Rapidly advancing technological improvements, growing population on the world, and the increasing energy requirements in parallel to such facts had been seen numerous problems along with. Today, the limited fossilbased energy sources, the continuous increase in the consumption and depletion of these energy sources increasingly leads to constantly increasing energy prices. Moreover, when these energy sources are used unconsciously, this case causes the environmental problems, especially air pollution. Air pollution reaches deadly proportions in the winter months; in this regard, it is emphasized the importance of the pollution arising from fuel. In this study, the emissions released to the atmosphere are determined according to fuels used in the dwellings located in the center of Afyon. It is attracted attention to use the geothermal energy and natural gas for space heating. Furthermore, the contribution on prevention of air pollution arisen from geothermal energy and natural gas usage is exhibited with up-to-date numbers as it is a example to other cities possessed sources used in Afyon. The results show that the local emissions of $SO _2$ and PM associated with fuel combustion have been reduced annually by 1.7 thousand tons/year and 421 tons/year for geothermal energy and 0.2 tons/year and 3.8 tons/year for natural gas, respectively. From Afyon example, space heating with geothermal and natural gas prohibits the release of $SO _2$ and PM emissions in large quantities.