>>12336817The true answer is that it depends on a lot of things: what kind of heater we're talking about, the power output, the size and geometry of the room, the furniture in the way, the starting temperature and humidity of the air. Most of all however it depends on your definition of "better": are you interested in an even heating of the volume of air, or you're interested in the efficiency of the heat allocation (having heat spread in all corners of the room may not be beneficial as it's not where you will be able to perceive such temperature). My wild guess is that it mostly doesn't make a practical difference, although it's probably measurable and can be simulated.
