The gas used in this product is ordinary liquid gas. For outdoor use only connect cylinders to work. It has a maximum power of 12 kw/h and a minimum power of 5 kw/h. It mainly USES infrared radiation to provide heat. It has the characteristics of high heating rate, fast heating, wide heating range, safety, environmental protection and beautiful appearance. Can not be used in a small sealed environment, indoor use should pay attention to the circulation of air. Generally in the air exchange room can be used to more than 50 square meters. It depends on the flow of air. 15 kg of liquefied gas can be used continuously for about 20 hours at the maximum heating time, and for about 48 hours at the minimum heating time.