The negative consequences of global climate change have increased day by day in the world. For this reason, it has been revealed that people should use fuels that produce less emissions. The aim of the presented study is to determine the effects of shale gas components on emission characteristics and temperature distribution. In this study, combustion and emission behaviors of shale gas mixtures with different CH 4 / C 3 H 8 / CO 2 /N 2 contents were experimentally investigated. Emission and temperature measurements were performed at four different swirl numbers (0.2/0.6/1.0/1.4), at a thermal power of 4 kW and an equivalence ratio of 0.7. In the experiments, 6 different shale gas mixtures were used. As a result of this study, it has been seen that emission values vary greatly depending on the content of the shale gas. It has been also observed that all shale gases create more NO x , CO and CO 2 values than pure methane. C 3 H 8 value in the shale gas mixture caused an increase in NO x amount, axial temperature values and flue gas temperature. As the CO 2 content increased, the CO value increased, while the NO, axial temperature and flue gas temperature values decreased.