Brady Brassart, Jaynen Rissling and Jake Virtanen had the other goals for Calgary (7-1-2).
Brooks Macek added four assists to extend his point scoring streak to 10 games tying a career high.
The Hitmen outshot the Cougars 53-30, breaking a franchise record in the process for most shots in a single period with 27 in the second.
Brett Zarowny started in goal for Prince George (5-4-1), allowing all five Calgary goals on 33 shots.
Mac Engel replaced Zarowny midway through the second period and stopped all 20 shots he faced the rest of the way.