Anode rod with resistor
Hex-head Anode rod w/ resistor
Last longer than ordinary?
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Resistor anode .9 diameter
Flexible resistorized .9 anode
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Anode rod with resistor
Flexible hex-head anode
Not enough space above heater
Flexible resistorized anode
Flexible anode rods at Amazon
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Anode rods
Buy solid hex-head anode
1-1/16" hex head
Zinc-Aluminum or magnesium
Buy Zinc for odor control
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Read more on this page
Read about controlling odor
Anode rod with resistor
Combo Anode rod
Connected to hot water nipple
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replace anode rod
Anodes are standard 1-1/16"
Except combo anodes

Buy bar for hex anode:
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Electric impact wrench
Buy impact wrench for hex anode:
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Air impact wrench at Amazon
Use 1-1/2" for water heater elements and 1-1/16" for anode rods
1-1/16" impact sockets
Buy impact socket for hex anode:
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1-1/16" Tekton shallow socket
Universal joint for impact
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Adapter: 3/8: socket to 1/2" socket
1-1/2" impact for elements
Buy for combo anode:
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Knipex channel locks
Irwin pliers


Release of gas when running hot water
Release of air when running water herater
Gas coming out of faucet
The outgassing of hydrogen is caused by harmless bacteria reacting with anode rod. Usually on homes that have water wells.
Homes with water softener tend to be affected more.
Water softeners cause anode rod to be more reactive, and cause early depletion of anode.
The anode is made from reactive metals (magnesium and aluminum)
Anode protects tank from rusting: http://waterheatertimer.org/Replace-anode-rod.html

In most cases, the harmless bacteria reaction causes sulfur compounds and rotten egg smell.
This is resolved by replacing anode rod, cleaning tank with hydrogen peroxide, or installing powered anode rod.

In some cases, the same type of reaction can produce hydrogen.
WARNING: Hydrogen gas can be produced in a hot water system served by tank heater that has not been used for a period of time (generally two weeks or more).
Hydrogen gas is extremely flammable.
To reduce the risk of injury, open the hot water faucet at the highest location in the house for several minutes before using any electrical appliance connected to the hot water system.

If hydrogen is present, there may be an unusual sound similar to air escaping through the pipe as the water begins to flow.

Do not turn on electric appliance or light switch
Do not smoke
Do not allow an open flame near the faucet at the time it is open.
Safety first:
When returning from absence, purge water line at highest point in house and avoid turning on light switch.
If hydrogen gas is present, it is odorless. Faucet will have sound of escaping air. Open window. Do not turn on vent fan or any electric device.
Solutions for outgassing:
Power anode will solve this problem…. Because the power anode uses electricity and does not use reactive metals such as aluminum or magnesium.
Switch to magnesium anode rod if you have aluminum/ or vise versa. Anode hyperlink
Periodic cleaning tank with hydrogen peroxide can help solve problem…. Information on same link.
Adjust water softener to lowest setting can help.
Add air vent located at high point will remove gas from line but will release the hydrogen.
Remove anode rod will solve problem. Remember if the water heater does not have anode rod, then tank will rust and warranty is void.

Air vent
Air sputters out of faucet
1) Water well... inspect air volume control
Air volume control at Amazon

2) City water .... Add air vent
Air vent/ Float vent

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