Are the hostels of BITS Goa air conditioned?

No. They are not.
But the rooms are single occupancy and come equipped with a bed, a chair,a study table and an almirah.
You won’t need an AC until the summers.
It’s hot only during the comprehensive examinations of the second semesters. So almost everyone is sitting in the library or some empty classrooms which are fully air conditioned.
So, basically you won’t need an AC to live here.