How do you know if a part is consumable or repairable?

A part is considered consumable if it is designed for one-time use and needs to be replaced after its lifespan, such as filters or batteries. In contrast, a repairable part can be fixed or refurbished, often involving replacing smaller components or making adjustments to restore functionality, like circuit boards or mechanical assemblies. Typically, consumable parts show significant wear or degradation that renders them ineffective, while repairable parts can still perform their function but may require maintenance to do so.