I run the convector when needed in a basement room (with me the working space for artisan work) with 12 square meters. He brings this space in a relatively short time on a pleasant warmth (these are with me 19-20 degrees). Then I can go back to the lowest heat setting. That's enough then. The fact that he is very quiet, there is Gafahr that you forget to switch off the convector when verläst the room (one works not every day), so I have the convector coupled in winter with the light switch. A recommendable device. I previously had a convector of Aldi, which has one thing above all: stank like the plague, even after weeks. Aldi has withdrawn.