On Sep 15, 5:01*pm, " wrote:
On Sep 14, 11:23 pm, ransley wrote:





On Sep 14, 9:50 pm, " wrote:

On Sep 14, 10:23 pm, Tony Hwang wrote:

Hi,
Under same condition, only comparing tank life, which one would last
longer, natural gas one or electric one?

electrics tend to last longer.

the downside is much lower performance for electric and higher
operating cost

If cost per btu of both fuels is the same, or nearly, this is not
true. Electric is near 99% efficent, your average gas tank sold is
near 50-65% efficent, with the high end on condensing Ng around 80-85%
total efficency, known and rated as EF. Recovery or performance is
what you buy and need. Gas also loose efficency every year due to
scale buildup that does not affect electric units. And how many ever
have their burner checked to be sure its burning right. A premium
could be paid for electricty and an electric could still be cheaper to
run. Every areas fuel and electric costs are different so run your own
numbers.

obviously you have never replaced a scale covered electric heater
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What is the point of your statement, I guess you dont realise it is
still transfering heat and has nothing in similarity with scale at the
bottom of the tank. The electric element is submerged in water, In Ng
the heat is outside the tank transfering through metal and scale, the
less that transfers the more of your money goes up the chimney. Scale
in the tank bottom impeedes heat transfer. Why not google scale -
reduced efficency and learn why Ng tanks loose efficency every year. I
pulled out a 15 yr old Ng tank that had 12" of hard scale in it, my
new water heater cut my bill alot.