Originally Posted by ben47
Don't forget to cycle the A/C for 10-15 minutes even if the car is being driven during the winter. It "used" to be recommend doing that for the same reasons you cited on the other systems. Haven't heard/seen anything on it for a long time, but I still do it... it can't hurt anything.
Excellent point. I don't know if its really necessary or not but I still do it too. In the long run it doesn't hurt anything and could potentially save you a lot of $$$ after that first hot day in May or June.