Ọrụ nke onye na-anata mmiri mmiri bụ ịchekwa ihe refrigerant nke a na-enye na evaporator.Mgbe refrigerant dị elu na-agafe site na mmetụta nkwụsị ọkụ nke condenser, ọ na-aghọ gas-mmiri mmiri steeti abụọ, ma refrigerant ga-abanye na evaporator na mmiri mmiri mmiri.Mmetụta dị jụụ dị mma, ya mere, a ghaghị itinye onye na-anata mmiri mmiri n'azụ condenser iji chekwaa refrigerant dị elu ebe a, mgbe ahụ, a na-eziga refrigerant mmiri mmiri na-esi na ala na-ezigara onye na-ekpo ọkụ, ka onye na-ekpo ọkụ wee nwee ike igwu ala kachasị mma.Nweta mmetụta jụrụ oyi kacha mma.