Quality Function Deployment (QFD) is being used as an improving method in MMS and as a guideline in highlighting the weak points in the erformance and finding the suitable procedures to overcome them to achieve the customers' satisfaction. Medical devices can be categorized as critical and non critical; the critical device is the one whose failure causes big loss in the service's efficiency and the non critical is the one whose failure causes moderate loss in the service's efficiency. Through this research, the performance of Medical Devices Maintenance Systems (MDMS) in Prince Hamzeh Hospital (PHH) was investigated and stustudied to find appropriate solutions aiming to make the medical device more available, more reliable and more reproducible. A sample size of 903 operators' questionnaires has been used to perform this study in PHH. Full descriptive analysis was performed and analyzed, as well as the QFD requirements were employed to build the new required system. A comparison was made between PHH and the Specialty Hospital (SH) to benchmark its performance and measure how much PHH is away from achieving its targets.