There are a few things you can do to fix a room that's too hot. One is to adjust the thermostat. If it's too hot in the room, turn the thermostat down a bit and see if that helps. Another thing you can do is open a window or door to let some of the heat out. You could also try using a fan to help circulate the air and cool things down. Lastly, make sure there aren't any sources of heat in the room that could be making things worse, like an oven or heater. If you can identify and remove the source of heat, that will help as well.