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I just learned water heaters have an "anode" and its important davidlaska 06-08-2007
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Posted by C & E on June 8, 2007, 5:51 pm

>
>> On Fri, 08 Jun 2007 17:33:04 -0000, "hallerb@aol.com"
>>
>>>
>>>> > looked bumpy. I took it out and it is a aluminum version, How do I
>>>> > clean it? lime away and some scraping? My labor is cheaper that
>>
>> You can't clean it. It's being eroded away on purpose, to prevent
>> damage somewhere else.
>>
>>>> > buying new parts or heaters.
>>>> Replace it.
>>>> Bob
>>>so the OP got a used tank hopefully for free...........
>>>by the time he replaces the anode, replaces the elements and cleans
>>>the sludge out of the tank.....
>>>Has he wondered where that sludge came from? Almost certinally from
>>>the inside of the tank which is nearly rotted out:(
>>
>> I thought the sludge was mostly dissolved minerals in the water, and
>> that the tank is glass-lined and didn't rot? No?
>>
>>
>>>Now he has a old tank, thats less efficent than a new tank with high
>>>efficency foam.
>>>
>>>So his tank has cost probably cost nearly as much as a brand new cheap
>>>short warranty tank
>>
>>
>
> is the anode aluminum or ZINC?
>
> --
> Jim Yanik
> jyanik
> at
> kua.net

The website posted by Grandpa (I think) says Magnesium or Aluminum. Good
site!



Posted by hallerb@aol.com on June 8, 2007, 5:55 pm

>
> I thought the sludge was mostly dissolved minerals in the water, and
> that the tank is glass-lined and didn't rot? No?
>

its rust the glass lining isnt perfect and fails over time which is
why tanks leak.

the fact the anode is eroded away is another indicator that tank is
old and on its last legs.

I love reusing stuff and saving money but this one is a loser....
sorry.


Posted by Bob F on June 9, 2007, 2:45 pm

>
>>
>> I thought the sludge was mostly dissolved minerals in the water,
>> and
>> that the tank is glass-lined and didn't rot? No?
>>
>
> its rust the glass lining isnt perfect and fails over time which is
> why tanks leak.
>
> the fact the anode is eroded away is another indicator that tank is
> old and on its last legs.
>
> I love reusing stuff and saving money but this one is a loser....
> sorry.
>

My understanding is that periodically replaceing the anode can
significantly increase a wateh heaters life.

Bob



Posted by on June 10, 2007, 10:15 am
>
>
>
>
>
>
>
>
> >> I thought the sludge was mostly dissolved minerals in the water,
> >> and
> >> that the tank is glass-lined and didn't rot? No?
>
> > its rust the glass lining isnt perfect and fails over time which is
> > why tanks leak.
>
> > the fact the anode is eroded away is another indicator that tank is
> > old and on its last legs.
>
> > I love reusing stuff and saving money but this one is a loser....
> > sorry.
>
> My understanding is that periodically replaceing the anode can
> significantly increase a wateh heaters life.
>
> Bob- Hide quoted text -
>
> - Show quoted text -


And I guess that's the real question. How much longer will one get
from a tank if they do check and replace the anode when it's needed?
It would seem to make sense to me too. I started doing it on my
current water heater which is about 6-7 years old now. The original
anode is about 1/2 gone now. While it seems to make sense and I've
seen lots of opinions, I haven't actually seen any tests or studies
done. Has anyone else?


Posted by dpb on June 10, 2007, 10:37 am
trader4@optonline.net wrote:
...

> And I guess that's the real question. How much longer will one get
> from a tank if they do check and replace the anode when it's needed?
> It would seem to make sense to me too. I started doing it on my
> current water heater which is about 6-7 years old now. The original
> anode is about 1/2 gone now. While it seems to make sense and I've
> seen lots of opinions, I haven't actually seen any tests or studies
> done. Has anyone else?

Far too many variables to be able to do any meaningful tests --
differences in tanks, anode design, water, usage, etc., etc., etc., ...

Best one could do would be a test under a given set of controlled
conditions for a given tank design, but that would have virtually no
value outside that test environment...

--



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