Truck Campers’ Sacrificial Anode Rods

The Sacrificial Anode Rod

Part of a truck campers’ preventative maintenance program should be to check regularly and replace, as need, the sacrificial rod in the Suburban hot water tank.

A 1 year old sacrificial anode rod Above -A 1-year-old sacrificial anode rod next to a new $20 rod.

Below – A replacement 10-gallon Suburban tank for $393.49

10 gallon Suburban tank

majority of Hot water comes in two flavors

For truck campers, there are two primary manufactures of hot water heaters—Atwood with aluminum alloy tanks and Suburban with their steel tanks.

A sacrificial rod of either magnesium or aluminum or both is suspended in the Suburban water tanks.

The purpose of these rods is to slowly corrode away, protecting the tank from rusting and being corroded. Anode rods need to be inspected regularly and replaced as needed.

At the very least, when you winterize your RV would be a good time to inspect and replace the anode rod.

Review for the sacrificial anode rod for your Suburban model.

Two possible sacrificial anode rods for Suburban are available from Amazon:

You can find additional safety information and a video on replacing the sacrificial rod, flushing of the heater as well as additional maintenance tips at:


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