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Products > Powered Anode Hex

For Water Heaters of 40-80 Gallons That Have Hex-Head Anodes
A powered anode with rigid electrode


  • a powered anode
  • pipe-thread seal tape
  • dielectric grease
  • instructions

This replaces the anode that came with your tank. Fits all brands of all glass-lined steel residential heaters of 40-80 gallons with 3/4-inch ports and a hex-head anode in its own port on top of the heater and hanging straight down.

Don't use in stainless steel or galvanized tanks, or the A.O. Smith Vertex. 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, this product may require you to enlarge the anode port cutout with snips. We suggest using SKU27 instead.

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, the anode 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.


Socket wrench with 1 and 1/16-inch socket to remove old anode, and 1 and 3/8-inch socket to install the new one.


This powered anode comes with a 20-year warranty. Be sure and fill out and send in the warranty paperwork.


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.

Shipping is by UPS within the contiguous United States. UPS does not deliver to post boxes. Allow up to about a week for delivery. Canada, Hawaii and Alaska are only served by Priority Mail and can use a post box.


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 somewhat above the top of the tank and may prevent reinstallation of the vent housing.

We highly recommend that you read our Water Pressure Issues page, as high pressure can damage powered anodes.

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 or are in any doubt at all and we can probably help.


The shopping cart generates an invoice and response, but we will give you delivery date and tracking information within a few days of your order by e-mail. We try to ship within one business day. If there is any hitch, we'll let you know immediately. If you hear nothing, consult your e-mail junk file. It's not uncommon for spam blockers to reroute our e-mails.


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


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