Mike Green of the Washington Capitals nearly made the score 5-1 in the third but hit the post, with Ward foiling Kopitar soon after on a breakaway attempt.
Heatley got his hat trick at 9:35, lifting a backhander over Kristan's right blocker.
Announced attendance was 7,921, roughly 600 short of a sellout.
"It definitely felt like we were at home with the crowd behind us," said Canadian forward Jason Spezza. "They'll get more and more into it as the tourna