Install Lennox 3 ton Elite condenser to matchup with existing down flow furnace and coil. Enlarge downstairs return air to an 18†duct and a 14†X 30†High Flow grill. You might want to use a plenum on top of the furnace to help quiet return air noise. Run 220V circuit to the new condenser. Run refrigeration lines from evaporative coil to the condenser. Install a 2 ton Lennox ductless Heat Pump mini-split system. Place heat pump on the flat roof above the laundry room. Run 220V circuit under the house and run up the wall in the laundry room, (there’s a Sheetrock patch already there) to the flat roof. Place the 2 ton ducted air handler in the attic upstairs and run 3 supply ducts to registers in the two bedrooms and the bathroom. Cut in new return air High Flow grill in the upstairs hallway. Build working platform in the attic and install a light and switch. Installation includes: All Comfort Guarantees, Installation by Huft Journeyman employees, all material, labor