A property we looked at recently has this electric hot water tank. There’s no date on it, but it’s obviously quite old and the realtor says to him it looks like an 80s model.

Common wisdom and information I can find online says that you’re doing really well if you get 20 years out of a hot water tank (10-15 years is a more realistic lifespan).

So… How is this tank still functioning? And if we were to buy this house, should we expect that we’d have to replace this basically right away?