age help

i’m in need of some assitance on age here…

Lennox heat pump
M - HP25-461-2P
S - 5894M21393

also, for any great suppliers of manufacturing years - an Everkleen water heater
S- LW0197C10586
M - 26307

help is MUCH appreciated!!
not usual report info, but was asked if I could find out, so trying to get some information


thanks for your time.

No Problem
Thats what we all do help each other

As noted in a previous post, the Lennox is 1994, but more specifically December 1994.

I don’t have an Everkleen water heater in my database, but the type of serial number would seem to indicate November 1990.