This is mold and mildew growing inn the vents, firstly you need to ensure that the A/C drains are clear and running free, then there is a commercial disinfectant that you can used designed for the A/C system to combat this problem, check your local parts store, they should carry it.
May, 6, 2010 AT 11:20 PM
Or get some Listerine and spray a generous amount in each intake. It kills the mildew and the funky smell. Use the old school yellow stuff, the kind without any sugar in it.
May, 7, 2010 AT 1:33 AM
Listerine? Good idea Doc. Cheaper and just as good.