Mechanical ventilators are increasingly used for life support of critically ill patients. In this sense, despite recent technological advances, the accurate specification of their properties remains challenging, and the use of formal tools is limited. This work focuses on verifying the properties of the architecture of a mechanical ventilator using UPPAAL as a modeling tool. As a result, the system requirements and specification of a functional prototype were verified and improved using the formal model of a mechanical ventilator. This approach provides a valuable means of ensuring the correctness and reliability of mechanical ventilator systems.