The device is used for space heating using solid fuels (natural wood logs). The device is made of steel metal parts, of cast iron metal parts (bottom rack) and of glass surfaces lining the flame port (ceramic crystal). The device is powered manually and is intended to be installed as a freestanding device. Combustion air enters with a natural flow from four (4) longitudinal openings located in the body of the device below the flame port. Combustion air is fed directly into the combustion chamber without preheating. The flue gases produced during the fuel combustion process are led to the mouth of the flue located on the roof of the combustion chamber, diverted by an internal steel deflector installed on the roof of the combustion chamber. The ash is guided by gravity through the lower grate into the urn located below the firebox. The approach to the urn requires the opening of the firebox.