Founded in 1993, Refrigeration Unlimited (RUI) is a full-service mechanical contractor serving the Northwestern United States. Originally a commercial refrigeration contractor, RUI has expanded over time, adding services that include HVAC, high-voltage electrical systems, EMS controls, industrial refrigeration and general contracting. Dedicated to providing reliable service and quality solutions that feature the latest industry advancements, RUI is the partner of choice for many large and small businesses.