how can I grt the sq. footage heated and total
Unfortunately it will only calculate the area by the Location (Ground Floor/ Second etc). Tools / Calculate/Estimate / Area/Perimeter.
If you want to calculate by room the only "Automatic" way I can think of is to make a new location for the purpose and just trace the room you want to measure with another wall and then have a look at the calculation. You would then have to drag the walls to line up with the next room and get the calcualtion again. Bit of a painful process!
I think a request has already been put in for this to be added.
Allan