Heazlett has replaced leg-spinner Mitchell Swepson in the 13-man squad for the match, the second last home game of the summer for Brisbane.
The left-hander has been in strong form this week in the Toyota Futures League 2nd XI T20 series in Sydney, with scores of 44 off 29 balls, 32no off 14 and 30 off 22 balls as well as taking a haul of 3-8 from four overs.
It follows his 142 not out last weekend for Redlands in the Bulls Masters Premier Grade cricket competition.
Left-arm spinner Matthew Kuhnemann also played in the Futures League series this week and would make his BBL debut if chosen in the Heat starting line-up tomorrow night.
Brisbane sits one point ahead of Perth on the BBL ladder and defeated the Scorchers at Optus Stadium earlier in the series.
The final two home games of the season will commence slightly later at the Gabba, with 7.40pm starts. Tickets on sale now from Ticketek.