A new method for controlling heat using pressure has been developed, based on the supercooled plastic crystal state of 2-amino-2-methyl-1,3-propanediol (AMP). This material exhibits a high sensitivity to pressure, allowing for precise and efficient heat regulation. When subjected to pressure, AMP undergoes a phase transition that results in a significant temperature increase. The study demonstrates a proof-of-concept device capable of converting work into heat with an efficiency of approximately 383, highlighting the potential for efficient waste heat utilization. The research shows that pressure can be used to control heat in a way that is more effective and scalable than traditional methods. The findings suggest that this approach could significantly improve the management and reuse of waste heat, contributing to more sustainable energy practices. The study also identifies the existence of a glassy crystal state in AMP, which has unique properties that make it suitable for heat regulation applications. The results indicate that this material could be used in various thermal energy storage and management systems, offering a promising solution for addressing energy efficiency challenges.A new method for controlling heat using pressure has been developed, based on the supercooled plastic crystal state of 2-amino-2-methyl-1,3-propanediol (AMP). This material exhibits a high sensitivity to pressure, allowing for precise and efficient heat regulation. When subjected to pressure, AMP undergoes a phase transition that results in a significant temperature increase. The study demonstrates a proof-of-concept device capable of converting work into heat with an efficiency of approximately 383, highlighting the potential for efficient waste heat utilization. The research shows that pressure can be used to control heat in a way that is more effective and scalable than traditional methods. The findings suggest that this approach could significantly improve the management and reuse of waste heat, contributing to more sustainable energy practices. The study also identifies the existence of a glassy crystal state in AMP, which has unique properties that make it suitable for heat regulation applications. The results indicate that this material could be used in various thermal energy storage and management systems, offering a promising solution for addressing energy efficiency challenges.