Whidbey General Hospital Expansion

Designed to serve Whidbey Island as one of the most energy-efficient hospitals in the Pacific Northwest, this 60,000 sf expansion to Whidbey General Hospital consisted of a maternity unit (labor, delivery, recovery, postpartum), intensive care unit, patient rooms, material management, and a USP 797 pharmacy. As mechanical and electrical engineers for the project, Coffman implemented modernized systems, including a variable refrigerant flow heat pump system, to reduce energy use by approximately 40 percent. Coffman also upgraded the existing medical gas system and a 10,000 sf heavy remodel for a new perioperative department. The University of Washington Integrated Design Lab performed energy modeling of the project showing better than 100 kBTU/sf performance, and Puget Sound Energy (PSE) has confirmed similar actual consumption.


  • Healthcare


  • Electrical Engineering
  • Mechanical Engineering
  • Sustainable Design