Fire suppression system using gases is one of the most advanced fixed automatic fire suppression systems. The most common of fire suppression system using gases are clean agent systems which have clean extinguishing gases that are ineffective on environment, people and equipment. The famous types of clean extinguishing gases are FM 200 or called heptafluoropropane, Other type is NOVEC 1230, It belongs to a family of chemicals called halocarbons, a group which includes fluoroketones. There is another type of gaseous fire suppression system using Carbon dioxide as an extinguishing gas, but it’s not classified as a clean agent. Gaseous fire suppression systems protect vital locations and critical assets. Clean agent systems and carbon dioxide systems are the most common types of gaseous fire suppression systems installed in the Company facilities. In fire case, smoke begins raised up, at least two detectors must sense the smoke to activate the system for extinguishing. In reality, not only smoke of fire can activate the system. In the last four years, only 12% of total times that the gaseous fire suppression systems activated for fire reasons. According to historical investigation reports, false discharges may occur due to many causes, most important of which are environment, human error and system trouble. This research studies these factors and focused on environmental factor that is responsible of around 68% of total activated times of gaseous fire suppression systems and it found associated correlation as well as proposes physical solutions to reduce the probability of false discharges. Linear regression analysis and ANOVA analysis will be applied.