Automatically switching from one system to another is so easy because the TWIN consists of a fully-fledged wood gasifier and a fully-fledged pellet burner. Both devices are perfectly adapted to their respective combustion materials: a patented hotzone combustion chamber ensures a particularly thorough burn-out in the log boiler. And with the aid of a lambda probe the boiler automatically adapts the supply air to the current wood quality. This achieves the best possible heating output from any wood. The lambda probe detects the suitability of the combustion material in the pellet burner too. In both devices, efficient systems ensure problem-free cleaning and de-ashing. That's comfort and money saved!