I just got a $190 bill for a 1 bedroom. I am in one of the newish buildings downtown, the ones with the PTAC units. This year, I decided not use the PTAC in the bedroom and decided to get one of those oil filled radiant heater. Did it mainly because I didn't want like the noise. Also, I am on the first floor and my ceilings are 12ft so, the warm air from the PTAC just goes up. I have the radiant heater on all the time, but even before that it was normal to get bills over$150 during the winter months.