Renovations to the Mickey Leland Federal Building (MLFB) included upgrades to the HVAC, Electrical, Plumbing and Automation systems that improved occupant comfort and conserved the energy and water associated with these systems. Overall, the scope included upgrades to the chiller plant, and replacement of the air distribution and lighting systems that served the occupied spaces. The air handling unit fans were based on the use of a fan array with variable frequency drives. Complementing the upgrades to the HVAC systems, the lighting systems were replaced with LED style light fixtures which include control systems based on both occupancy and daylighting.