ETA SH Twin

Heating with logs is unbeatably affordable. It does not harm the climate, it strengthens the domestic economy and it is crisis-proof as wood is plentyfull in Europe. Heating with pellets is conveniently fully automatic. With the ETA Twin you can switch between both systems. The changeover from one combustion chamber to another is fully automatic. 

A modern log boiler is highly effective. Normally, you only have to add fuel once a day, on very cold days maybe twice. But a log boiler can never run fully automatically.