The Gold Coast product would make his BBL debut if selected in the starting side against the Sixers, the second player in as many games to make their inaugural appearance with the Heat after pace bowler Jack Prestwidge debuted earlier this week against the Sydney Thunder.
The former Australian Under-19 player impressed in his handful of games for the Queensland Bulls during the JLT One Day Cup, taking eight wickets at 23.62 in the tournament.
Kuhnemann comes into the squad for quick Mark Steketee who will turn out for Valley tomorrow in their Kookaburra Premier Grade T20 semi-final against Sunshine Coast at Buderim. University of Queensland will host the other semi-final against Western Suburbs at St Lucia.
The Heat has only beaten the Sixers once in the BBL, with the two teams playing off in the first ever BBL match at the SCG.
Brisbane sits in sixth spot after sharing the points in the no-result against the Thunder. They are one point behind the Sixers and Adelaide Strikers.