When the ac is turned on only the fan is blowing - there is no cold air coming out of the vent you tried turning the ac power breakers off and on thanks?

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Chances are the compressor is not running. It could be a number of causes:
  • Compressor is not getting power due to a bad connection
  • Some AC units have a fan only setting. The switch may have failed and it is stuck in fan mode
  • The compressor is toasted.
  • There is a coolant leak and the compressor has shut off to protect itself.
You can check for electrical problems yourself, if you are comfterable with electical systems it could be an easy fix. If you do track it down to the compressor, you may want to call a professional. Modern compressors are usually sealed & soldered in. Probably nut much fun to fix...
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