"I had the thought of installing a home window air condioner in the cargo bulkhead of my van exhausting warm air into the cab. I would crack the windows as i do now when running the maxxfan. i know there will be moisture coming from the unit but it might be worth a try. Will use 110ac shore power."
That is ingenious, with 1.5 inches of gap on each window and I am assuming the maxfan is in the non-air-conditioned section, that will work great. You will get plenty of fresh air for the condenser circuit. Great idea sir!!! OK, now for the slinger ring on the condenser fan, on humid days it will be a problem, you will be slinging condensate spray on your dash, so do this, make note of where the compressor discharge copper tubing is laying in the condenser side pan so you don't damage it, drill a 1/4' hole and let the condensate drip into a bucket. I personally would epoxy a barbed 1/4" hose fitting to the pan and run Tygon tubing to a Tide jug. (Note: If you drill this hole, place a piece of tubing over the drill bit only leaving a 1/4" of bit exposed, now when you break through, you do not shoot up 3" into the unit and damage something.)