View Equipment Welcome To Mountain West Dairy Services Mountain West Dairy Services has been providing refrigeration services, complete dairy barn services, agricultural equipment, and agricultural supplies since 2001. Equipment Projects Idaho Falls Preston Contact Us Contact Us at Mountain West Dairy 3744 N. Haroldsen Dr.Idaho Falls, ID 83401 117 E. 4th St.Preston, ID 83263 (208) 522-0672 Idaho Falls Shop Location Preston Shop Location