Quote:
Originally Posted by jrref
The main reason is the anode rod in the 12 year tank will be thicker than the 6 year tank. They list this in their specifications. The performance of the anode rod will determine the longevity of the tank. Remember, the anode rod is a sacrifical rod that protects the tank from corrosion.
The other option if you are handy is to get the 6 year tank and purchase an electronic anode rod. You can get these on Amazon. Then at installation have the tech remove the anode rod and install the electronic rod. You will void the warranty but from what everyone has indicated the warrany is not worth much anyway. With the electronic rod the tank should last a very long time.
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I doubt that many people will do this. If a $449 water heater lasts only 8 to 10 years, I feel like I got my money's worth.