Hey! It seems like it may be something with coil. You'd better call to some repairing service. Last summer I used my AC and then It suddenly had broken I tried to repair it by myself but nothing came out. Then I called fonko company and they repaired...
Hey! I had the same situation recently, I had no idea what to buy and what would be better for my paticular house but I concacted with ***Link Removed*** and they helped me. They can also install AC in your house