My handyman installed the units, ran the pipes and the electricity. ElectroVenta then did the final hookup and test. There is also Refrigeracion Real, on the carretera north side at the Chapala end of Riberas that was willing to do it.
I initially asked Electroventa for a price on a complete package, as per recommendations here, but when I saw the units on sale at Walmart for $3000, I knew it would be hard to find a better deal, so I went that way.
I installed the outside unit on the roof, within the enclosure that already hides my tinaco and satellite dish, so the noise is not likely to bother anyone.
Pete