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Old 02-08-2016, 07:15 PM   #1
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To Anode rod or not

Have 2015 FC 28 with Attwood water heater. Local mobile RV mechanic recommended using an anode rod, even though Attwood and Airstream suggested it was not needed. Any problems using anode rod?


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Old 02-08-2016, 07:20 PM   #2
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I would use a magnesium anode rod. An aluminum rod would be somewhat useless.
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Old 02-08-2016, 08:16 PM   #3
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Have 2015 FC 28 with Attwood water heater. Local mobile RV mechanic recommended using an anode rod, even though Attwood and Airstream suggested it was not needed. Any problems using anode rod?


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Well, I think I'd be more inclined to go with Aistream/Atwood!

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Old 02-08-2016, 08:21 PM   #4
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Have 2015 FC 28 with Attwood water heater. Local mobile RV mechanic recommended using an anode rod, even though Attwood and Airstream suggested it was not needed. Any problems using anode rod?
Your RV mechanic knows not of what he speaks. Attwood water heaters are aluminum-lined and do not need anode rods. Some RV water heaters do, but Attwoods are not among them.

But if you choose to ignore both Airstream and Attwood's recommendations and pay for an anode rod that you do not need, then you would need a magnesium anode rod in order to protect the aluminum tank lining.

But you should be aware that the EPA's Primary Safe Drinking Water Standards call for a maximum level of 0 parts per million of magnesium in drinking water, meaning that if you use a magnesium anode rod in your water heater, you should never use that water for drinking, cooking, dishwashing, or bathing— any sanitary purpose.
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Old 02-08-2016, 09:27 PM   #5
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No anode rods are required or suggested for Atwood (that's one 'T') water heaters. In fact, use of an anode rod in any Atwood heater will void your warranty!

The 'other' RV water heater made by Suburban REQUIRES a magnesium anode, as it has a different tank composition.

Your 'tech' needs a bit of RV re-education.
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Old 02-08-2016, 09:39 PM   #6
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Two word answer, "not needed". I came from blue water sailing boats where I had to change 4 anodes and 2 hull plates at least once a year. Nice to not have to mess with them in my Airstream.
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Old 02-09-2016, 01:06 PM   #7
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Have 2015 FC 28 with Attwood water heater. Local mobile RV mechanic recommended using an anode rod, even though Attwood and Airstream suggested it was not needed. Any problems using anode rod?
Hello Ron

I used to live in Cumming, and I know from experience that well water in that area is extremely corrosive. I lived in a little residential development called "Dogwood Lane" that had a shared well. At the time I was there the houses were around 20 years old and had been built with copper supply plumbing, and it all had pinhole leaks leading to expensive repairs. The pH of the water was between 4.0 and 5.0.

It is true that Atwood doesn't recommend using an anode, because the tank is aluminum lined. There is a chance that your local RV guy knows from local experience what works best for the water there, but I'm skeptical.

I would recommend leaving the water heater without an anode. If you fill up with water at home, I would suggest you talk to a water treatment company and get the pH tested and install equipment to neutralize it if necessary. Your home plumbing and Airstream plumbing will both last longer.
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Old 02-09-2016, 01:12 PM   #8
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I agree, no anode. Insofar as the impact of corrosive water is concerned, remember that one "feature" of RV travel is that you will be getting your water supply from many different sources so the odds that they are all chemically similar is pretty small. Obviously this would not apply if you are stationary or always camp or fill your tanks at the same place.
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Old 02-09-2016, 02:03 PM   #9
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No anode rods are required or suggested for Atwood (that's one 'T') water heaters.
Can'tt help it. My "TT" key stticks!
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Old 02-09-2016, 05:25 PM   #10
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Can'tt help it. My "TT" key stticks!
Sorry for your troubles. Have you seen a specialist about it???
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Old 02-09-2016, 06:31 PM   #11
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Can'tt help it. My "TT" key stticks!
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Sorry for your troubles. Have you seen a specialist about it???
There are pills you can take for that...
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