Chappaqua Crossing is a reimagined mixed-use campus in northern Westchester County, combining office, retail, medical, and community spaces within a former corporate headquarters setting. To support an evolving tenant mix and improve long-term operating efficiency, the owner implemented a major upgrade of the campus central chiller plant at 480 North Bedford Road in Chappaqua, NY.

ELECSYS provided mechanical and electrical engineering services to modernize the plant, replace aging chillers with high-efficiency equipment, and integrate new controls and power distribution to meet current performance and reliability expectations.

Working as part of a design–build team, ELECSYS evaluated existing conditions, supported upgrade strategy development, and prepared coordinated design documents for new chillers, pumps, and associated electrical infrastructure. The scope included reconfiguring the central plant to improve redundancy and resilience, upgrading feeders and protection for major mechanical loads, and integrating new equipment into the campus automation system for improved monitoring and control.

Because the campus remained active during implementation, minimizing disruption to tenants was central to the approach. ELECSYS supported design–build coordination through responsive design clarifications, field issue resolution, and ongoing communication with the owner, contractor, and facility staff to keep the project aligned with long-term asset-management goals.

By pairing high-efficiency chillers with optimized control sequences and modern electrical distribution, the upgraded central utility plant is designed to reduce energy consumption, lower operating costs, and cut greenhouse-gas emissions while maintaining reliable comfort across multiple buildings.