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U.S. General Services Administration



Enovity and GSA have cut energy use at this regional headquarters by more than 25% thanks to performance-focused maintenance, commissioning, and energy efficiency.

The Phillip Burton Federal Building shows what a committed owner and operations and maintenance partner can accomplish when they work together to optimize energy performance. The 21-story regional headquarters has been the focus of several sustainability initiatives over the years, dating back to the first demonstration of BACnet building automation systems in 1997.

Enovity implemented 450’s first outsourced O&M program, delivering comprehensive operations, maintenance, and repair services through a performance-based contract. A team of 15 on-site engineers maintains all of the HVAC, electrical, fire/life safety, plumbing, and architectural systems. The site team includes factory-trained Alerton controls technicians who perform all of the controls work.

From the start of the contract, Enovity has worked to optimize the energy performance:

  • Automated fault detection and diagnostic tools monitor the building’s eight air handling units and 1,200+ VAV boxes, alerting operators when performance drifts.
  • A digital lighting system controls based on occupancy and daylight, and dims for demand response.
  • Submeters track energy use at the system and equipment level.
  • Water efficiency strategies include metering cooling tower make-up and blowdown to account for evaporation, and installing low-flow fixtures in restrooms.

All this data empowers the on-site technicians to quickly diagnose and correct issues, drawing on Enovity’s energy efficiency experts for support as needed.

The results prove the merit of performance-focused O&M. Through this integration of preventive maintenance, ongoing commissioning, and energy retrofits, the Enovity and GSA teams have cut electricity use by 26% and natural gas use by 41% since 2003.