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Noticed the shutoff going into my tankless water heater was off the other day, BUT I still had hot water throughout the house for weeks! I have a Navien tankless water heater and use the built in recirculation pump with a two branch dedicated return recirculation system. I can't see how the...

Built a new home recently and my wife had to have a pot filler mounted behind the stove. All was well until Christmas dinner was being cooked with pots boiling all day on the cooktop. The pot filler faucet sprung a leak after one of the elbows physically separated - apparently due to pressure...

I recently built a new home. I have a Riobel thermostatic shower valve and a Navien tankless with external recirculation. The shower valve regularly makes a buzzing noise when off - especially after a hot water faucet has been turned on and then off. I'm wondering if the recirculation system...