I have had to replace these a/c's for the same reason! the last one I had repaired didn't last through the season. I have always bought the a/c from the supply house and with the help of a friend replaced it myself. only 4 bolts and a few wires. last one I bought was just over $500.00 i'm sure they've went up but $1200. sounds like a lot of money. if you do change it yourself be sure to replace the gasket. and welcome to the forum:welcome: