IIT Bombay has top-notch facilities including Air Conditioned classrooms decked with necessary amenities.
There is a classroom in the Lecture Hall Complex that is huge enough to accommodate 300 students. The complex has 3 such classrooms and 4 others that have a capacity of 200. In addition to this, there are tutorial rooms that can accommodate 40 students. All these rooms are air-conditioned.
The lecture halls of freshers are also huge since the number of students is more than usual. These rooms also have a centralized AC system.
However, right after the first year, students are divided into various departments and the total strength decreases. The lectures are then held above complexes or the department building.
Leaving some, most classrooms at IIT Bombay have ACs.