Rich - yeap i left it on all night did get a bit cold actually - havnt used the sleep function is supposed to increase temp by a degree every hour for tow hours or something like that.
Went to three different B&Qs all sold out of the 12000BTU but one of them had all the delonghi range in stock probably all gone now though
Dave - B&Q website still had them yesterday i had to order another one for my dads mate :winky: