Refrigerants are substances, generally fluid, that are used in the refrigeration system. This refers to chemicals used as a cooling substance in various appliances like refrigerators and air conditioners. They follow the cycle of conversion from liquid to gas and gas to liquid again. There are instances of working fluid that have been used for the purpose of refrigeration. The gasses that are used in the process of refrigeration are very hazardous to human beings. It causes severe damage to the skin, eyes, and the respiration system too. So detection of these gases is very significant.