I had a friend tell me that running the A/C a lot will make the inside of the windshield dirty faster.?

Any truth to this theory? It's almost like thin streaks of some substance - it looks like permanent fog almost.

I had a friend tell me that running the A/C a lot will make the inside of the windshield dirty faster.?
Running the A/C will NOT dirty your Windshield at all. It is not possible for the air coming out ot the A/C vent to dirty a windsheild.





But under certain weather conditions a thin layer of moisture can form inside the windsheild. This is certainly not dirt but water.





This also can happen when the AC is not working properly. If the problem persists better to get your AC checked or serviced by a qualified technician.
Reply:Not if you keep the outside air filter clean, or have same replaced as recommended by mfg.
Reply:The cold air coming out of the defrost vents will chill the glass through to the outside and this is what causes condensation on the outside of the windshield and it seems to get frosty on the outside. Sliding the temp lever over slightly while using the defrost feature will usually keep this from happening.
Reply:wtf? running the A/C kills your gas millage.. dont know about the dirt or frost thing
Reply:false! running a/c actually cleans the air as it runs...this film on windshiels probably is possible heater core leak...antifreeze! does it have a sweet smell? or more of a odour?...it can also actually be frost build-up if the evapourator temp. sensor is not working properly! is this a chrysler vehicle?

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