In our study, the effects of the Tricklevent passive ventilation system with the international patent application number 2013/08326 on thermal comfort and energy saving were examined. Tricklevent innovative passive ventilation system is a ventilation system placed on the facade and controlled by an automation system designed vertically or horizontally. In our study, a 14 m2 prototype room with Tricklevent system was built and measurements were taken from places determined by thermocouples as the system was closed-open. The tests were conducted at 11:00 am during the hottest hours of the day on August 15-16, 2021. The system was also analyzed with computational fluid mechanics software. For numerical analysis, the Re number was calculated and it was determined that the flow was turbulent. The k-Ɛ turbulence model was used in the analyses. In the analysis, independence from the network was studied. The Discrete Transfer model was used as the radiation model. 1009 W/m2 solar load is defined. The velocity of the ambient air is calculated as 1.94 m/s, the pressure difference is 2.19 Pa and the air flow to be taken from the system is calculated as 0.024 m3/s. According to the results obtained in the tests, it has been determined that when the Tricklevent system is turned off, the indoor temperature exceeds the ambient temperature within 16 minutes with the effect of radiation, and the indoor temperature reaches a maximum of 30 °C in 16 minutes and 34.5 °C after 24 minutes when the system is on. It has been determined that a temperature drop of 2-3 oC is sufficient when Tricklevent Y.P.H.S is on, while the air conditioner should provide a temperature drop of approximately 6.5-7.5 oC when the system is off. It has been observed that the compressor operating time will be longer when the system is off. As a result of the study, it was seen that 14 kWh energy saving was achieved in the prototype room. According to the power of the air conditioner, as a result of not operating the air conditioner for 16 minutes, 16% savings were achieved in a 1-hour period. Depending on the height of the building, the operating time of the air conditioner can be up to 34 minutes with the advantage provided in air flow and temperature. This showed that the energy savings to be made can be between 16-50% in 1 hour time.