Brand new AO SMITH tank bottom looks rusted!

Reply

  #1  
Old 07-31-20, 07:46 PM
C
Member
Thread Starter
Join Date: Jun 2020
Posts: 16
Received 0 Votes on 0 Posts
Brand new AO SMITH tank bottom looks rusted!


So I just bought this AO SMITH water heater. Took out the burner, there are many dark spots on the bottom of the tank. What are these? Rust?!
 
Sponsored Links
  #2  
Old 07-31-20, 07:54 PM
C
Member
Thread Starter
Join Date: Jun 2020
Posts: 16
Received 0 Votes on 0 Posts

 
  #3  
Old 07-31-20, 08:43 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 57,809
Received 938 Votes on 875 Posts
That looks like a baked enamel finish with welding spatter.
Is it normal ? Good question.
May require sending your picture to AO Smith.

AO Smith has some production videos online and I was watching them.
The tanks are welded by robots.
I didn't see any shots of the bottom of the unit.
 
  #4  
Old 07-31-20, 09:10 PM
C
Member
Thread Starter
Join Date: Jun 2020
Posts: 16
Received 0 Votes on 0 Posts
So those black spots are welding spatter?

The background are baked enamel finish? The background is NOT enamel-ish, so to speak.
 
  #5  
Old 07-31-20, 09:20 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 57,809
Received 938 Votes on 875 Posts
I'm going strictly by your picture. I've installed water heater but don't usually remove the burners.
If it were welding spatter..... the spots would be raised.
If it was rust.... it would rub off.
 
  #6  
Old 07-31-20, 09:23 PM
C
Member
Thread Starter
Join Date: Jun 2020
Posts: 16
Received 0 Votes on 0 Posts
yes, some spots are raised. For example, the ones circled by rectangular boxes are raised. You can even tell simply by looking at the picture. But some are NOT raised.

Where is the baked enamel finish?


 
  #7  
Old 08-08-20, 08:57 PM
C
Member
Thread Starter
Join Date: Jun 2020
Posts: 16
Received 0 Votes on 0 Posts
I returned this water heater and got another one brand new, but it looked exactly the same. I don't want to return again as I believe that they are all the same. Still need to figure out what those black spots are, and will see how long this new water heater lasts.
 
  #8  
Old 08-09-20, 06:14 AM
C
Member
Join Date: Sep 2017
Posts: 92
Received 3 Votes on 3 Posts
May be too late but have you considered a stainless steel tank? Glass lined tanks have shorter life cycles due to failure often from the glass lining cracking or having not been made well.

Read this article to learn more. https://www.hpacmag.com/features/sta...water-heaters/
 
  #9  
Old 08-09-20, 10:36 AM
A
Member
Join Date: Mar 2010
Location: USA
Posts: 4,031
Received 66 Votes on 64 Posts
Looks to me like nothing wrong.
 
  #10  
Old 08-09-20, 06:17 PM
C
Member
Thread Starter
Join Date: Jun 2020
Posts: 16
Received 0 Votes on 0 Posts
So what are those black stuff on the bottom of the tank?
 
  #11  
Old 08-09-20, 06:29 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 25,502
Received 584 Votes on 536 Posts
Well rust isnt black so it isnt rust. Why cant you accept the answer that's already been given? Looks like the splatter you would typically see on a glass lined tank.
 
Reply
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: