[andyg]

Thanks Dave. You are correct about the inverter units and I would probably spend more to get one. I use my rig to travel to antique steam and farm equipment shows where power availability is a problem. The low amperage needs of the inverter type could mean the difference between having AC and not having it. You also make good points about the installation. Dad is converting a 45' Prevost right now and he is using minisplits in it and we have been paying special attention to these things. Dad was also a refrigeration guy in a previous life so his experience is very helpful. My little 12' box should only need one indoor zone and I think 9000BTU should do it.