Instant-On Hot Water At The Tap
My shower is right next to my hot water heater so it provides instant hot water once the tank is warm.
My galley sink is wasteful of water because it takes a while for the hot water to displace all the cool water in the long run if tubing.
I was thinking about getting another pump and a few check valves and making a loop on a timer to run the hot water around for 30-40 seconds before turning on the faucet, that way I don't waste clean water and fill up my too small grey water tank too quickly. I could insulate the lines while I was at it.
Has anyone else done this?