G.E. furnace age ?

Hi everyone ! I am having a problem finding an age for this G. E. furnace. The home was built in 1964 and I suspect that is original equipment. Thanks in advance for any help…Rick

Model # 150LS52
Serial # 582001 247

Model # TA40FK51
Serial # 207493 335

I think it goes by the last three numbers- 247. The 47th week of '62, '72, '82 etc… If you think it is original than it probably is 1962. Hope this helps.

Thanks David !

I just found a list that had G.E. HVAC codes on it, and that exactly what it said. Thanks again…Rick

That furnace is about ready for a new filter.

I get 24th week of 1967, 1977, 1987, etc.