So I opened youtube and there was an intro on how to clean your air conditioner like a pro. ???? I clean leaves and debris from ours, make sure no one is building nests or webs and move on. But there is a spray container of 'fin clean' or something like that that I should have been using? I didn't know that I was supposed to WASH my air conditioner! The thing is 40 years old! I am afraid if I wash it, it will die and it will be my fault!