Commercial Furnace Repair in Orange, CA

Commercial heating downtime can disrupt operations, impact customer experience, and strain your bottom line. #1 AC Guys brings engineering-grade precision to Commercial Furnace Repair in Orange, CA, helping business owners, facility managers, and property managers restore safe, efficient heat with minimal disruption.

Why choose #1 AC Guys for commercial furnace repair in Orange

• 80+ years of engineering expertise across four generations of our family-owned team
• Factory-trained at Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China)
• Specialized in large, complex commercial and mixed-use projects
• Root-cause diagnostics that prevent repeat breakdowns
• Transparent proposals with repair options that match your budget and operating goals
• Indoor air quality and safety prioritized in every repair
• Local service for Orange and Orange County, with wider coverage across Los Angeles County, Ventura County, and Western Riverside County

Commercial systems we repair

• Rooftop packaged gas heat units (RTUs)
• High-efficiency and condensing gas furnaces
• Make-up air and ventilation units with heating sections
• Unit heaters, cabinet heaters, and duct furnaces
• Split-system heating with commercial air handlers
• Controls, sensors, and BMS integration for heating sequences

Whether your building uses a single rooftop unit or a multi-zone fleet across several rooftops, we tailor repairs to your system design, occupancy patterns, and energy objectives.

Common furnace issues we fix

• No heat or intermittent heat due to ignition and flame sensing problems
• Short cycling, nuisance lockouts, and error codes
• Blower and motor failures, bearings, belts, and vibration issues
• Insufficient airflow from dirty coils, clogged filters, or duct restrictions
• Heat exchanger concerns and combustion safety issues
• Thermostat, economizer, and control board failures
• Uneven temperatures across zones and airflow imbalances

Our approach targets the true source of failure, not just the symptom—reducing future downtime and protecting your equipment investment.

Our commercial repair process

• Assess and stabilize: We verify safety, protect occupants, and stabilize conditions.
• Diagnose precisely: Instrumented testing for gas pressure, combustion, airflow, and electrical performance.
• Explain clearly: You receive straightforward findings with repair paths, timelines, and costs.
• Repair with quality parts: We perform code-compliant repairs designed for longevity and performance.
• Prove performance: Post-repair combustion checks, temperature rise, and control calibration.
• Document and plan: You receive a service report plus maintenance recommendations to prevent recurrences.

Healthy air for healthy business

Our mission is healthy air for a healthy life. For commercial spaces, that means dependable heat, correct ventilation, and clean air that supports productivity and comfort. Every Commercial Furnace Repair is performed with indoor air quality in mind, from proper filtration and airflow to safe combustion and exhaust.

Preventive maintenance for Orange facilities

After repair, a proactive maintenance plan helps control costs and extend equipment life.

• Seasonal start-ups and heating safety checks
• Filter programs matched to dust load and hours of operation
• Combustion and gas train testing
• Belt, bearing, and motor inspections with amp-draw verification
• Coil and heat exchanger cleaning as needed
• Controls calibration, economizer verification, and setpoint optimization

Planned upkeep reduces surprises, stabilizes comfort, and supports energy efficiency all season long.

Proudly serving Orange and Southern California

We are based in Greater Los Angeles and proudly serve Orange, Orange County, and nearby communities, with extended coverage in Los Angeles County, Ventura County, and Western Riverside County. If your portfolio spans multiple cities, we can coordinate multi-site Commercial Furnace Repair and ongoing service for consistent outcomes.

Ready to restore reliable heat?

Get expert Commercial Furnace Repair in Orange from a fourth-generation family of engineers who treat your facility like our own. Contact #1 AC Guys to schedule service or request a proposal. Same- or next-day availability is often possible, and every visit is guided by the highest standards of engineering, safety, and professionalism.