Commercial Exhaust Fans in Ontario, CA

When commercial exhaust is designed right, your people breathe better, equipment runs cooler, and your building stays within code. #1 AC Guys delivers full‑scope exhaust solutions in Ontario, CA—from engineering and permitting to installation, commissioning, and lifecycle maintenance.

What We Do

We engineer, install, replace, and service commercial exhaust fans and related systems: rooftop upblast and downblast fans, in‑line duct fans, high‑temperature and grease exhaust, lab and process exhaust, make‑up air units, variable speed fan controls, curb adapters, and vibration isolation. Each project is designed around your required CFM, static pressure, duct layout, noise targets, filtration goals, and energy budget.

Why #1 AC Guys

• 80+ years of engineering experience; 4th‑generation family‑owned
• Factory‑trained at Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China)
• Proven on large, complex commercial and industrial projects
• Design‑build capability: calculations, drawings, and coordination
• Commissioning, testing, and air balancing for verified results
• Code‑aligned solutions: California Title 24, ASHRAE 62.1, and NFPA 96 (kitchens)

AC PRO–Sourced Equipment Advantage

To keep your project on schedule, we source commercial exhaust fans, motors, curb adapters, and accessories through AC PRO—helping secure the right components quickly and reliably. This supply depth supports faster turnarounds for replacements, retrofits, and ground‑up builds without compromising performance or durability.

Design & Engineering

Our engineers size fans for required airflow and pressure using duct geometry, hood capture velocities, and equipment heat loads. We integrate make‑up air to balance exhaust, stabilize building pressure, and protect indoor air quality. For efficiency and control, we implement VFDs, demand‑controlled ventilation, and interlocks with hoods and HVAC equipment. We also address acoustics, grease management, roof curb compatibility, and maintainability for safer service access.

Industries & Applications

• Commercial kitchens and food processing
• Warehouses and distribution centers
• Manufacturing and light industrial
• Laboratories and R&D facilities
• Automotive shops and body repair
• Parking garages and smoke control zones
• Retail, mixed‑use, and multi‑tenant buildings

Comprehensive Services

• New installation and design‑build exhaust systems
• Exhaust fan replacement and curb adapter retrofits
• Kitchen hood exhaust and grease duct upgrades
• Make‑up air unit design and integration
• Repair, motor replacement, bearings, belts, and controls
• Preventive maintenance and lubrication schedules
• Testing, adjusting, and balancing (TAB)

When to Repair or Replace

• Insufficient airflow, heat or odor build‑up, or smoke migration
• Premature motor failures, vibration, or bearing noise
• Frequent belt breaks or electrical/control issues
• Corrosion, grease accumulation, or roof penetration leaks
• Code updates requiring higher capture or interlocks
• Expansion requiring higher CFM or added make‑up air

Our Process

• Assessment: site walk, performance testing, and code review
• Engineering: load calcs, fan curves, duct routing, and controls
• Proposal: scope, equipment, timeline, and transparent pricing
• Installation: safety‑first execution with coordinated trades
• Commissioning: verification of CFM, pressure, noise, and controls
• Maintenance: scheduled service to protect uptime and efficiency

Service Area

Based in Los Angeles, we serve Ontario, CA and the Greater Los Angeles area—including Los Angeles County and nearby regions such as Orange County, Ventura County, and Western Riverside County. If your facility sits near these areas, contact us to confirm quick response times.

Healthy Air, Productive Spaces

Our mission is healthy air for a healthy life. With advanced engineering, AC PRO–sourced equipment availability, and meticulous commissioning, we deliver commercial exhaust systems that protect people, processes, and property—so your operation runs cleaner, cooler, and more reliably every day.

Ready to move air the right way? Request a consultation for your Ontario commercial exhaust fan project today.