I am building a new house which is a total of 3 stories -- upstairs bedroom areas, main living area, and a daylight basement.
My house plan calls for 2 furnaces, and I am planning on installing one AC unit.
I'm wondering about the best way to zone the furnaces. Should I set one up to run the top two floors with the AC, and the bottom floor on it's own furnace? Or runt the bottom two floors off of the same furnace?
Any suggestions would be appreciated.