IMEG provided mechanical, electrical, and plumbing engineering design and services for the Four Seasons Resort at Calistoga, built on 29 acres designed to be integrated with the golden hills of Calistoga, CA. The goal was to find a complimentary balance of elegance and modern sustainability. The resort includes a lodge, banquet space, restaurant with full kitchen, spa and fitness complex, arcade, winery and vineyard, multiple pools, villa buildings, and private residences. The resort has 16 villas with 85 hotel units, 20 single family residences, and a large central pool facility.

The resort villa buildings are the Four Seasons brand’s first buildings designed with a variable refrigerant volume system. The design also included a 5,000-amp electrical distribution system, 600-ton condensing water system, and approximately 200 tons of variable refrigerant flow equipment serving the various buildings on site. The resort also has a geothermal loop field that supplements the domestic water and condenser water system.

The resort is modeled to use approximately 30 percent less energy than a standard system.

Renderings Courtesy of O’Bryan Partnership Architecture