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Originally Posted by MaestroAl
Air conditioning is important for the car - it controls humidity as well as temperature and you should always have air-con switched to "on", even when you're heating the air. Air-con != cold air.
BMW spend millions developing clever climate control systems, to turn them off is just churlish  |
Correct. Actually while picking my car at the Welt a month ago, the rep told me never to turn it in off.