How do you install hot return line for the furthest bath room in the house.
It not spouse to be a direct hot water line going to the tub.

Thank you

If you're referring to the installation of a recirculating pump, then there may be an easier way than retrofitting a return line: there are companies that make a recirc pump that goes under the bathroom sink and connects to the sink's stop valves, eliminating the need for a dedicated return line (since it uses the sink's supply line instead). Post back if you want more info.

Moishe

I meant when I do repiping to copper, how can I run hot return line to the furthers bath room.