OTTAWA (AP) -- Dany Heatley has found a solution for his offensive woes: stick to the basics.
After scoring just three goals in 13 games, Heatley has four goals in his past two contests, both wins for the Senators.
"When you get into a slump, sometimes offensively you try and do too much and not shoot the puck," Heatley said. "I think we've all been guilty of that and the last two nights we've just tried to make the game simpler."
Gerber made 28 saves. He lost his shutout bid when Glen Murray scored with less than three minutes to play in the third period.
The Bruins have just one win in their past six games, scoring just seven goals. They have been shut out 1-0 twice, including a shootout loss to the New York Rangers Sunday.
"We're kind of struggling to score goals, but before this game we got three out of four points, so it was pretty good before this game," rookie David Krejci said. "We've got to bear down and try to score on our chances. I think we played pretty good until they scored two goals. We had some good chances early on but we just can't score. We need to bury those opportunities."
The Senators scored three times in the second, including twice on the power play. Heatley opened the scoring at 5:44 with a wrist shot from the along the boards just seconds after Gerber made a stop off Boston forward Phil Kessel.
A little more than five minutes later, Heatley beat Auld while on the power play with another wrist shot, this time as he stood on the face-off circle to the left of the Boston goalie.
With less than three minutes to play in the period and the Senators again on the power play, Spezza used his long reach to sweep a rebound past Auld, who had stopped the original shot from Heatley.
Heatley scored into an empty net to complete the hat trick.
The Senators finished 2-for-3 with the man advantage while the Bruins were 0-for-5.
Senators RW Shean Donovan has no points in his last 20 games. ... So far this season in head-to-head meetings, the Senators have outshot the Bruins 186-149 but have been outscored 14-12. ... Neither team had a player wearing the "C" last night in place of the injured captains. ... The Senators recorded their 29th consecutive sellout.