As a natural consequence of the increase in the world population, energy needs are also increasing dramatically. At the present time natural gas and coal are generally used as energy sources. According to researchers, oil, natural gas and coal reserves will be run out in the near future. Therefore, new and renewable energy is needed to meet the energy needs for our countries. A lot of researchers have been carrying out about field of alternative energy sources. These studies generally; such as solar energy, wind energy, geothermal energy, wave energy and biomass energy. In addition to these energy conversion systems, it was also possible to mention about heat pumps with the features of low energy consumption, high coefficient of performance and environmental friendly. The presented paper is a study of general description and basic approaches on ground sources heat pumps. Ground source heat pump and history of it were explained. Some explanations were given about Ground Sources Heat Pump Systems such as Working principles, type of it, general view of advantage and disadvantage of it, hybrid type ground sources heat pump systems working principles, zero carbon footprint approach for it and also heat pump investment comparison with other systems.