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The REAL reason (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by MikeC on October 07, 2001 at 19:17:10:

In Reply to: Those are for fresh air and AC only. MORE posted by Tim In PA on October 07, 2001 at 12:38:05:

BMW was WAY behind the rest of the industry concerning integration of the heating and AC systems that they are not connected. Thats why BMW has two blowers and a seperate AC switch.

Its a sucky system, but thats it if you like the handling.

MikeC
There is a good reason for this. If you are running heat, it is nice to be able to bring in fresh cold air. The reason is to minimize fatigue. The Euro owners manual (UK) describes this much better as to WHY it is this way.




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