hot! hot enough on one side to fry an egg, over easy. If the lights working and its not making a racket your ok. Check this thread youll need about the same 400cfm fan power. http://forum.grasscity.com/showthread.php?s=&threadid=19944 this one for great fans, 2 of these would do it. http://forum.grasscity.com/showthread.php?s=&threadid=19840