Powered Anode Hex, CerAnode

For Water Heaters With Hex-Head Anodes




Photos showing two views of a powered anode; and a comparison of water heaters with a recessed anode and one above the cover


  • a powered anode
  • a 4-inch PEX-lined steel nipple
  • a galvanized-steel coupling
  • pipe-thread seal tape
  • instructions

This replaces the anode that came with your tank. Fits all brands of all sizes of glass-lined steel residential heaters with 3/4-inch ports and a hex-head anode in its own port on top of the heater and hanging straight down. If your tank is larger than 80 gallons, tell us. The anode may need some adjustment of its output.

The powered anode hex nut is usually wider than the cutouts in the covers of water heaters. The hardware saves you having to enlarge the cutout with snips.

The powered anode hex nut is usually wider than the cutouts in the covers of such water heaters. The hardware saves you having to enlarge the cutout with snips.

Don't use in stainless steel or galvanized tanks, or the A.O. Smith Vertex. Not advised for indirect-fired water heaters. Not recommended for multi-anode indirect heaters.

IMPORTANT! If you have an electric water heater made after April 2015 by A.O. Smith, Lochinvar, State, Kenmore, Reliance, American, Maytag or Whirlpool; or Rheem, Ruud, Richmond, or GE, let us know because you'll need a pipe nipple longer than four inches.

Click here to learn how to read the label to know when a water heater was made.


The anode will keep your tank from rusting and breaking, while alleviating odor problems because of anaerobic bacteria found in some water that react with regular magnesium or aluminum anodes to produce hydrogen sulfide gas and a rotten-egg odor.

In water heaters with softened water but no odor issues, it provides a permanent replacement for sacrificial anodes, which are often consumed rapidly in softened water and thus, require frequent replacement.

It IS possible to use in any heater, but if you replace a sacrificial anode in a tank without a softener in hard water, we strongly recommend also putting in a sediment flush kit -- and actually flushing the heater every six months. Sediment buildup can bury the bottom of the heater, cutting it off from the anode's protection.

If you have a vacation cabin where the water heater sits idle, it may be that, no matter what anode you put in it, the water will still smell bad. We don't want you to buy a powered anode if it won't solve your problem. You might do better to replumb your water heater to allow hydrogen peroxide to easily be added. That WILL solve the problem. Click here to learn more.

For other questions, read our FAQ page.


The products offered here are designed to make water heaters last longer, or solve specific problems. Installation is potentially do-it-yourself, but if you have the least doubt about your abilities, we suggest that you obtain expert help.

Remember also that if you have difficulties with installation, odds are that a professional or handyman will know a way to do it.

Prices include shipping by International Priority Mail. Allow about 6-10 days for delivery.


This anode must replace the one that came with the tank or the smell won't go away. If your tank has two anodes, the second one must also be removed.

If you have a power vent heater, the power connector will stick up 4-5 inches above the top of the tank and may prevent reinstallation of the vent housing.

If you install this device in a way significantly differently from the instructions, you may void the warranty. Contact us if you have an unusual installation problem and we can probably help.

If you have read our resources and still have trouble figuring out what you need, you can buy a consultation for $30 and we'll scope out your situation and make recommendations.


Merchandise in original condition can be returned within 120 days for a full refund of the purchase price, not including shipping. E-mail for instructions and authorization.


Powered anodes come with a seven-year warranty. If the LED goes out, or some other issue arises, contact us at

A factory rep will then contact you and try to solve the problem, and authorize replacement, if necessary.


Socket wrench with 1 and 1/16-inch socket to remove old anode, adjustable wrench to tighten new one, which has a1 1/2-inch hex nut. Pipe wrench to tighten nipples and coupling.

SKU227, PRICE: $258, shipping included


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