Why Is The Supply Line To My Hot Water Heater Hot?
I just bought this house and I am doing alot of small repairs when i noticed that the supply line going to the hot water heater is hot. When i turn on the tap it immediately goes cold. The hot water heater is from 1996 and is gas. If anyone has any idea i would really appreciate it. I am going to replace it this weekend anyway because of the age.
Thanks
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6 Responses to “Why Is The Supply Line To My Hot Water Heater Hot?”
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September 7th, 2009 at 5:17 pm
Yes the vent pipe will be hot to the touch, and may cause burns if touched while the burner is in operation. NOTE: don’t touch it !!!
It would be normal for the cold water inlet line to be warm to the touch. This is called thermal-siphoning. This can lower the efficiency of the unit depending on how long the tank sits idle.There are simple devices to eliminate the problem called “heat traps”. They come in different forms ,,loop type or in-line threaded types readily available in plumbing dept of your favorite hardware store. More information is available on the web. For reference please link to :http://www.eere.energy.gov/consumer/your…
September 7th, 2009 at 9:18 pm
Do you have single handled faucets?
If you do. you may have a bleed over from one of your faucets.Also you may want to check that you are vented well with the proper hoods.
September 8th, 2009 at 1:26 am
The copper cold water pipe is a good conductor of heat. It is conducting heat from the how water inside the heater.
This is a source of energy loss, so I wrapped mine with insulation.
September 8th, 2009 at 4:09 am
YEAH THERES A TUBE ON THE SUPPLY SIDE OF YOUR HOTWATER TANK THAT FORCES THE COLD WATER TO THE BOTTOM OF THE TANK SOMETIMES ON A OLDER TANK THE TUBE WHICH IS INSIDE THE TANK FALLS IN AND NOW THE WATER ISNT SEPERATED FROM THE NEW INCOMING WATER AND THE ALREADY HEATED WATER GET A NEW HOT WATER TANK GOOD LUCK
September 8th, 2009 at 10:15 am
this is normal, the heat from the water heater is being absorbed by the lines, both the incoming and out going lines should be warm in the area of the heater …this is normal. i guess the word is conduction
September 8th, 2009 at 11:31 am
You may have thermal siphon in your hot and cold pipes. This is caused by the hot water working it’s way up both the hot and cold pipes. If you are replacing the water heater, you can either install thermal siphon breaks or install loops in the piping coming out of the water heater. The flexible copper tubing normally used can be twisted into a loop to stop the siphon affect. I would also insulate the piping from the water heater to either the wall or the first bend in the pipe going down.