Central heating is a very efficient system of heating up the house during winters, and therefore it is cheaper than other forms of heating. In addition, there are many controls available and there is a uniform distribution of heat. When combustion of gas is used for the generation of heat, it is called as gas central heating. A gas central heating system has a thermostat that tells it to switch off when the temperature reaches a certain higher limit, and switches on when the temperature reaches a lower limit. Therefore the turning on and off is automatic and you do not need to worry about doing this yourself. This also helps to maintain the house at a more or less uniform optimal temperature. In addition, gas central heating is quite efficient with respect to fuel consumed. The heat generated by the combustion of the gas is distributed using water.