Excellent first purchase .Having been bewildered by contrasting reviews re these machines in general either "great" or "rubbish" I phoned Cooleasy & received sound ,honest opinion from Jonathan ,that confirmed my thoughts ie. (1)These are NOT air conditioners with far greater initial cost ,runningcost ,condensation pipe plumbing etc., & DONT claim to be (2) But this Air cooling fan does have an excellent list of features compared to others I looked at including its cooling evaporating set up . Think of hot/dry day at beach then contrast body surface cooling effect when breeze evaporates that water .This is how this differs from a plain fan or condensing air So yes it will cool air in line with cold water in sump evaporating into room .It therefore helps increase humidity on dry days . Activated 2yr Guarantee on line which was also reassuring . If had to find fault then they could include a couple of "freezer blocks" but most of us have a few lying about ! Hope this helps anyone having the same questions .