Age of "Water Furnace" Geo-Thermal Heat-Pumps

Ran into two units this week. Empty houses … can’t get idea of age. Anybody got any info on them??

Model: WXV041A201S S/N: EA5844

Model: WXV025A2015 S/N: EJ4163


I had to call a dealer to get that information.

Thanks Randy, I was going to try calling today but I thought I’d just throw the question out last nite.