Fuelled by the energy transition, hydrogen is gaining popularity as a clean fuel. With hydrogen refuelling stations (HRSs) becoming more common as a result, several potential hazards arise due to the safety concerns related to hydrogen. It is therefore of the utmost importance to understand the consequences of a potential hydrogen leak in a HRS. Because the compressor tends to have a higher failure rate, this project focuses on hydrogen leaks originating there. This study investigates the consequences of both ignited and unignited leaks, and seeks to evaluate how the consequences differ depending on the type of ventilation -natural or forced- used in the compressor enclosure, the driving pressure, the hole size, and the direction of the leak.