Commercial Whole‑House Fan Installation in Rialto, CA

Commercial whole‑house fan systems—often called whole‑building ventilation fans—use powerful, efficient fans to draw in cooler outdoor air and exhaust warm, stale indoor air. In Rialto’s climate, these systems shine during evenings, nights, and shoulder seasons, providing fast air changes, reducing cooling loads, and supporting healthier indoor air quality. They can stand alone or complement rooftop units, VRF/mini‑split systems, and economizers for a balanced, energy‑savvy strategy.

What a commercial whole‑house fan does

Unlike spot exhaust, a whole‑building fan is engineered to move large volumes of air through planned intake and exhaust pathways. With proper dampers, louvered openings, and control logic, the system purges heat from the structure and replaces it with fresh air. Our designs account for pressurization, sound, filtration options, and safety interlocks so the system works quietly and predictably—without back‑drafting or comfort issues.

• High‑CFM airflow for rapid air changes and heat purge
• Night flush cooling to reduce next‑day cooling demand
• Fresh‑air dilution to improve perceived air quality
• Smart controls with temperature, schedule, and IAQ inputs
• Integration with existing HVAC and building automation

Is it right for your Rialto facility?

These systems are a strong fit for many light‑commercial and institutional buildings in the Inland Empire. We evaluate your use case and local conditions before recommending a solution.

• Ideal for: offices, retail, churches, schools, community centers, fitness studios, and light industrial or warehouse spaces
• Great when: evenings are cooler than indoors and you can secure filtered intake and planned exhaust pathways
• Considerations: odor or pollutant sources, nearby traffic, and specific indoor process loads may call for added filtration or specialized ventilation
• Not for: kitchens, labs, or spaces with hazardous exhaust without additional engineered safeguards

Our engineered process

• Assessment and modeling: Site walk, load analysis, airflow calculations, and acoustical review.
  We measure pathways, verify electrical capacity, and review roof/wall structures for safe mounting.
• Code and permitting: Title 24, CALGreen, and local requirements; fire/smoke interlocks; egress and roof clearances.
  We prepare submittals and handle permits for a smooth approval path.
• Design and equipment: Fan sizing, dampers, louvers, filtration options, and control sequences tailored to your schedule and IAQ goals.
  We plan intake and exhaust to avoid hot spots and noise issues.
• Professional installation: Clean, safe, and coordinated work with structural anchoring, weatherproof penetrations, and sealed ducting.
  Seismic bracing and curb details meet California best practices.
• Controls integration: Thermostat and BAS tie‑ins, demand‑based operation, lockouts with fire/smoke events, and occupancy scheduling.
  We document sequences so staff can easily operate the system.
• Testing and commissioning: Airflow verification, balancing, vibration checks, and functional testing.
  You receive commissioning reports with performance benchmarks and care recommendations.
• Training and maintenance: Staff orientation, maintenance plan, and optional monitoring visits to keep performance on track.

Compliance and quality assurance

We design and install to California standards and recognized industry practices, including Title 24 energy code guidance, CALGreen objectives, and ventilation principles aligned with ASHRAE 62.1 and 90.1. We coordinate with fire life‑safety requirements so fans, dampers, and smoke controls interact correctly. Our installations emphasize safe electrical work, sealed penetrations, and durable, serviceable layouts—supported by clear as‑built documentation.

Why #1 AC Guys

• Fourth‑generation family business with 80+ years in engineering, based in Greater Los Angeles
• Factory‑trained with Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China)
• Specialists in complex, large‑scale commercial and mixed‑use projects
• Engineering‑first proposals, transparent pricing, and predictable timelines
• Healthy indoor air mission with measurable outcomes through commissioning
• Serving Rialto and projects across Los Angeles County and nearby areas, including Orange, Ventura, and Western Riverside counties

Ongoing care to protect your investment

Performance depends on clean pathways, tuned controls, and verified airflow. Our maintenance services include seasonal testing, damper and louver inspections, belt and pulley alignment, vibration checks, and filter service where specified. We can coordinate with your existing HVAC service plan to ensure fans and comfort systems work in concert, minimizing energy use while preserving comfort.

Get a fast, no‑pressure quote

Whether you’re retrofitting an existing building in Rialto or planning a new tenant improvement, we’ll help you determine if a commercial whole‑house fan is the right fit. Expect clear options, code‑ready designs, and careful installation from a team that treats your facility like our own. Contact #1 AC Guys to schedule an assessment and discover how engineered ventilation can elevate indoor air quality while easing daytime cooling loads.