I was looking for patio heaters and I stumbled up on these heaters in my search. Gave it some thought and decided to get them considering the amount of heat 40K BTU it generates and also being not very tall, my theory of getting more heat than patio heaters was right. These heaters are awesome if you  sit outside in your patio. Two of the heaters will easily warm about a group of 8 people if they sit around the heaters.