After traveling around the south during the summer it was becoming a burden on the bride during set up. The unit would take a long time to cool down. I added a 15,000 btu with heat strip unit to our 25WB Work and Play. Only a 30 amp trailer but I had 3 different vent openings to choose from. I installed a 15K unit with heat strip right next to the ducted unit. I ran a 25’ #10 gauge across to a microwave cabinet, then forward to the fridge then down and exit into a male extension cord plug. Upon arrival, Ma stays in the truck while I hook up the 30 amp powering the OEM unit and a #10 25’ cord into the pedestal 20 amp. After about 10 minutes, the temperature has dropped at least 10 degrees. This is the second 30 amp camper I have installed a 2nd a/c unit.