The main objective of this work is development of High Efficiency Heatpump System for Battery Electric Vehicle. In this study, the heating capacity and power consumption of the Heatpump System were analyzed on the air source and coolant source. This Experimental work has done with variations of ambient temperatures in the wind tunnel. And results for test shows that coolant source type is lower power consumption than air source type. And, to make high efficiency, coolant heatpump system is applied some items to grab at heat loss. This work get results that power consumption was saving 25% and 45% by base system at each 0℃ and ?20℃ ambient temperature.