I was researching how to harvest condensate from HVAC and found your discussion. I continued to search and found some of the same articles mentioned in the discussion. I found the following article below from BuildingGreen.com and thought you might be interested. It talks specifically about air-conditioner condensate in more detail. I hope this helps. Let me know if you find anymore information about collecting condensate. I would like to calculate the amount of condensate that can be harvested on a monthly basis so I can add it to my collection tank calculations. Good Luck
http://www.buildinggreen.com/auth/article.cfm/ID/3903/
