Pasadena Commercial & School HVAC Systems

As Pasadena’s trusted partner for commercial and school HVAC systems, #1 AC Guys combines precision engineering with field‑proven delivery to meet the unique demands of educational and institutional environments. Our mission—healthy air for healthy living—guides every design decision, from ventilation rates and acoustics to energy performance and controls integration.

What we deliver for schools and commercial campuses

• Design‑build and plan‑spec execution for new construction, modernizations, and phased retrofits
• VRF/VRV heat pump systems for zoned comfort and low operating costs
• DOAS with energy recovery for code‑compliant ventilation and lower latent loads
• Rooftop units, split systems, and packaged solutions sized for classrooms, gyms, and admin spaces
• MERV‑13+ filtration, HEPA options, and advanced air purification strategies
• CO2 monitoring and demand control ventilation aligned with ASHRAE 62.1
• Controls integration (BACnet/IP), smart thermostats, and analytics for visibility and savings
• Commissioning, test & balance, and ongoing preventive maintenance
• Seismic bracing, acoustical mitigation, and OSHPD/DSA‑informed best practices where applicable

Our engineers are factory‑trained by Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China). We also service and integrate AC PRO‑specified equipment, helping districts and facility managers align with preferred specs and procurement standards while meeting performance goals.

Engineered for California performance and compliance

Every Pasadena school HVAC project we deliver is engineered for Title 24 efficiency, ASHRAE 62.1 ventilation, and ASHRAE 90.1 energy performance. We prioritize quiet operation, thermal comfort, and verifiable IAQ—critical for student focus and staff wellbeing. From CO2‑based ventilation resets to advanced economizer logic and demand‑response readiness, we help you future‑proof your facilities.

When electrification or decarbonization mandates are on your roadmap, we design VRF heat pump retrofits and DOAS upgrades that cut emissions and utility spend without sacrificing reliability. Our commissioning process validates capacities, airflow, controls sequences, and acoustics so classrooms stay comfortable across Pasadena’s seasonal swings.

Services tailored to Pasadena schools

• Site assessment and load calculations, including classroom‑level zoning analysis
• Lifecycle cost modeling to compare repair, retrofit, and replace options
• Filtration and IAQ upgrades (MERV‑13+, HEPA, UV‑C, bipolar ionization where appropriate)
• Controls retrofits: CO2 sensors, DCV, occupancy strategies, and schedule optimization
• Emergency response and after‑hours change‑outs to minimize learning disruption
• Planned maintenance programs to extend asset life and stabilize budgets

We understand the realities of occupied campuses: strict safety protocols, background‑checked crews, clean job sites, and coordination with administrators and facility managers. Our team phases noisy work, protects learning environments, and documents every milestone so stakeholders stay informed.

Complex projects are our specialty

Large central plants, multi‑building campuses, historic Pasadena properties, and tight mechanical rooms demand engineering discipline. With 80+ years of engineering expertise across four generations, #1 AC Guys solves the hard problems—unifying legacy equipment with modern controls, upgrading ventilation without overloading electrical infrastructure, and sequencing phasing to keep schools open and comfortable.

We collaborate early with architects, GCs, and district engineers to reduce change orders and compress timelines. Our submittals are clear, our commissioning is rigorous, and our maintenance handoffs are thorough—so you get predictable performance from day one.

Why #1 AC Guys for Pasadena

• Local expertise across Pasadena, Los Angeles County, Orange County, Ventura County, and Western Riverside County
• Factory training: Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), Hier (China)
• Capability to service and integrate AC PRO‑specified equipment and components
• Design‑build, retrofit, and maintenance for schools, universities, offices, and specialized facilities
• Transparent scopes, commissioning records, and performance reporting

Whether you need a rapid rooftop replacement, a district‑wide VRF conversion, or a targeted IAQ upgrade before the school year, our engineers deliver dependable results. We plan around academic calendars, coordinate permits and inspections, and provide clear documentation for compliance and funding requirements.

Get started today

If you manage a Pasadena school or commercial property and need a partner for HVAC design, installation, or service, #1 AC Guys is ready to help. Request a site assessment to benchmark IAQ, comfort, and energy use, and we’ll propose a practical roadmap—from immediate fixes to long‑term capital planning. Your students, staff, and stakeholders deserve healthy, efficient air—and that’s exactly what we engineer.

Serving Pasadena and the greater Los Angeles region with pride. #1 AC Guys—family‑owned, 4th‑generation engineers, delivering commercial and school HVAC systems built to last.