tarry goo in bottom of air conditioner housing?

Do you think it is to prevent rusting of the ductwork?

Are you sure it isn't black mold?

Because that's the stuff in my A/C. I remember what it was like when it was new. Now it's got black goo in it--mold that needs to be cleaned.

-- Steven L.

It looks like it is to build the bottom of it up to the level of the drain outlet, and also to prevent rusting.

The reason that I was asking was that it was shrunken and broken, and when I vacuumed all the debris out of there (reason I was in there in the first place was because the A-coil was dirty, and also there appeared to be some rust on the brackets because of a slow drain) some of the chunks came up. For lack of any better ideas, I "glued" the pieces back together with roofing tar, and used more tar to fill in the cracks and level the surface so all the condensate could run off properly. I just finished this up maybe half an hour ago, is nice to have functional A/C again (and hopefully cleaning the A-coil will allow the furnace to cycle properly. If not, I will have more work to do.)

nate

Not unless mold is hard, and a half inch thick :)

nate