You'll notice that the plugs are of a different prong configuration. This is done so that you don't plug the incorrect rated item into the circuit. If your going to change anything, change the receptacle and breaker. However, what you propose will work without damaging the compressor UNTIL something goes wrong with the compressor that causes it to draw more than 15amps. When this occurs, the breaker will not trip and it will fry the compressor.