I have roughed in Space Pac 3" tubes to air condition my house. Do I have to use Space pac's evaporator? What are the options? I am going to power this with a GSHP.
Has any one ever used a buffer tank after the GSHP in a heating application? Another site talked about this, but never fully explained it. How would one calculate the size of the tank?
Any recommended GSHP which would provide heat AC and DHW and have a Copper/nickle exchanger?