Commercial Exhaust Fans in Los Angeles

End‑to‑end commercial exhaust solutions

#1 AC Guys provides turnkey commercial exhaust fan services in Los Angeles, from engineered design and permitting to installation, balancing, and ongoing maintenance. Our fourth‑generation, family‑owned team brings 80+ years of practical engineering to every project, and we are factory‑trained by leading manufacturers including Fujitsu, Mitsubishi Electric, Midea, Gree, and Haier. We excel at large and complex scopes, seismic rooftop work, curb adapters, retrofits, and controls integration that meets California Title 24 and local code requirements.

What we service and install

• Upblast and downblast rooftop exhaust fans for commercial kitchens, grease, and heat
• Inline and centrifugal fans for long duct runs and quiet performance
• Garage and parking exhaust with CO and NO2 demand control ventilation
• Restroom, warehouse, and general exhaust for heat, fumes, and particulates
• Laboratory and light industrial exhaust, filtration, and makeup air coordination
• EC and VFD drives, smart controls, and building automation integration

We select and size fans for the real conditions on site: static pressure, duct geometry, hood capture efficiency, and code‑required air changes, not just nameplate CFM. That means safer, quieter, and more energy‑efficient outcomes.

Industries and spaces we support

Restaurants and food halls, ghost kitchens, groceries, production bakeries, warehouses and distribution centers, fitness studios, auto shops, multifamily garages, schools, healthcare clinics, biotech and R&D labs, and office core restrooms throughout Los Angeles County and surrounding areas.

Compliance and permitting made simple

We design to LA City and County codes, NFPA 96 for commercial kitchens, California Title 24 ventilation standards, and AQMD best practices. Our team handles plan submittals, seismic anchorage details, fire and grease duct clearances, curb and roof penetrations, and final inspections. If you have a red tag, failed inspection, or recurring grease or odor complaints, we will diagnose, correct, and document the fix.

Retrofits, replacements, and new builds

Whether replacing a failing belt‑drive unit with a high‑efficiency direct‑drive EC motor, adding makeup air to stop negative pressure, or designing a new multi‑fan system with variable speed, we deliver upgrades that lower energy use and maintenance while improving capture and comfort. We fabricate custom curb adapters and transitions to minimize roof work and downtime.

Maintenance and repairs that prevent downtime

• Proactive service plans with belt, bearing, and motor inspections
• Cleaning of wheels, housings, and grease pathways to restore airflow
• Vibration testing and balancing to extend equipment life
• Electrical diagnostics, controls tuning, and sensor calibration
• Airflow testing and balancing to verify code ventilation rates

When issues strike, we provide fast troubleshooting for noisy fans, low airflow, tripped breakers, overheated motors, or smoke and odor migration. Emergency options are available.

Healthy air is our mission

Our mission is simple: healthier indoor air for a healthier life. Effective exhaust reduces grease fire risk, removes fumes and particulates, and protects employees and guests. We pair exhaust with the right makeup air to stabilize pressure, improve comfort, and safeguard your HVAC system.

Why choose #1 AC Guys

• Fourth‑generation, family‑owned Los Angeles HVAC contractor with 80+ years of engineering expertise
• Factory‑trained technicians and rigorous commissioning standards
• Specialists in large, complex, and multi‑tenant commercial projects
• Clear pricing, clean workmanship, and detailed close‑out documentation
• Servicing all major brands and control platforms

Service area

We proudly serve Los Angeles County and nearby regions, including Orange County, Ventura County, and Western Riverside County. From Downtown LA to the Valley, the South Bay, Westside, and beyond, our team is ready to mobilize.

Get your free on‑site assessment

Need a new commercial exhaust fan, a code‑driven retrofit, or expert repair in Los Angeles? Contact #1 AC Guys to schedule a free on‑site assessment. We will evaluate airflow, pressure, and code requirements, then deliver a clear plan and fixed pricing to get your ventilation working right.