On May 17, 2012, the IceMen formally were accepted into the ECHL, with membership to begin in the 2012–13 season. On June 15, 2012, the IceMen announced an affiliation with the NHL's Columbus Blue Jackets and primary affiliate, the Springfield Falcons. Before the resumption of the new season on August 30, 2012 the Peoria Rivermen announced that the IceMen would be their ECHL farm club, cutting ties with the Alaska Aces. This will make the IceMen the AA affiliate of the Columbus Blue Jackets. Starting with the 2013-2014 season, the IceMen will no longer practice at Swonder, but will practice at the Ford Center.
After two seasons in the ECHL Eastern Conference, in June 2014 the IceMen were moved to the newly-created Midwest Division in the ECHL's Western Conference.