The thirst of energy is one of the biggest challenges the world is facing today. The search for new alternative and renewable source of energy is being studied worldwide. The emission of harmful gases such as NO x , SO x , CO and CO 2 and other greenhouse gases in the environment contributes to the global warming and also causes health related problems. Polyethylenes are substances which take longer time for its decomposition and are one of the biggest threats to the environment. The waste polyethylene was thermally de-polymerized and during such process the gases recovered were studied. The study was carried out on low-medium and high-density polyethylene mix. The study of the waste polyethylene into useful hydrocarbon products provides scope for further investigation on this field for the production of domestic fuel. The comparisons of the recovered gases with the LPG gas components were also studied and there fuel property is discussed. This paper describes the gaseous hydrocarbon components recovered during the process of thermal degradation of polyethylene. The component recovered and their importance as fuel is also studied.