what is the age

Specific Inspection Topics Plumbing Inspections
1

A O Smith ggl 30751

2

Hi Patrick,

I don’t have a listing on water heaters. I generally check the ANSI sticker to get a date range. I guess you may have to wait until tomorrow to get your answer. Wish I could be of more help. Here is a link to A.O. Smith Contacts:

http://www.hotwater.com/contact.html

3

Hey, Patrick.
That looks more like a model number to me.
With a serial number I can probably help you.