im possibly doing a new house in pa in the fall.the homeowner is asking for price on 1 zone propane and 2 zone propane heating system.im assuming their is no natural gas in the area.oil/propane only.my question is is it ok for propane converted furnace in the attic area?and the other in the basement?maybe 1 zone oil located in the basement is the way.thanks for any thoughts on the subject.