Where are these humidity settings made? This is my first summer with my Envision system and I'm not happy with the humidity levels that my Honeywell thermostat shows. After reading this thread I have now changed the fan setting from ON to AUTO (a little more than an hour ago) so I'll see how much that helps. How many days should that take to level out? We have been freezing at night as the system keeps running down to about 3 to 5 degrees below where it is set (78F). I'm assuming it is because the humidity levels are still high (up to mid 60% in the day and in the mid 50% at night - it is set to 45%) and the system is trying to get it down to our setting. In the daytime we can feel the high humidity levels but at night we just freeze. Anyway, Hunter said that he had his dip switch set for dehumidify. I've looked at several of the PDF's and the closest I can find is IM1585 which shows DIP settings for various models as well as a table for Operation Logic Data which references ECM2 Dehumidify. I think I'm close here but could use some help in obtaining the correct understanding on first, how to determine what setting my system is currently at, and second (if necessary) what DIP setting I need to reduce my fan speed to 85%. One more question on this subject. Several posts mentioned that the 85% setting only occurs during cooling and not during heating. Can anyone reference some documentation that verifies that? By the way, my system was installed in November, replacing an air source heat pump. I was very pleased with operation and kwh usage this last winter (based on outside monthly average mean temperatures as compared to previous years). Several of the bidding contractors told me that the first year is not as good as subsequent years because the complete cycle of storing heat in the ground takes at least a year. If that's true (and we can resolve this summer humidity issue) then I'm a happy camper!