Commercial Ventilation System Installation in Fullerton, CA

Design-build expertise you can trust

We specialize in turnkey commercial ventilation system installation for Fullerton businesses that demand reliability, compliance, and measurable IAQ improvements. Our fourth-generation team translates 80+ years of engineering know-how into smart layouts, right-sized equipment, and efficient commissioning that meets California Title 24, CALGreen, and ASHRAE 62.1 requirements the first time.

From early planning through final air balancing, you get a single accountable partner who owns the details: load and airflow calculations, duct design to SMACNA standards, submittals, permitting, and closeout documentation.

Systems we design and install

• Dedicated Outdoor Air Systems (DOAS) with energy recovery (ERV/HRV) for superior ventilation efficiency.
• Demand-controlled ventilation using CO2 sensors for occupancy-based airflow and lower utility costs.
• VAV/VVT systems and variable-speed fans for precise zone control and comfort.
• Rooftop units with economizers, make-up air systems, and balanced exhaust.
• High-efficiency filtration (MERV-13 and HEPA where required), plus optional UV-C and bipolar ionization strategies based on project goals.
• Commercial kitchen make-up air and exhaust designed to applicable codes (including NFPA 96 where relevant).

Our process: from concept to commissioning

1) Site assessment and goals alignment: We document existing conditions, business priorities, and compliance needs for your Fullerton facility.
2) Engineering and selection: Equipment is selected for lifecycle value, acoustics, IAQ, and energy performance.
3) Coordination and permitting: We prepare plans, Title 24 documentation, and coordinate with local authorities for timely approvals.
4) Professional installation: Clean, safe, code-compliant install with attention to airflow, sealing, and access for serviceability.
5) Testing, Adjusting, and Balancing (TAB): Verified airflow delivery to design specs.
6) Commissioning and training: We calibrate controls, integrate with your BMS if applicable, and train your team.
7) Ongoing care: Preventive maintenance and IAQ monitoring to protect your investment.

IAQ and energy performance, engineered together

Healthy indoor air drives productivity and protects occupants. We prioritize outside air delivery, proper filtration, and contaminant control while optimizing energy through heat recovery, economizers, and intelligent controls. Expect fewer complaints, steadier temperatures, and improved compliance with ASHRAE ventilation rates and California energy codes.

Industries we serve in Fullerton

Offices and corporate campuses, retail and restaurants, healthcare clinics and labs, education and childcare, gyms and studios, warehouses and light industrial, hospitality, and multifamily common areas. If your project is large, technical, or schedule-critical, it is squarely in our wheelhouse.

Why #1 AC Guys

• Fourth-generation, family-owned HVAC contractor with 80+ years of engineering lineage.
• Factory-trained team with hands-on training at OEM facilities: Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), Haier (China).
• Proven on complex commercial projects with strict timelines and compliance requirements.
• Transparent pricing, detailed scopes, and proactive communication.
• Strong safety culture and clean job sites.

Compliance and documentation

We design to Title 24, CALGreen, and ASHRAE 62.1/90.1 standards, and align with SMACNA duct construction guidelines. For kitchens and special-use spaces, we address exhaust codes and applicable standards such as NFPA 96. Our submittal packages, as-builts, and commissioning reports streamline approvals and future maintenance.

Service area

We proudly serve Fullerton and North Orange County (including Anaheim, Brea, Buena Park, Placentia), as well as Los Angeles County and nearby regions: Ventura County and Western Riverside County. Our headquarters in the Greater Los Angeles area enables rapid mobilization and responsive project support.

Maintenance and upgrades

Keep your system performing with scheduled filter service, coil cleaning, belt and bearing checks, controls verification, and documentation for IAQ and compliance audits. We also retrofit older systems with energy recovery, DCV, and higher-efficiency fans to reduce operating costs while improving ventilation effectiveness.

Our mission

Healthy air, healthy business. As a family company, our mission is to deliver healthier indoor air and dependable comfort that supports productive work and customer confidence—today and for the long term.

Get a fast, accurate quote

Ready to upgrade or add ventilation at your Fullerton facility? Contact #1 AC Guys for a free on-site assessment, engineered recommendations, and a clear, code-compliant proposal. We will align scope, budget, and timeline—and deliver a system built to perform.