A thermal liner is a type of material that is designed to provide insulation and regulate temperature in a specific area. It is typically used in construction, particularly for buildings that require high levels of energy efficiency. A thermal liner is typically made from materials that have high thermal resistance, such as fiberglass, mineral wool, or foam board.

The thermal liner is installed between the exterior and interior walls of a building or within the roof, and acts as a barrier to heat transfer. It prevents heat from escaping during cold weather and prevents heat from entering during hot weather. This helps to keep the interior of the building at a comfortable temperature while reducing energy costs.

Thermal liners are also used in other applications, such as in the manufacturing of appliances like ovens, refrigerators, and HVAC systems. In these cases, the thermal liner helps to prevent heat loss or gain, and maintain a consistent temperature within the appliance.

Overall, thermal liners are an effective way to improve energy efficiency and reduce heating and cooling costs, making them an important component in modern construction and manufacturing.