Energy consumption has increased a lot during the past two decades. It has increased the cost of energy a lot, and it has constantly led to the inventions of alternative ways of harnessing energy. Freon Wheels are one such ways of harnessing low grade energy with Minimum pollution. It could be used in areas where there is waste heat or in tropical regions where solar energy is wasted. This method is also eco friendly and at the same time may even reduce the cost of producing crude oil. In this context a new device (Freon wheels) that is a gravity engine driven by thermal gradient for converting Waste/solar heat into useful work is proposed and its efficiency is studied. The fabrication of Freon wheel is done by using four cylinders as per the design. The cylinders are welded together with 900 each other to the shaft, the bearing are mounted on the both ends of the shaft. The experiment is conducted on the equipment by providing some means of heat source and the speed is obtained by the Freon wheel is 10rpm.