![plumbing - Why does shutting off cold water valve to the water heater shut down cold water in entire house? - Home Improvement Stack Exchange plumbing - Why does shutting off cold water valve to the water heater shut down cold water in entire house? - Home Improvement Stack Exchange](https://i.stack.imgur.com/0NhGR.jpg)
plumbing - Why does shutting off cold water valve to the water heater shut down cold water in entire house? - Home Improvement Stack Exchange
![plumbing - Why does shutting off cold water valve to the water heater shut down cold water in entire house? - Home Improvement Stack Exchange plumbing - Why does shutting off cold water valve to the water heater shut down cold water in entire house? - Home Improvement Stack Exchange](https://i.stack.imgur.com/5klo9.jpg)
plumbing - Why does shutting off cold water valve to the water heater shut down cold water in entire house? - Home Improvement Stack Exchange
![My hot and cold water are connected in the output of my water heater - Home Improvement Stack Exchange My hot and cold water are connected in the output of my water heater - Home Improvement Stack Exchange](https://i.stack.imgur.com/vW4zG.png)
My hot and cold water are connected in the output of my water heater - Home Improvement Stack Exchange
![Very hot water in cold lines, mainly in master bath furthest down the line. Hot water heater seems to be leaking backwards into cold supply line. Any ideas on how to fix Very hot water in cold lines, mainly in master bath furthest down the line. Hot water heater seems to be leaking backwards into cold supply line. Any ideas on how to fix](https://i.redd.it/up98m7o7nmd51.jpg)