I am having trouble determining the age of this home’s hydro heat air handler. Label is marked State Ind. couldn’t find it on Building Center. Home was built in 1998 so I am pretty sure it is original. Just curious if anyone know the serial nomenclature. 
May of 1993 if they number like the water heaters.
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5 years is a long time to sit in a warehouse
Well that’s what I was thinking, but it didn’t make sense that it was that old. Thank you
It has an SBCCI approval number on it. The ICC has been around since 1994.