OK, I am going to contribute my 2cents, I did try this, after seeing all the debunking vids. My living room is 129cubic meters, I put this to the test and found that it did make a difference, enough that I could turn off my electric radiator. The feeling of heat was good inside of 1m, and I was aware of the effect through-out the room. Was it a real heating effect or the illusion of warmth generated by this apparatus, I don't know, but I felt comfy, and that was enough for me.