Hi, we just had one installed a few weeks ago... the installer said auto was the least cost effective mode to run. He suggested turning the unit off for 30 mins or so each day if running 24/7 so you dump old water and it refills with fresh cooler water and just running on manual and cool.
the first day we had it, it was 39 in melb but quite humid, i ran it on full with two windows open and it was 24 inside. last week it was close to 40 here and a dry heat, i ran it at half fan and it was 21 inside all day with two windows and the back door open a crack. how many windows do you have open?
i love the evap!
I'm sure he is wrong as all new systems should automatically dump water a few times a day.
OP my place has been 27 when outside is 41. I haven't actually felt the heat so far it has been rather pleasant in the house. Make sure you have enough windows open as well as air circulation is a huge part of evaps working well. I run mine on manual and have it on about 5 bars at the hottest times and down to 2 overnight with the timer set to turn off about 2am. I haven't been putting it on in the morning until about 9am.
Edited by Kafkaesque, 31 December 2012 - 09:15 PM.