Seriously, when can we put on the heat? Does it make me a wimp that I want to put it on now? Is there are rule about the date, or temp when it is ok to put the heat on...or is is just till you break down, can't take the cold any longer and go for that switch? My general rule of thumb is if michelle can do it (my cousin who lives downstairs) we can do it. Any ideas on how you make the decision for that first flip of the switch?