Heating in greenhouse is one of the oldest horticultural revolution. Generally, hot water boiler is widely used as the central heating system. A central boiler is used to heat water between about 120 F and 180 F. With the technology developed, hot air stove is used more and more widely, which could instead of the hot water boiler for central heating, more over, it could used for crops drying. Sitong Boiler could customize specific boilers based on users’ requirement.