The CO2 heat pump air heater is capable of reaching temperatures of up to 120 degrees with a COP of 200%. Previously, the factory used electric elements to heat the air with an efficiency of 90%. By implementing an absorb rotor dryer, energy savings of 50% can be achieved. Additionally, installing a heat recovery coil after the regeneration zone can increase the COP of the CO2 air heater to 3, resulting in significant cost savings.