For every person in the room (above two), you’ll have to add roughly 750 BTUs of power for each individual. If you’re getting a joint unit for a common area in an apartment or dorm of four total inhabitants for, let’s say, a 500 square foot space, you would need 10,000 base BTUs. Plus 750 per person after the second. In total, you would need 11,500 BTUs for that shared space.
We throw off our body temperature like crazy, especially after coming in from a hot day. We sweat as a way to radiate heat instead of internalizing it, which would damage our organs and brain. As a result, you’re actually throwing off more than your internal body temperature for about four hours after exercise, or thirty minutes to one hour after entering your room from merely being exposed to high temperatures outside.