under hood of car on fire wall under ac box is a drain tube clean it out
You can remove it and clean the filter inside it or you can replace it.
How much does a company charges to clean a condenser and evaporator coil
Cleaning the evaporator isn't a regular maintenance item. They're mounted inside a sealed case, and in most cases you have to remove the dash to access it. Sometimes evaporators leak, preventing the AC from working and need to be replaced, but there's really no benefit to cleaning an evaporator on a car.
It is likely germs and fungus in the air conditioner. You can use a spray product to clean it. If the evaporator is leaking you will get a very bad order. You will also start loosing your freon, then no a/c.
It should be between $500-$750 to properly clean an evaporator coil.
how to clean evaporator on 1997 chevy 1500
wher is the a/c evaporator drain hose located
look outside where the drain for the ac is and run a coat janger in there to clean it out.
Vacuum
I would remove parts until the evaporator is exposed then blow it out and/or vacuum it out then spray it down with Lysol.
You should clean both the evaporator and the condenser. To the clean the evaporator: remove the foil wrapped insulator, behind that remove the screws from the access plate, clean entire side of evaporator and the tray beneath with a stiff brush, pour one teaspoon of blean into weep hole in the tray, replace equipment. To clean the condenser: clean condenser with commercial coil cleanser, clean fins with a soft brush carefully, check pad on which the condenser rests to make sure it is level.
You can spray a little 409 on the coils, let it sit for 15 to 20 minutes and simply rinse it down from top to bottom. Also rinse it from inside out.