Solid fuel boilers have three main advantages. Firstly, they are affordable, have a low price and do not require connection to the electric network, that is, the machine operates in the way. However, the shortcomings of these boilers are also obvious. A solid fuel boiler has a low efficiency, there is no way for the boiler to work in full automatic mode, as well as constant exactingness in regular loading of the required fuel. From the fact that the ash is quickly formed, there is a need for regular cleaning of the ash.