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The sacrificial anode in a Hot Water Tank takes most of the rusting problems away from the tank itself, hence the word "sacrificial!" When the anode has finished its course of use, you will get rusting happening on the walls of your tank which leads to a wrecked and leaking hot water tank. Manufacturers do NOT want home owners to know about these anodes, because if everyone replaced them there would not be any hot water tanks to replace.

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Q: What is the anode in a gas water heater?
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How do you remove magnesium rod in hot water heater?

Follow Some steps for remove magnesium rod in hot water heater.1 Turn off water and fuel supply (gas or electricity) to water heater.2 Partially drain the water heater.3 Locate the anode rod on the water heater; if necessary, unscrew and lift off the cover from the top of the heater.4 Use a ratchet wrench and 1 1/16-inch deep socket to unscrew the anode rod from the heater.5 If the anode rod won't budge, slip a steel pipe onto ratchet wrench handle for extra leverage.6 Lift out and discard the old anode rod.7 Wrap Teflon tape around threads of new anode rod; insert anode rod into water heater and tighten with 1 1/16-inch socket.8 If limited space above the heater prevents the installation of a standard anode rod, install a collapsible type.9 Turn on the water and fuel supply to the water heater.alliedallcityinc.com


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Can the water heater operate without a sacrafical annode?

Water heaters can operate without an anode rod. If tank is not made of steel, then no anode rod is present. If tank is made from steel or glass-lined steel, then anode rod is necessary for long life of tank. Without anode rod, water will rust tank causing leaks and possible failure where tank bursts open and floods house until water is turned off. Anode rods are made of lower noble metals than steel water heater tank. When the two metals are connected together, water reacts with lower noble metal first, so the water dissolves anode rod instead of rusting tank. Anode rods should be checked every two-four years, more frequently when water is softened. Factory-made, gas and electric, steel water heaters come with one or two anode rods installed. Tanks with longer warranties generally have two anode rods. Check manual for specifics. Adding a second anode rod can prolong life of water heater. Ship hulls and propellers, and steel bridges, and other structures that come in contact with water also have anode rods.


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