Me - over about 32 degrees. DH - humid days over about 27 degrees. I have it set to 27 or 28 degrees, DH sets it to 24 & I have to put a cardiagan on! Except on the hottest nights if DH has the a/c on in the bedroom I sleep in DS's room - I'd rather be warm sleeping rather than cold especially at the moment as I have a cold and the cold a/c makes my sinuses hurt. I'm a tight @rse too so I'd rather not have it on - I turn it on more for DS than me.