My question is the same as the title.

I find that sometime my car just can not remove the moisture/fog in winter even if I am using the hottest temperature and fastest fan speed blowing on the window only. When the car is stopping for a light, it even worst. I have to wipe the window with my hand and look stupid.

I am wondering if that happen to you guys either? It happen only sometimes, that is why I don't get the reason for that. It happened again last week when there was a heavy rain with low temperature outside. It is not cold like winter, but it also happen, and I see other cars on the street do not have the same problem as I do.

How do you guys solve this?

 

a/c

 

yes, some one said use a/c, too, but I am not sure when. I think it works during car wash only when the outside is hot.

 

Have you tried anti-fog product rainX makes some

 

Use ac anytime the defrosters are on, it will pull all the moisture out of the air inside the car. Works even when the heat is on. We use this at work to help dry out carpets after cleaning them.

 

Since you posted this in the Evo X section, you must have a X? Just leave the hvac on auto and it will take care of the problem. This will run the a/c when needed to remove the moisture from the air.