Adding AC to existing NG furnace… upgrade to full electric?

A neighbor with an older house is pricing out installation of an A-coil air conditioner to her existing gas furnace and ductwork.  Contractor is spec’ing a run-of-the mill Rheem unit. … A neighbor with an older house is pricing out installation of an A-coil air conditioner to her existing gas furnace and ductwork.  Contractor is spec’ing a run-of-the mill Rheem unit. …Read MoreGreenBuildingAdvisor