Boiler power is 20kW and it is intended for heating system of smaller residential units and family houses with the possibility of food preparation. It works on solid fuel. It is intended to work in temperature regime 90/70. The name "condominium" does not exclude its possibility to heat more than one storey, under the condition that the heating necessities are in the compliance with its power. Dimensions and design of the boiler can be easily combined with modern kitchen furniture. Installation is possible in some other parts of a house of some other rooms where exist chimney. Storey Boiler has two firing regimes: winter (maximal) and regime of reduced power, by which is enabled energy savings. When using the regime of reduced power, only upper grilles are used.