[Shop-talk] was tankless/instant water heater now slow hot water to fixture

[David Scheidt]

> On Jan 26, 2022, at 09:37, Bob Spidell <bspidell at comcast.net> wrote:
> 
> Got a question: Where does the (heating) water being shunted from the hot water line to the cold water line by a pump go?

The water the pump pushes back into the cold is taken from the water heater. The water heater draws replacement water from the cold supply, which is replaced with the water the pump is pumping.