tucson: Is it as "simple" as removing all of the evap's hardware and then having an a/c unit installed? Can you use the existing ducting or must you update it too? With some general knowledge of home electricity and wiring is this something I may be able to do myself? Thanks for answering!|||First, check your existing ductwork. If it's insulated you can use it for A/C. You will have to install at least one return air vent and can use flex duct for that. Run it to where the new unit will be located. Now, I wouldn't try to do the actual install myself for a couple of reasons. First, a home size a/c unit will require 240 vac electricity and that may have to be run from your panel, or a sub panel may have to be installed. Second, no matter which a/c unit you purchase, it will have a warranty which the manufacturer could try to weasel out of if you self install it. Unless the unit is self contained it will require copper run from the compressor to the air handler and unless you're a pro you can't buy the coolant gas to charge the unit. Third, if there's a fire or other damage resulting from the wiring or install of the new unit your insurance company may not cover the damages if the work wasn't done or at least signed off on by a licensed professional.|||An evaporitive cooler or "swampy" as we call them cannot be turned into an a/c unit. Typically you can duct a package a/c unit into the swampy's duct system but since swampies don't have a return duct that would need to be run into the house. It is not really a job for the DIYer as duct, electrical and control wiring would need added.