western Riverside County.

Call the engineers when the heat is on

If you need Commercial Furnace Repair in Long Beach—especially for AC PRO furnaces and rooftop units—bring in #1 AC Guys. We deliver engineered diagnostics, clean and compliant repairs, and documentation you can trust. Request service today and keep your building warm, safe, and productive.