What are some household appliances that use both thermal conductors and thermal insulator?

Household appliances such as refrigerators and ovens utilize both thermal conductors and thermal insulators. Refrigerators use thermal insulators to maintain low internal temperatures while employing thermal conductors in components like the evaporator coils to efficiently transfer heat. Ovens, on the other hand, often have thermal insulators to retain heat within the cooking chamber and use thermal conductors in heating elements to generate and distribute heat. This combination ensures energy efficiency and effective temperature control in cooking and food preservation.