I hope you didn't lose any close friends since the answer can be YES or NO as stated by Smkettner. The variables are what size AC unit and it's amperage draw, the rated amperage of the household outlet to be used, and the length and gauge of the cord you intend to use. The best way to eliminate any safety and/or equipment failure issues is to have a dedicated 30 amp outlet installed where you can use your rig's shore power cord, especially if you plan to do this often. I have plugged my high efficiency 13.5K AC (draws just under 10 amps) unit into a 15 amp household outlet and it ran fine but voltage dropped to 108 VAC which is close enough for me to not want to do this often or for any extended length of time. Voltage drop would have been less significant if I was using our rig's shore power but it doesn't reach thereby requiring the use of a 50' extension cord. If your rig has an onboard generator it can be used for this purpose, plus it will give the genny some exercise.
