Replacing furnace and not HVAC?
Would there be any problems replacing a furnace but not the A/C? I'm remodeling my house and I'm thinking about moving the furnace into the attic, but I'm told that the existing one (currently in a hallway closet), will need to be replaced. The A/C condensing unit was located on the roof previously, but will get moved to the sideyard. Is there anything in particular that I'll need to be aware of when mixing a new and old system?
Thanks for the advice!