HEIL (Furnace) Serial No. 4357 5873
Looks to be about 25 years old.
TRANE (A/C) 77C 20095
Appears about 30 years old.
Never mind–I found the damn book in a bottom drawer.
Both units appear to have been manufactured in 1977.
Thanks, anyway.
Bad day Jae?
Maybe Jae is just impatient today 
LOL
we all Have it sometimes Micheal. My wife calls it old age
That’s about right.
Yeah, it’s been a bad day–out in the rain a bit. I’m too old for this sort of thing.
My arthritis and sciatica…
and anything else you can imagine.
I feel pretty good when the sunshines, though. Then I can work in the yard.
try this website http://hiseach.org/havc.aspx
Looks like a good site, Randy–but it didn’t go back far enough for this old stuff.
BTW, the URL posted is misspelled…
http://hisearch.org/hvac.aspx works much better.
Yeah don’t you love growing old hair poking out in strange places, bones crunching,eyes get weak. lol Then they ask why so grumpy
Yes… the hair I lose grows in other places, YEAH!
So I’m not really losing hair at all! Just relocating!
I hope it never gets so bad I ask "Doc, can you transplant the hair from my lower back or ears 
to my head?