Henry Adams provided the mechanical, electrical, plumbing engineering design for the renovation of the historic David Wills House, where Abraham Lincoln penned a portion of his Gettysburg Address. The design included the following: three constant-volume direct expansion air-handling units serve the three-story structure with remote air-cooled condensers; a gas-fired boiler provides hot water for heating coils in each air handler; and energy recovery ventilators pre-condition outdoor air to each air-handling unit. In addition, a new plumbing system and wet-pipe sprinkler system serve the building. The renovation also included electrical and telecommunication systems.

Additional Information:

Location	Gettysburg, PA
Construction Value	$7,200,000
Owner	National Park Service
Architect	GWWO, Inc./Architects

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