… by adding a Peltier-fan: the temperature difference between the cooler upper part and the heated lower part connected to the stove produce current that makes the fan turn.
https://www.hornbach.ch/shop/Kaminofen-Ventilator-Eurom-waermebetrieben-schwarz/4615210/artikel.html
![](https://i0.wp.com/www.bycycle.ch/wp-content/uploads/2019/10/image-29.jpg?resize=600%2C450&ssl=1)
![](https://i0.wp.com/www.bycycle.ch/wp-content/uploads/2019/10/img_4141.jpg?resize=600%2C450&ssl=1)
![](https://i0.wp.com/www.bycycle.ch/wp-content/uploads/2019/10/img_4142.jpg?resize=600%2C450&ssl=1)