Hanifin, 21, has plenty of ties to the Flames besides Peters. He and Flames forward Johnny Gaudreau played at Boston College, and he played summer hockey as a kid with Calgary forward Matthew Tkachuk, his teammate with USA Hockey's National Team Development Program.
"It's good to get a little bit of a change and [be] going to a hockey town that expects success," said Hanifin, who quickly received texts from Gaudreau and Tkachuk after the trade was announced. "I'm looking forward to experiencing that Canadian hockey culture."
Carolina general manager Don Waddell and Calgary GM Brad Treliving each said change was needed.
"We've gone nine years missing the [Stanley Cup] Playoffs," Waddell said. "During the offseason, now with a new owner in Tom Dundon, we needed to change the culture a bit."
Waddell said Hamilton will help the Hurricanes too.
"You're talking about Dougie Hamilton, 17 goals as a defenseman," he said. "I think he's got 90-some points (94) the last two years, one of the premier offensive players as a defenseman in the League. We all know goal-scoring is at a premium in the League so we felt that was a huge addition for us on our blue line."