Squeak
Member
I have recently started hearing a new banging sound coming from my tankless water heater, mostly when toilets stop filling, and when my wife is quick to turn off and on the kitchen faucet.
Unfortunately, the heater is right under our master bedroom, so in the mornings, the banging sounds wake me up (poor me! )
My son and I went exploring tonight to try and see if we can figure it out, and we can hear the sounds best coming from inside the tankless heater. I took off the cover and took the video below.
My son is at the basement sink, and turning on the cold water quickly, and then shutting it off quickly (which causes the bang and echo).
I also know that it happens inside the heater because when I shutoff the cold water isolation valve at the heater, the noise stops almost 100% (you can hear real faint, but nothing like this). Odd enough, shutting off a 1/4 turn valve I have earlier in the cold water line right before the check valve did not stop it.
I tried putting on one of the AA sized water arrestors right where the basement sink connects in to see if it was a water hammer, but that did not change it at all.
Is this a classic water hammer issue, and by putting a on a larger whole house water arrestor (like from Sharkbite), it will solve it?
Tankless is on the last stop of the cold water run for the house, if that helps at all.
Unfortunately, the heater is right under our master bedroom, so in the mornings, the banging sounds wake me up (poor me! )
My son and I went exploring tonight to try and see if we can figure it out, and we can hear the sounds best coming from inside the tankless heater. I took off the cover and took the video below.
My son is at the basement sink, and turning on the cold water quickly, and then shutting it off quickly (which causes the bang and echo).
I also know that it happens inside the heater because when I shutoff the cold water isolation valve at the heater, the noise stops almost 100% (you can hear real faint, but nothing like this). Odd enough, shutting off a 1/4 turn valve I have earlier in the cold water line right before the check valve did not stop it.
I tried putting on one of the AA sized water arrestors right where the basement sink connects in to see if it was a water hammer, but that did not change it at all.
Is this a classic water hammer issue, and by putting a on a larger whole house water arrestor (like from Sharkbite), it will solve it?
Tankless is on the last stop of the cold water run for the house, if that helps at all.