After doing some research on the internet yesterday, I went home and removed the cover to expose the drip pan and coils. Interesting... the coils are slanting down into a two inch drip pan. Seems like a bad design to me. Anyway I noticed about 4 inches of water in the bottom of the unit and a slight line of demarkation of water going across the middle of the coils. Lots of mold, dirt, etc. After scooping out the water and drying the floor up I checked to make sure the pump was working by pouring water in the pan (it streamed out perfectly). I then sprayed the coils with a solution of bleach and water and straightened some of the coils with a toothpick. The water that I was spraying soon began to stream down the coils like it should (how EXCITING!)
I changed the filter and started the a/c and fan.... the air seemed so much cooler (maybe my imagination). Anyway, this morning the towel I had place next to the unit was wet again. However, I wonder if maybe that's from the other big tin thing that sits next to the unit I cleaned last night (I guess where the air comes back down into the unit). I couldn't clean the water than got into that so maybe it coming from there. I'll check when I get home tonight... let's hope.
I'm also calling today and setting up an appointment to have the ducts cleaned and SOON! I wonder if that's why my house is so dusty. We'll see.
Next step... figure out what kind of heat I want. You guys have just about convinced me that a heat pump can be efficient if it's working properly. I have a fireplace... maybe I should consider a wood stove?