hi,
i live in india, and i would really need to look up how your humidifier works.. but i can tell you how people in the desert areas keep cool…
they have made a panel of jute strings – tied loosely on a wooden frame. amd one end of it is dipped in water. a fan is placed behind it – bringing in humdity as well as cool air to the room. you can modify the same for yourself.. i dunno how much jute strings will cost in your area.. in india.. its dirt cheap…
best of luck