RickSab Posted July 10, 2011 Report Share Posted July 10, 2011 I have a 81 gal 154,000 btu A O Smith hot water heater I need help finding the age of. It looks like it was recently installed (2years) but, I used Mike trusty age chart and this serial number is longer than the charts coding. Serial number MMO1-1353893-110. Does anyone have a new date formula? Thanks for the help. Quote Link to comment Share on other sites More sharing options...
Nolan Kienitz Posted July 10, 2011 Report Share Posted July 10, 2011 All my data files indicate: 2001 Quote Link to comment Share on other sites More sharing options...
Ben H Posted July 10, 2011 Report Share Posted July 10, 2011 While no files are being looked at, and really have no literature to back up anything, just a quick glance of the SN, I thought 01 as well. Quote Link to comment Share on other sites More sharing options...
hausdok Posted July 10, 2011 Report Share Posted July 10, 2011 81 gallon - 154,000 Btu? That's a commercial unit. I'd suggest giving A.O. Smith's commercial division a call in the a.m. and ask someone there to email you a copy of whatever document they have that explains how to decode the serial numbers on their commercial units and then we can add it to the chart. IF I remember to do so, I'll call 'em too. ONE TEAM - ONE FIGHT!!! Mike Quote Link to comment Share on other sites More sharing options...
RickSab Posted July 11, 2011 Author Report Share Posted July 11, 2011 Thanks to all that replied. I thought 01 also, but it looks to new. I plan to call them tomorrow. I'll post what I find out. Enjoy whats left of the weekend. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted July 11, 2011 Report Share Posted July 11, 2011 Thanks to all that replied. I thought 01 also, but it looks to new. I plan to call them tomorrow. I'll post what I find out. Enjoy whats left of the weekend. Did you check the date on the TPR, the gas valve, and the gas connector? Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted July 11, 2011 Report Share Posted July 11, 2011 If only they where all this easy. Click to Enlarge 49.28 KB Quote Link to comment Share on other sites More sharing options...
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