We have a 500 sq.ft room with an old White-Westinghouse wall AC. Not sure how old the AC is, probably 15 years? It doesn't cool the room. Given that it's about 6 ft high up on the wall and it's heavy, wondering what would be the most economical way to cool the room. Options we are considering: 1. Repair the air conditioner ourselves. We'll have someone come by to help us with the lifting. 2. Call a professional to repair the air conditioner. How expensive can it get? 3. Replacing the air conditioner all together would be the last option as it's around $500 for a 12000 BTU AC + installation. What do you experts say?

Hi all. My mother is having a problem with her central AC unit. The lines coming from out of the house into the outside unit are icing up and there is no cold air flow. The unit is very old (approx. 25 yrs.). Technician came and filled refrigerant and that worked for about 2 days. Another tech came back and told her that some sort of valve was leaking and it would cost ~$1000.00 to fix. Does this sound kosher to all you experts out there. I know nothing about these AC units and could really use some advice. Thanks in advance.