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Here is what I am thinking. Since sending water mist into the condencer coil is not a great idea (scale build up) it would require a tunnel to give the water time to fully evaporate. That would work great in NM. It would still be kind of bulky. As an alternative I was considering placing a mini swamp cooler forward of the condencer air stream. This would even work some what in humid climates, it wouldn't be highly effective but it would be a better option than water mist that would likely leave scale build up on the condencer.
Plus the swamp cooler rig could use waste water off the evaporator.
It would be cheaper than a geothermal unit and work on an existing house A/C unit.
I have seen little wind units that use condesate to help cool the condencer but they are still not very efficient. Its so dry in NM that there will never be enough water coming off the evaporator to give the condencer a steady supply of water.
I have seen a few very small almost like a personal swamp cooler for sale in northern tool or tractor supply. They would make a good starting point since they would have the water level control, pump and wetted media all rolled into one package.
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