A cryogenic fluid transfer system comprising: a. a dispensing tank having a dispensing tank headspace , said dispensing tank configured to store a supply of cryogenic liquid with the dispensing tank headspace above the supply of cryogenic liquid; b. a receiving tank having a receiving tank headspace ; c. a compressor having an inlet and an outlet; d. a compressor inlet line in fluid communication with the receiving tank headspace and the compressor inlet; e. a compressor outlet line in fluid communication with the compressor outlet and the headspace of the dispensing tank; and f. a liquid transfer line in fluid communication with the dispensing tank and the receiving tank and configured to transfer cryogenic liquid from the dispensing tank to the receiving tank when the compressor is activated so as to transfer vapor from the headspace of the receiving tank to the headspace of the dispensing tank to create a pressure differential between the dispensing and receiving tanks g. a heat exchanger having an inlet in fluid communication with the headspace of the receiving tank and an outlet in fluid communication with the inlet of the compressor, said heat exchanger configured so that vapor from the headspace of the receiving tank is warmed in the heat exchanger before traveling to the inlet of the compressor, the heat exchanger including a first passage and a second passage in heat exchange relationship with one another, said second passage having an inlet in fluid communication with the headspace of the receiving tank and an outlet in fluid communication with the inlet of the compressor and said first passage having an inlet in fluid communication with the outlet of the compressor and an outlet in fluid communication with the headspace of the dispensing tank, said heat exchanger configured so that vapor warmed by compression in the compressor travels through the first passage of the heat exchange and heats vapor flowing through the second passage of the heat exchanger. a. a dispensing tank having a dispensing tank headspace , said dispensing tank configured to store a supply of cryogenic liquid with the dispensing tank headspace above the supply of cryogenic liquid; b. a receiving tank having a receiving tank headspace ; c. a compressor having an inlet and an outlet; d. a compressor inlet line in fluid communication with the receiving tank headspace and the compressor inlet; e. a compressor outlet line in fluid communication with the compressor outlet and the headspace of the dispensing tank; and f. a liquid transfer line in fluid communication with the dispensing tank and the receiving tank and configured to transfer cryogenic liquid from the dispensing tank to the receiving tank when the compressor is activated so as to transfer vapor from the headspace of the receiving tank to the headspace of the dispensing tank to create a pressure differential between the dispensing and receiving tanks g. a heat exchanger having an inlet in fluid communication with the headspace of the receiving tank and an outlet in fluid communication with the inlet of the compressor, said heat exchanger configured so that vapor from the headspace of the receiving tank is warmed in the heat exchanger before traveling to the inlet of the compressor, the heat exchanger including a first passage and a second passage in heat exchange relationship with one another, said second passage having an inlet in fluid communication with the headspace of the receiving tank and an outlet in fluid communication with the inlet of the compressor and said first passage having an inlet in fluid communication with the outlet of the compressor and an outlet in fluid communication with the headspace of the dispensing tank, said heat exchanger configured so that vapor warmed by compression in the compressor travels through the first passage of the heat exchange and heats vapor flowing through the second passage of the heat exchanger. <EOS>