S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Any ideas why my A/C smells like mildew when it's in econ mode, but not A/C mode?

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Old Jul 13, 2001 | 09:35 PM
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George Burdell's Avatar
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Default Any ideas why my A/C smells like mildew when it's in econ mode, but not A/C mode?

Could it be the filter? Anyone else have the problem? It didn't used to do this. Not to mention I live in TX so it would get dried out pretty quick if it was some condensation.
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Old Jul 13, 2001 | 09:47 PM
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Default Because the element is warmer than when the air is "on." The cold of having the air on masks the

mildewy smell that is always there. Kind of like how bad meat smells fine when its frozen, but smells worse and worse as it warms up. Just a guess.
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Old Jul 13, 2001 | 11:57 PM
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Default Re: Any ideas why my A/C smells like mildew when it's in econ mode, but not A/C mode?

.<ul><li><a href="https://forums.audiworld.com/a4/msgs/654521.phtml">https://forums.audiworld.com/a4/msgs/654521.phtml</a</li></ul>
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Old Jul 14, 2001 | 06:01 AM
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A/C removes moisture, which is usually what carries the odor
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Old Jul 14, 2001 | 09:54 PM
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It removes it via the evap. core.Moisture gets traped int the fins of the core and mildew can result
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