Well, it got to be in the 90s a few weeks ago in Chicagoland, and my air conditioner froze. Specifically, the A-frame evaporater unit turned into a block of ice preventing air flow, and thus, preventing cooling. A/c guys come out and proclaim that the evaporator leaks, lost freon and thats why it froze. Cost to replace? $1000! I called a few other shops and asked for prices and they were a grand too. I am in the wrong business!

Also, they really wanted me to go ahead and spend $3000 to just replace the whole ac unit since the current one was from 1992. That is a lot of money to me right now. I really don't have it in my budget.
Pros: New A/C is far more efficient, and brand new.
Cons: $3000 vs $1000 to repair old one. Repaired unit may still fail for some other reason later.

What would you do? I am leaning toward the repair rather than the replacement for this summer's budget reasons.