Commercial Ventilation Design in Fullerton—Engineered for Health, Efficiency, and Code Compliance
As a fourth‑generation family team with 80+ years in engineering, #1 AC Guys designs and delivers commercial ventilation systems that protect people and productivity across Fullerton and Orange County. We engineer outside air, filtration, and exhaust streams to meet ASHRAE and California codes while controlling energy costs.
Factory‑trained by Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China), our specialists integrate proven equipment with fast AC PRO sourcing for design‑build schedules that actually hold.
From restaurants and campuses to warehouses and medical offices, we balance airflow, pressure, and IAQ to create healthier, more reliable buildings—ready for inspections, growth, and everyday performance.