With proper storage and connection, a wood-burning stove will not rust. When a wood-burning stove rusts, it is often because it has been exposed to moisture from the chimney. You can minimize the risk of internal rust by lighting a fire a few times outside the heating season to ensure that the wood-burning stove dries out.
Especially in summer houses, where the temperature is often low indoors during winter, the temperature in the combustion chamber can become so low that water condenses on the metal surface of the wood-burning stove from the still air. The water can then cause rust. To avoid this, it is recommended to ensure ventilation in the wood-burning stove, possibly by leaving the air supply to the wood-burning stove slightly open during this period.
If the wood-burning stove rusts externally, it is usually because it has been stored in damp environments for a long time, where moisture has been able to settle on the surface.