In this study, performance of a domestic gas burner from a gas cooktop will be evaluated. Compared to the induction and radiant cooktops, gas cooktops are less efficient, and they cause indoor air pollution. Air pollution is a global hot topic and fossil fuels are one of the biggest sources of it. Natural gas is widely used throughout the world and with this wide usage, gas cooktops are still preferred since it is also cheaper than electricity in some countries. Even though air pollution is a hot topic, the lack of indoor air quality regulations makes pollutant emissions from gas sources dangerous to human health. Even if a small improvement in efficiency or pollutant emission rate is performed, it will lead to a large impact on the global natural gas consumption or global air pollution. The aim of this study is to see effects of changing loading height on domestic gas burners. To make observations, experimental studies, which will be supported by numerical studies, will be performed according to requirements of European Norm.