Commercial VRF/VRV System Installation in Fullerton, CA

As your local VRF/VRV partner in Fullerton, #1 AC Guys delivers precision-engineered systems that reduce energy use, improve zoning control, and elevate indoor air quality across offices, retail, multifamily, hospitality, education, and medical spaces. We are a 4th-generation family business with 80+ years of engineering experience, proudly serving Orange County and all of Southern California.

Why VRF/VRV for Fullerton Facilities

Variable Refrigerant Flow and Variable Refrigerant Volume systems provide advanced, inverter-driven heating and cooling with exceptional part-load efficiency. Benefit from flexible zoning, simultaneous heating and cooling, quiet operation, compact equipment footprints, and rapid scalability for tenant improvements or phased expansions. For many buildings in Fullerton, VRF/VRV reduces operating costs and enhances comfort without invasive ductwork.

Our Design-Build Process

1. Discovery and Goals: We start with site walks, existing system evaluations, and stakeholder interviews to define comfort, IAQ, budget, and timeline targets.

2. Engineering and Modeling: Detailed load calculations, zoning strategy, and piping layouts sized for efficiency and serviceability. We anticipate future capacity and tenant changes.

3. Equipment and Controls: Selection of outdoor heat pumps, branch controllers, and indoor units (cassettes, ducted, high-walls) with open-protocol controls and BMS integration where needed.

4. Permitting and Compliance: Title 24 documentation, City of Fullerton permits, and coordination to maintain schedules. We align with ASHRAE, IMC, and local requirements including refrigerant concentration limits.

5. Installation and Phasing: Clean, safe job sites with phased work to minimize downtime for occupied buildings. Our crews protect finishes, manage noise, and maintain access.

6. Commissioning and Training: Factory-informed startup, controls tuning, owner training, and turnover packages with as-builts and O&M manuals for smooth operations.

Factory-Trained on Leading VRF Platforms

Our engineering team has completed factory trainings with global manufacturers including Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). That experience translates into reliable selections, smart piping and control strategies, and faster commissioning for your system. We apply best practices from leading OEMs while tailoring every design to your building’s unique needs.

Healthy Air Is Our Mission

Comfort means more than temperature. We prioritize indoor air quality through proper ventilation, MERV-rated filtration, demand-control strategies, and humidity management. We can integrate outdoor air systems, energy recovery, and CO2 monitoring to maintain fresh, healthy air while protecting efficiency—ideal for schools, healthcare, offices, and multi-tenant spaces.

Industries and Building Types We Serve

• Office and corporate campuses
• Retail and mixed-use
• Multifamily and condos
• Hotels and hospitality
• Education and places of worship
• Medical offices and clinics
• Restaurants and specialty venues

New Construction, Retrofits, and Complex Projects

We excel at challenging environments: limited ceilings, historic structures, phased tenant improvements, and occupied retrofits. VRF/VRV’s compact piping and modular equipment help us deliver high performance with minimal disruption, even in tight urban footprints.

Compliance, Safety, and Documentation

We manage Title 24 forms, acceptance testing coordination, refrigerant concentration compliance per ASHRAE guidelines, and as-built documentation. Our team plans safe routing, service clearances, and future access to reduce lifecycle costs and maintenance time.

Controls and BMS Integration

Whether you need standalone touch panels or integration with BACnet and Modbus-enabled building management systems, we design controls for clarity and flexibility. We standardize naming, trends, and alarms to simplify operations for your facilities team.

What to Expect from #1 AC Guys

• Transparent, line-item proposals and clear schedules
• Dedicated project management and proactive communication
• Factory-informed commissioning and owner training
• Manufacturer warranties with available extended coverage
• Preventive maintenance plans to protect your investment

Local to Fullerton, Serving All of Southern California

We proudly serve Fullerton and the surrounding area, including all of Orange County, Los Angeles County, Ventura County, and Western Riverside County. From a single suite to a multi-building campus, we scale to meet your needs.

Get Started Today

Upgrade to a smarter, cleaner, and more efficient system. Contact #1 AC Guys for a no-pressure on-site assessment and a tailored commercial VRF/VRV installation plan for your Fullerton property. Let our 4th-generation team deliver healthy air and long-term value for your business.