Both tanks appear to have been installed circa 1990. The anodes
needed replacing, but weren't so bad that the tanks would have been
attacked, so I caught them in time. Damn previous owners :(
When factoring the replacement of anode into your decisions, you need
to factor in the efficiency of the new water heater vs the old water
I suspect the new water heater would pay for itself in a couple of
years and also give you more hot water faster.
I suspect that today's water heaters are no more efficient. Do you think the
trend towards greater efficiency can go on indefinately? If the water heater
hasn't started to rust, just replace the damn anode. Any slight energy savings
will never repay the cost of a new water heater.
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