Sonam,
 
Hi, I live in Ottawa, Ontario, and we get some pretty humid summers.  I
don't know how to convert, or what exactly the temperature limit is - but
here the vet said 75 degrees - celcius or farenheit - I really don't know,
but I imagine you can figure that out!!!
 
I have 2 window air conditioners - one in the ferrets room and one in the
living room - their main play area.  I leave the one in the ferrets room on
all the time - 24-7.  Becasue it is the only window in that room, if I shut
if off, they get no air.  The one in the living room is only on when I am
home in the evenings and on weekends.  Naturally, if it is nice out, I will
open the other windows and get a good breeze in the apartment - nothing
like fresh air !!!
 
FANS - they DO NOT cool ferrets off - all it does is circulate the warm
air.  Don't forget ferrets can't sweat, so their is no sweat on their
bodies for the fan to cool down.  I am not sure exactly how it works, but
I am sure someone on the list could explain to you.
 
Other methods that I have read about are plastic pop containers filled with
water, frozen and then wrapped in a sock and put in with the fuzzies -
helps keep them cool.  I am not really sure about other methods - once I
found out that they could die from heat, I went out and bought an
air-conditioner for their room.  The one for the living room didn't come
until the next summer!!!  - the one for me mostly!!  I still sleep in the
humid heat at night, but I have been known to crawl in the enclosures with
the fuzzies on really hot nights and sleep with them (certainly not a
restful sleep let me tell you - poor fuzzies, trying to figure out what
the hell their human is doing iin their bed with them???  especially when
I don't let them sleep in mine with me!)
 
Good luck, and I am sure you will get lots of posts to help you out,
 
Marion
[Posted in FML issue 3019]