Oh yes indeed that's what I teach.  Not Bikram but heated yoga either vinyasa or power.  Temperature is one of those things that most studios allow the teachers to set within a certain range.   For example students can expect that with "Class X" temperature will be set around 90.  So if a teacher wants +/- 5 that's within their own prerogative.  And students who are regular know this so they go to who they like.  So yes I can set it to 95 or 85 and I'll choose 95.  What really screws up the fats is combination of the heat and the tempo.