I found this old 3 ton tappon with the fan on the bottom today. What a mess!! It had a wire shield over the coil and the dog (big dog) had been sleeping on top of the thing. All the fins were flat. I messed with it about 10 minutes and told the lady to call someone else with better equipment and more time than I had (no charge). I usually only do basic repairs so it was not on my agenda anyway. Sometimes its nice to just walk away!!! Only thing about it bad was there were 2 kids there and they had been without air for a month. Said they didn't have enough money for a big boy company. Im a one man deal with a full time regular job so I stay within my limits.