Scottbee
Member
We have 2 water heaters 50 gallons each with a small pump that keeps the hot water circulating and the all of it is located on the first floor in the garage. We live primarily on the second floor and when taking a shower or filling the garden tub the hot water goes away no matter how far you rotate the handle. To get it back you can turn on the hot water on one of the sinks a quarter turn and the hot water in the tub or shower comes back. What is causing this to happen? Both water heaters are working fine and there is more than enough hot water. But the sink runs cold even though the hot is turned on. Any help will be appreciated.