Hello all -

My gas water heater failed today, livin' on cold water until
I get it replaced.

Current unit is an A.O. Smith 40 gallon, installed June
1999. Just shy of 18 years old, so I guess I got my money's
worth from this one.

I'll like to go for a 50 gallon unit this time if it will fit.
Browsing the net, looks like the 50 gallon "tall" units are
60" high (by the posted specs).

Question:
Does this posted spec include the "bonnet" on top, as well,
or just the height of the tank itself?

I measured from the elbow of the vent pipe, I've got 64"
clear from the floor to the bottom of the elbow (which can't
be relocated any higher). Only leaves 4" to work within.

If that won't work, maybe I can get the shorter unit. But
that's a bigger diameter, and it could involve additional
mounting work. I'll have my plumber guy take a look before I
commit to the larger capacity.

Questions:
I don't mind paying a little more for the 10-year warranty,
IF you're actually getting something for it.
Is the extra money worth it?
Or -- are you getting the same unit (no physical
differences), but just "paying up front" for the additional
warranty period?