Gas-fired boiler is an important type of clean heating bioler at present. It can achieve stable heating effect while realizing environmental protection by adopting intelligent control. According to the experience summary, the heating area of 15-ton gas-fired hot water boiler is 100,000-150,000 square meters, which is affected by factors such as building structure, height, thermal insulation, difference between north and south, etc. As a professional gas-fired hot water boiler supplier, ZOZEN Boiler has a boiler capacity of 1-110t/h, 0.7-116MW, and its nitrogen oxide emission is less than 30 mg/nm3.