Thinking about adding a 2nd AC

I added a second unit to mine and it was very easy as others have said. Mine was not prewired and I have a 30 amp unit so I ran a wire to the front compartment, installed a dual breaker box and from that box installed a 20 amp plug on the side. I then plug into the 20 amp receptacle on the pedestal. That way I can run both air conditioners and the microwave without tripping the 30 amp breaker. While I was at it I ran another line from the new breaker box inside and added another receptacle so I can run a second electrical heater in the winter again without tripping any breakers.