A.O. Smith Boiler Age

I did an inspection today and the boiler was an A.O. Smith Permaglas. Model # HW80.
Serial # 600 61 7 A 0405. The house was built in 1971. This may be the original boiler but I’m trying to get a build date for the buyer. I don’t see anything on Building Intelligence Center listed for AO smith boilers, only water heaters. Does anyone know where else to look for information? Thanks.

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The color alone tells me it’s likely original to build.


I agree…for 10 characters needed.

What do you mean " 10 characters needed?

The forum requires a 10 character minimum response.

LoL. I thought that you were talking about number of digits for the serial number.

From tech support.


Exactly what I was thinking; a dinosaur. BTR