I wonder, if you compress air it can remove the moisture from it substantially - it that were passed to a cooler, then it might clean up the act quite a bit - running low diameter (even braided) air hose around the house is not such a nightmare as other utilities ducts, tubes or cables can be. You could then site a cooler locally in any room you felt you wanted one, like with a fan heater for example. Only one compressor and a tank to deal with on a "sound issue" basis too. Given it's under pressure then the need for a fan is somewhat reduced too. The requirement for an "efficient" compressor would be prime though. Maybe you could cool the air before distributing it round the house, but this would make the pipe requirement a good bit dearer I'd guess.
Take Care, Gnube I don't want to win the lottery I just want to win a barn full of seasoned timber! ;O)