The tertiary stepped combustion is created by injecting air at the temperature of the exhaust gas around the perimeter and lowering of the combustion chamber, resulting in the ignition of the exhaust gas wherever they are located.

This method gives us multiple temperatures and at the same time almost zero exhaust gases, which together with the advanced system of heat transfer to the water gives us perhaps the only fireplace in the world with such a high thermal and ecological efficiency. In this way we achieve stability in its operation and performance.