Does anyone know of a cheap company that can work on a central air unit? We think it needs Freon. We have it set on 73 but it shows it is 81 in the house. We cannot afford a lot to have it fixed and most want money just to look at it. If someone could look at it and let us know what it needs without charging us we would be able to save the money out of our SSI checks to have it worked on if we need to. Please PM me.