Comprehensive Modernization

Known as “America’s First Museum of Modern Art,” The Phillips Collection occupies a group of interconnected buildings in Washington, D.C.’s Dupont Circle neighborhood, anchored by a four-story Georgian Revival house constructed in 1897. Since opening to the public in 1921, the museum has combined an intimate, residential setting with a world-class collection of modern and contemporary art.

In advance of its centennial, the museum undertook a comprehensive modernization of its historic house gallery to enhance the visitor experience and strengthen the long-term protection of its collections.

Upgrading Environmental Control in a Landmark Setting

The renovation focused on replacing outdated building systems with modern, energy-efficient solutions that improve temperature and humidity control, provide zone-level flexibility, and reduce long-term maintenance demands. Gallery and support spaces within the historic house were equipped with a fully digitized environmental control system designed to meet stringent museum preservation requirements while maintaining visitor comfort.

Despite the complexity of the work, the museum remained open throughout construction, allowing continued access to exhibitions and public programs while systems were upgraded behind the scenes.

Engineering Solutions That Balance Performance and Preservation

Mueller Associates provided mechanical, electrical, plumbing, and fire protection engineering services for the project, supporting Bowie Gridley Architects in modernizing the building’s infrastructure without compromising its historic character.

Mueller’s work included designing new HVAC systems to improve thermal performance and humidity control, integrating a new building automation system, and upgrading fire suppression, fire alarm, electrical power, lighting, and plumbing systems. Major mechanical equipment was consolidated within a discreet, architecturally screened rooftop penthouse, reducing visual and operational impacts while significantly improving system accessibility and reliability.

A Foundation for the Next Century

By modernizing environmental controls and minimizing maintenance challenges, the project laid critical groundwork for the Phillips Collection’s next century of operation. The upgraded systems provide museum staff with greater control, resilience, and flexibility—quietly supporting conservation, comfort, and ongoing public engagement within one of the nation’s most distinctive museum settings.