That s a vital start but it won t make for effective heating in the basement.
Moving ductwork from basement to attic.
It s one thing to blow warm air into a room but cooler air needs to be allowed out of the to make room for the warm stuff.
A drop ceiling could be fasten right below the duct work and that is about as much height as you could get.
That drop sill might make it impossible.
Is the duct work up aganist the floor joist.
You ll also need to provide a return path from a basement air handler or main level return to the second floor.
Drop sill would be hard to raise.
We went through and moved the ducts over to the edges of the basement since they tended to run right down the middle of the basement ceiling.
I d definitely bring the heat ducts down to the floor.
All the duct work could be moved to one side of the basement possibly call someone and let him look at it.
You ll need to find a corner such as in a closet to build a duct chase to get ducts from basement to attic.
Draw a floor plan of your home including the location of the hvac air handling unit the existing ducts sprouting from it and the room or rooms in your basement where you would like to place new.