Universal Health Services, Spring Valley Hospital Medical Center

Las Vegas, NV

UHS, Spring Valley Hospital Medical Center


Part of Universal Health Services, Spring Valley is an acute care facility in Las Vegas, NV, including approximately 295,761 square feet of space and 292 private hospital rooms. The hospital was built in 2003 and expanded with a large bed tower in 2016.

As part of a multi-year, multi-site initiative by UHS, GBA was hired to implement a retro-commissioning program, including construction administration for selected measures requiring contracting work. In addition, the scope included launching a monitoring-based commissioning (MBCx) platform and an energy information system (EIS) platform, boosting persistence of implemented measures, identifying additional opportunities, and facilitating benchmarking.



ASHRAE Region VI, Technology Award, First Place (Healthcare, Existing Building Commissioning), 2021

ASHRAE Illinois, Excellence in Engineering Award, 2020

Retro-Commissioning and Monitoring-Based Commissioning

Spring Valley Hospital Medical Center’s systems include three electric centrifugal chillers (two constant speed, one variable); three variable speed cooling towers; three dedicated condenser water pumps; a plate-and-frame heat exchanger; two air-cooled operating room air-handling units and one hybrid OR AHU; 24 other major AHUs (all rooftop units); two natural gas-fired hot water boilers; two variable volume secondary hot water pumps; two steam boilers; and two heat exchangers serving the domestic hot water system.

GBA reviewed the chiller plant, boiler plant, and each AHU to determine existing sequences of operations and identify energy saving measures. Selected measures are summarized below:

  • AHU optimization: DAT reset, static pressure reset, economizer optimization, VAV and fan-coil unit scheduling, and building pressurization control. (Shown above: Economizer changeover setpoint for an AHU increased to the ASHRAE-recommended outdoor air temperature of 75°F; graph shows damper modulation based on outdoor air temperature.)
  • Chilled water optimization: Condenser water temperature reset, chilled water supply temperature reset, secondary chilled water pump differential pressure reset, and pumping and heat exchanger modifications, including replacing/upsizing the plate-and-frame free cooling heat exchanger and installing a variable frequency drive to control flow through the heat exchanger.
  • Boiler plant optimization: Hot water pump differential pressure reset.

Several operations and maintenance issues were also identified and corrected, including VAV box sensors that were no longer operating properly. MBCx and EIS platforms were launched, allowing continuous monitoring and review of repetitive data. Continued monthly review has provided monitoring support of the persistence of the implemented measures — an especially useful tool when systems were manipulated to support pandemic response.

The project met the UHS corporate goal of reducing HVAC energy costs by 20%; the bundled simple payback was 4.4 years, including an electric utility incentive of more than $55,000. Electrical savings for implemented measures were calculated at more than 1.11 million kWh, and natural gas savings were 25,000 therms, for a total combined cost savings of $97,700/year. Final verified utility savings were determined to be 120% of the calculated savings for electricity and 125% for natural gas. Estimated equivalent tons of CO2 saved were 793.

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.