Heating device

A heating device with a combustion space having at least one free side, said heating device comprising a substantially C-shaped heat exchanger open to the front for heating air, said heat exchanger being provided with a lower heat exchanger part on which solid fuel can be laid, said lower part connecting onto a standing heat exchanger part that in turn connects to an upper heat exchanger part such that said heat exchanger bounds said combustion space, characterized in that

• the lower heat exchanger part further comprises a chamber in communication with outside air to be heated and having a wall adjoining the combustion space, through which chamber wall at least one substantially vertical channel extends connecting said combustion space with surrounding air for a supply of air, and
• supporting means slidably carrying an ash pan having at least one aperture communicating with outside air, said supporting means comprising a compartment with an upper wall in communication with the at least one vertical channel whereby outside air is supplied via the at least one ash pan aperture to the combustion space, said compartment being positioned in the chamber of the lower heat exchanger part such that at least one passage is formed by the ash pan and a wall of the chamber whereby outside air communicating with the chamber is heated by the combustion space and flows at least partially around said compartment to the outside.