The dealer sells an evaporator kit thats easy to use that gets rid of the mildew smell// i found a easy way of doing it.. Just spray it into the drain tube under neath your car and it will clean out the evaporator// and also replacing the in cabin air filter adn spraying the filter with some scented
ozuim spray sanitizer helps alot////then the wife/girlfriend or peeps
in general are going to say"damn you car smells good!!!"

 

I'm glad everyone one here failed to answer the OPs question about the direction of the air filter... UP OR DOWN arrows folks... FOCUS.

 

Why would you revive this thread? The answer was given the following post after the OP's and he acknowledged that.

 

Pretty simple replacement. Well worth it. Mine was so nasty. I breathe easy now.