Which trade keeps our food frozen or cooled so it can safely get to our dinner tables? The answer is Steamfitters. In today’s video from Building Wisconsin TV, host Stuart Keith meets with the pros from Summit Refrigeration Group to learn about Ammonia Refrigeration Systems. Owners, Mike Conti, Rick DeGroot and Fred Anderson give a tour along with the members from Steamfitters Local 601. We’ll check out the Summit fabrication shop, visit a cold storage construction site and finish up in the engine room of a massive cold storage food warehouse.