Larsen, who turns 44 June 28, replaces John Tortorella after the Blue Jackets announced May 9 he would not return after six seasons.
Larsen was an assistant under Tortorella and Todd Richards for seven seasons and coached Springfield of the American Hockey League from 2012-14. Larsen was given a three-year contract.
"As far as who I am, I am firm but fair," Larsen said Friday. "I think I 100 percent believe in honestly, accountability. I think that's why 'Torts' and I saw eye to eye so well. (But) I probably will handle things differently than 'Torts' because that's who I am."
Larsen said making sure he was a good fit for the position was the most important part of the process in becoming Blue Jackets coach.
"There was no timetable on it," he said. "Even interviewing for this, I said, 'I'm not chasing a head coaching job. I want to make sure that you feel like I'm the right guy. And if not, that's OK, I'll move on and we'll figure things out.' "
Larsen
played eight seasons
in the NHL and scored 48 points (19 goals, 29 assists) in 294 games as a forward for the Colorado Avalanche and Atlanta Thrashers.