Laing Thermotech Autocirc Undersink Instant Hot Water Circulating System "making bubbleing sound air" Questions

making a loud knocking sound. This problem only developed after four years of trouble-free operation. Clean out check valve with CLR calcium-lime-rust and see if functionality is restored. Problem can

How to regain lost water pressure after replacing hot water heater anode? Made a mistake when beginning project of replacing anode, as we started by forgetting to turn off cold water going in to ...

...sound. There is sediment on the bottom of the tank. How do we drain it and get rid of the sediment? You can try to flush the sediment with the water and power on. Just hook a short hose to the drain ...