Jaroslav Halak made 26 saves, and Brad Marchand had three assists for the Bruins (23-7-9), who have won two in a row and are 3-0-3 in their past six games.
"The goaltender, if he's not ready to play, you're going to be in trouble, and their guy was too," Boston coach Bruce Cassidy said. "There were some good saves in the first period both ways, not overly taxing for either but some point-blank chances, got themselves an opportunity to get in the game. Took a couple of good plays for us to finally get to the back of the net, and Jaro was there on their good plays."
Quick passing on the power play ended with Bergeron scoring from the slot to give Boston a 1-0 lead with 22 seconds remaining in the first period. He made it 2-0 from the right side off a pass from Marchand with 1:34 left in the second.
"I think it's about moving our feet," said Bergeron, who has 17 goals this season. "Every time we're doing that, I thought on that second goal that's how we created that space by reading each other well and knowing where we're at."