There are quite a few devices for the indoor area of this size. I needed a portable Geröt for my gazebo, but which I also can use under the pavilion. The order came, however, at the last minute. Since I had the same time ordered gas cartridges have 2 days and was finally able to try the device. The manual is available in several languages (including DE) written and understandable. I had to take a layman no problems, the heating in operation. I can yet say nothing about the life of a cartridge, we had the heater far over medium heat in operation only about 1 hour. And in the meantime it is at night so no longer sooo cold. Another tip: Even if the device is a security against lack of oxygen has always tilt the window !!!
