Capacity: 50 US Gallons
Recovery - 42 (?)
Installed - 1991
What's the energy factor of this old gas waterheater? Were waterheaters even rated in the early 90s?
I'm curious to know if today's natural draft models are significantly more efficient than what I have. I looked at the specs of new models and they're all piss poor - ranging from 0.58 to 0.60.