An exhaust fan does not inherently drop the room temperature. Its primary function is to remove stale air, odors, and humidity from a space by expelling it to the outside. While the air movement caused by an exhaust fan may create a cooling sensation due to increased evaporation of moisture on the skin, it doesn't actively cool the room or reduce the temperature.
Starting the air conditioner (AC) and exhaust fan simultaneously can be beneficial for faster cooling under certain circumstances. Here's how it works:
The AC cools the room: The primary role of the air conditioner is to remove heat from the indoor air and lower the temperature. It extracts heat energy from the room and releases it outside, using a refrigeration cycle.
The exhaust fan aids in ventilation: By simultaneously using an exhaust fan, you can facilitate better air circulation and remove hot air, especially if the room has poor ventilation. This helps prevent the accumulation of hot air pockets and allows for faster heat dissipation.
By combining the AC's cooling action with the exhaust fan's ventilation, you can enhance the overall cooling efficiency and improve the distribution of cool air throughout the room. However, it's important to note that the effectiveness of this approach depends on various factors, including the size of the room, insulation, the capacity of the AC unit, and the outdoor temperature.
For optimal cooling, it is advisable to ensure that the room is well-insulated, windows and doors are closed, and the AC is appropriately sized for the space. Regular maintenance and cleaning of both the AC unit and exhaust fan are also crucial to ensure their efficient operation.