So long as you are not cold, then it should not be a problem. Cold rooms and strong air blowing make some people very stiff in the neck, shoulders, and other joints. This could make it not so easy to move carefully, and increase risk of injury. Practice with awareness and be sure you warm up appropriately for your environment.
If the air is cold and dry it can also make the nostrils and throat sore after some practice. This could cause some issues for breathing comfortably or any practice of pranayama. If you encounter this, then try to keep the a/c low when you practice, so that the air can be more moist, or practice a time of day when you do not need the air on so much - like early in the morning.
Otherwise, there is no innate detriment to a/c. It is always good to practice where you are most comfortable, so just be very aware and you should be fine.