Hyatt Regency Irvine

Irvine, CA

Hyatt Regency, Irvine, guestroom


The 541-room, 587,000-square-foot Hotel Irvine was recently purchased by Hyatt and rebranded as the Hyatt Regency Irvine. As part of an extensive hotel-wide renovation, the facility received engineering upgrades. GBA designed improvements to the building’s systems, including refurbishment of fan coil units that were part of the original 1985 hotel construction.

Fan Coil Unit Refurbishment, Engineering Design

To improve guest experiences and facility reliability, Hyatt retained GBA to design upgrades to the HVAC system in the recently acquired hotel.

Guestrooms and guest elevator lobbies are conditioned by nearly 600 four-pipe vertical stack fan coil units, controlled by digital thermostats. The fan coils range in size from 300 to 800 cfm.

Project scope included:

  • Cleaning and disinfecting the heating and cooling coils.
  • Reconditioning the fan assemblies, including cleaning and disinfecting of the fan wheel and housing.
  • Reconditioning the drain pans, including cleaning and disinfecting; epoxy coating and sealing; and cleaning and disinfecting the p-traps and drain lines from drain pans to drain risers.
  • Testing and commissioning each unit, including measuring the coil temperature (before and after coil cleaning); programming ECM motors at all operating speeds; and providing airflow testing to document performance.
  • If deemed necessary on inspection, fan motors and control valve actuators were also replaced.

View More Projects

Interested in learning more about how GBA can assist with your facility objectives? Our portfolio is a great place to start. 

Skyscraper board room

430 N. Michigan (Realtor Building)

A large-scale vertical expansion called on GBA's analytical, design, and commissioning skills.

Hallway with rehab equipment

Shirley Ryan AbilityLab, Pediatric & DayRehab Center

This outpatient center serves children and adults; GBA provided engineering design services for the adaptive reuse project.

Exterior of Todd Building, University of Kentucky

University of Kentucky, Lee T. Todd, Jr. Building

An ASHRAE Level 1 audit,  retro-commissioning, and a lab ventilation assessment improved sustainability.