If your air conditioner stops working and your trusted HVAC contractor comes out and troubleshoots only to tell you that your compress is shot, you may want to seriously consider purchasing an entirely new system. The cost to replace a compressor ranges between $2,000 all the way up to $3,000. That can be over half the cost of a new, upgrade system that will end up being more efficient and a money saver.
You can find that the cost for the compressor itself can still be covered under your warranty, as long as you have stayed up to date with the annual preventative maintenance and it is not void. But you will find that you yourself are still responsible for the labor to replace it, which can be $1,500 or more. If this happens to you, sit down and consider your options with your spouse and trusted professional. Figure out what the best decision is for you, and if needed, get a second opinion.