Should You Open the Windows When the Car is Exposed to the Sun?
2 Answers
Generally, it is advisable to open the windows for ventilation after the car has been exposed to the sun, as the evaporated formaldehyde is harmful to health. Below are some points about exposing the car to the sun: 1. Purpose: Exposing a new car to the sun accelerates the movement of formaldehyde molecules, thereby dispersing the formaldehyde gas retained inside the car. This not only helps eliminate the odor of the new car but also allows fresh air to circulate, greatly aiding the overall air circulation in the vehicle. 2. Precautions: The car should not be left exposed to the sun continuously, as prolonged exposure can accelerate the aging of the interior seats and even release more harmful gases.
Every time my car is parked under the sun for a whole day, I always open the windows a bit for ventilation before getting in, otherwise the wave of heat hits me and makes me feel awful. Opening the windows allows the hot air to escape, lowering the interior temperature and reducing the risk of plastic aging or electronic devices overheating. My approach is to crack the window slightly—not too wide—to avoid dust or rainwater getting in, especially when parked in the city where crowds increase the risk of theft or debris falling inside. I also recommend using a sunshade to cover the front windshield and opening the windows five minutes beforehand to let the heat dissipate before starting the car. Without opening the windows, the car feels like a steamer inside, and turning on the AC immediately puts extra strain on the fan, whereas natural ventilation saves both money and energy. Overall, opening the windows after sun exposure is wise, but it’s important to choose a safe time and place.
