Commercial, Hospital & Lab Ventilation in Ontario, CA

Healthy air is our mission—and your operations depend on it. #1 AC Guys designs, installs, and maintains commercial, hospital, and laboratory ventilation systems in Ontario, CA with a relentless focus on safety, compliance, and measurable performance. We specialize in complex projects where airflow, pressure, and contamination control cannot fail.

What we build for hospitals and labs

• Negative- and positive-pressure rooms (isolation, AII, PE) with continuous differential monitoring
• USP 797/800 pharmacy ventilation with dedicated exhaust, containment, and HEPA filtration
• Cleanrooms and controlled environments (ISO classifications) with precise air changes and zoning
• Laboratory exhaust systems for fume hoods, biosafety cabinets, and specialty processes
• Energy-efficient make-up air units, ERVs/HRVs, and decoupled ventilation strategies
• High-efficiency filtration (MERV 13+ and HEPA), UV-C options, and air quality sensors
• BAS/BMS integration, VAV control, and smart pressure-reset sequences for efficiency

We source and stage critical components through AC PRO’s Southern California supply network to reduce lead times, stabilize costs, and keep projects on schedule without compromising specifications.

Designed for compliance and performance

Our designs are engineered to meet project-specific codes and industry guidelines, including ASHRAE recommendations for healthcare ventilation, FGI guidance for healthcare facilities, NFPA 99 considerations, and USP 797/800 for sterile compounding areas, as applicable to your scope. We translate these requirements into clear drawings, submittals, and test plans so owners and GCs can verify compliance at every step.

Key performance priorities include:

• Verified air change rates appropriate to each space type
• Stable pressurization with alarmed monitoring points
• Proper filtration staging (pre, final, HEPA) with service access
• Redundancy strategies (N+1 where required) and maintainability
• Energy optimization via demand control, heat recovery, and ECM fans

Our process

1) Assessment and goals: We start with a site review, existing conditions, and your operational risks, then align on codes, capacity, and schedule.
2) Engineering and submittals: Load calcs, airflow schematics, control sequences, and coordination with architectural and electrical trades—delivered with transparent documentation.
3) AC PRO procurement: We leverage AC PRO’s inventory and logistics to secure compliant air distribution, ventilation equipment, and accessories quickly.
4) Installation and safety: Superintendent-led crews execute with infection-control risk assessment (ICRA) and strict jobsite safety protocols.
5) Test, Adjust, Balance (TAB) and commissioning: We validate airflow, pressure, alarms, and controls. You receive a commissioning report with measured results.
6) Training and lifecycle support: We provide operator training, PM plans, and responsive service to protect uptime.

Technology we bring

• HEPA and MERV 13+ filtration for particulate control
• UV-C options for coil and airstream treatment
• High-turndown VAV, sash management for fume hoods, and demand-based ventilation
• Continuous pressure monitoring with remote alarms and trending
• Energy recovery ventilators and heat recovery options for lower operating costs

Why #1 AC Guys

We are a fourth-generation family of engineers with 80+ years in engineering, trusted for complex healthcare and laboratory ventilation across Southern California. Our team is factory-trained at Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China), bringing proven best practices to field conditions. We stand behind our work with clear communication, precise commissioning, and rapid support.

We proudly serve Ontario, Los Angeles County, Orange County, Ventura County, and Western Riverside County—delivering AC PRO-supplied solutions with the speed and reliability your facility demands.

Projects we excel at

• Isolation room conversions and upgrades
• Pharmacy cleanroom expansions (USP 797/800)
• Research and teaching lab ventilation modernization
• Make-up air and exhaust balancing for existing hospitals
• Design-build ventilation for new commercial campuses

Get a code-ready plan and a firm timeline

Request a consultation to review your goals, schedule, and budget. We’ll outline a code-ready concept, provide an AC PRO-informed procurement plan, and deliver a commissioning roadmap so you can move forward with confidence. Healthy indoor air is essential to patient care, scientific outcomes, and staff safety—let’s engineer it right, from day one.

Contact #1 AC Guys today for commercial, hospital, and lab ventilation in Ontario, CA and the greater Los Angeles area.