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Old 06-29-2014, 11:52 AM   #1
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Odor in water comimg from only hot water faucets.

Hello, can the hot water tank have a build up of algae causing an odor when faucets open?

cold water faucets no odor.

If so how to correct.

Any help appreciated.

Thank you.
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Old 06-29-2014, 12:03 PM   #2
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odor in water comimg from only hot water faucets.

It could be a build up of sulfur (boiled egg smell) from a mineral reaction from non use. Well water seems to cause it to happen a little quicker. If you have a Suburban heater, it may need an anode rod which helps to keep the smell down but will not stops the smell from months of non use. We very seldom have a smell problem because we use ours almost real often. If you have the ability to just flush the water heater with fresh city water, you odor will disappear.

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Old 06-29-2014, 12:23 PM   #3
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This could be serious (legionnaires syndrome) or could possibly be organics in water. I would start by giving water system sanitizing flush with pressure vent open on hot water tank, then get a good water filter to remove any foreign debris. This would be a good start hopefully its just organics venting when heated. I always flush my system yearly or after sitting for a month or so. Good luck.
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Old 06-29-2014, 12:43 PM   #4
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I had the same rotten odor from my hot water heater when it sat for six weeks in the summer with no use. I sanitized with four cups of bleach and ten gallons of water directly into the water heater. Since then I drain the water heater if I will not be using it for a couple of weeks and shut off the circuit breaker for the electric water heater.
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Old 06-29-2014, 01:11 PM   #5
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The amount of mineral deposits in a small volume RV water heater can be surprising. The anode rod in a Suburban WH (Atwood's don't have them) is to sacrifice a more electrically reactive metal instead of the tank itself. Anodes have nothing to do with preventing algae or bacteria growth.

I wouldn't use bleach, it won't remove mineral deposits. Use vinegar.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 06-29-2014, 01:13 PM   #6
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The rotton egg odor happens if water allowed to sit unused in the heater too long, especially if it's well water.

Also, if you have a Suburban water heater, replace the anode rod with aluminum instead of using magnesium. Magnesium will make the smell worse.
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Old 06-29-2014, 04:51 PM   #7
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Hey that's right Paz.

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odor, water

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