2RW provided MEP engineering services for the complete renovation and addition to the Orange County High School. During design, the building was analyzed at each phase to assure compliance with the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) 90.1 Energy Standards.

The mechanical system replacement included a 4-pipe heating, ventilating, and air conditioning (HVAC) system with air cooled chiller and ice storage, new boiler to supplement existing boilers, dedicated outside air energy recovery units, and direct digital control (DDC) building automation system (BAS).

New plumbing systems included domestic waste/vent and water supply piping, domestic water heating, low-consumption fixtures, and fire protection sprinkler systems.

The building electrical service equipment and building distribution systems were replaced: all new lighting with automatic dimming controls, site lighting and empty raceway systems for technology and cable television systems, fire alarm system, an integrated intercom, and master clock system.