Lower The Windows Before Switching the Aircon On - Should this be the practice?

[ironman06]

thanks for the replies. however, the real reason I'm asking is - have you heard of that case (played/told on the video) re: cancer-causing agents?

I believe the video also told that there are still cancer-causing agents even if not parked under the sun (for e.g., at night). hence, at night, the windows should be open by the time you switch on the AC.

what do you think?

Everything everywhere has carcinogens. From the food you eat to the air you breathe, but in very minute amounts which can be eliminated by the body in time. So if carcinogens are your reason to ask, then I think it wouldn't matter. I'd be bothered more about the heat in the car than those carcinogens