Brand new home --whenever we turn on a hot water faucet we here loud knocking in our pipes---

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Originally Posted by steve connolly

brand new home --whenever we turn on a hot water faucet we here loud knocking in our pipes---

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Describe the "Knocking"? Loud bang? Tapping? Rattling? Bunch of loud bangs or just one? Does this noise happen when you shut off a faucet or whenyou open the drain? Back to you, tom

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Originally Posted by speedball1

Describe the "Knocking"? Loud bang? Tapping? Rattling? Bunch of loud bangs or just one? Does this noise happen when you shut off a faucet or whenyou open the drain? Back to you, tom

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Tom it is a bunch of loud knocking whenever we turn on a hot water faucet--it stops after about 10 to 15 seconds--nothing to do with drain or when we shut off

Good morning Steve,
Knocking, popping, creaking and crackling pipes are a common complaint, especially in colder weather. I can tell you what's happening and take the mystery out of it but you're not going to like the repair. When a draw is made on a hot water line the line expands against a pipe strap next to a stud. The heat expands the pipe causing it to rub against the stud to which it is pipe strapped. This is the sound you hear. As it cools it contracts and the noise is heard again. To repair it you must tear open the walls and locate the pipe strap that's causing the problem and shim it tight. Most people when they learn what causes it just elect to live with it. Regards, Tom

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Originally Posted by speedball1

Good morning Steve,
Knocking, popping, creaking and crackling pipes are a common complaint, especially in colder weather. I can tell you what's happening and take the mystery out of it but you're not gonna like the repair. When a draw is made on a hot water line the line expands against a pipe strap next to a stud. The heat expands the pipe causing it to rub against the stud to which it is pipe strapped. This is the sound you hear. As it cools it contracts and the noise is heard again. To repair it you must tear open the walls and locate the pipe strap that's causing the problem and shim it tight. Most people when they learn what causes it just elect to live with it. Regards, Tom

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Thanks Tom---the ceiling in my furnace room is not finished & I am able to see the pipe that I think is causing the problem---would I be able to cut a 1foot by 1foot hole at the end of the pipe & cut the pipe there & in the furnace room--remove the copper pipe & replace it with pvc??

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would I be able to cut a 1foot by 1foot hole at the end of the pipe & cut the pipe there & in the furnace room--remove the copper pipe & replace it with pvc??

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You could but why not simply shim the pipe so it doesn't knock? Regards, Tom

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Originally Posted by steve connolly

thanks Tom---the ceiling in my furnace room is not finished & i am able to see the pipe that i think is causing the problem---would i be able to cut a 1foot by 1foot hole at the end of the pipe & cut the pipe there & in the furnace room--remove the copper pipe & replace it with pvc????

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Thanks Tom---rather than cut out the ceiling to locate the pipe---the builder came over & says I am over my 1- year warranty so I am not covered---he is suggesting installing some sort of small water pump which will keep the hot water circulating that way the pipes don't cool down & this will stop the knocking---your thoughts are appreciated

Hi Steve,

If Tom agrees and you want to install a hot water heater recirculating system, Watts system is the best that I have dealth with it, click on the link below, good luck.

John

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Originally Posted by afaroo

Hi Steve,

If Tom agrees and you want to install a hot water heater recirculating system, Watts system is the best that i have dealth with it, click on the link below, good luck.

John

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Thanks John---have not heard from Tom Yet-----does it have to plug into electricity?? expensive?? -is it noisy as our water tank is just below our bedroom----thanks for your info.

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Originally Posted by steve connolly

Thanks John---have not heard from Tom Yet-----does it have to plug into electricity????expensive???-is it noisy as our water tank is just below our bedroom----thanks for your info.

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Hi Steve,

You will hear from Tom soon.

Yes follow the instructions it needs to be pluged to electric power after you install it on the water heater, it is not expensive approx. $195.00 in home depot it is very easy to install, and it is not noisy, Good luck.

John