Repurpose abandoned ductwork?

About 18 months ago I finally installed a couple of ductless minisplits in my ~1600sf single story house.  The furnace and ductwork were located in an unconditioned attic.  Is there… About 18 months ago I finally installed a couple of ductless minisplits in my ~1600sf single story house.  The furnace and ductwork were located in an unconditioned attic.  Is there…Read MoreGreenBuildingAdvisor