The RVers Corner

RV Water Heater Anode Rod

water heater anodeAn anode rod is used to help prevent corrosion of a steel water heater tank. The corrosive elements in the water attack the anode rod instead of the steel tank. The anode rod should be inspected yearly and replaced as needed.

Aluminum tanks have a special inner coating and do not use an anode rod.

Atwood tanks are lined with a material that acts as an anode rod, so therefore no anode is needed. Suburban uses a glass-lined steel tank and a sacrificial anode rod (magnesium) is used to prevent the steel from being attacked.

I don't see more Atwoods with corroded tanks as compared to Suburban tanks. (in my neck of the woods). I have seen anode rods in Atwood tanks (installed by previous owners) that were impossible to remove, and a welder friend explained that it is the different metals that causes this. The anode rod threads are steel and the tank threads are aluminum. This is why Atwood uses a nylon plug for the drain and does not recommend replacing it with a brass or steel one. I suppose if the anode rod was installed with teflon tape or a plumbers pipe sealant this problem would be eliminated, but would the customer remember to do this every time the anode is removed and replaced?

I hesitate to recommend anything to a customer that the manufacturer advises against. If something goes wrong the customer comes back, even years later, and says "You recommended such and such, now you owe me a new thingy"! Also, I figure that the manufacturer is the best one to recommend something to do with their product.

I do recommend flushing the hot water tank occasionally to get rid of the sediment and corrosive deposits in the bottom of the tank. Just pull the drain plug, allow it to drain, and direct a stream of water into the drain hole to agitate the sediment. Then allow it to drain, repeat until the water comes out clean. Do this about every other month (or more if your water has a lot of minerals) The flushing also helps to eliminate any hydrogen sulfide that may build up in the tank (causes the rotten egg smell in the water), and makes the heater more efficient.

Anode See Anode at Amazon

Other Articles:

RV Appliances    RV Winterizing   RV Water Sanitizing

RV Maintenance

RV maintenance is a subject that every RV owner can relate to! These articles will help you "do-it-yourself" with confidence and with a logical place to start! Each catagory has a list of articles relating to that area. Enjoy! Read now!

RV Tips

RV tips to make your experience more enjoyable! Read more ...

Used RV Parts

RV Salvage yards listed by State and Canada

Information presented on this site is for educational or entertainment purposes only. You are responsible for your own actions should you use any information found on this website.

Disclosure: Advertisements are placed on this website to offset the cost of maintenance and to keep this site free for everyone to use. Owners of this website will receive compensation for products and services purchased through featured advertisements. All claims of actual user results should be considered atypical.

Website Les Doll All rights Reserved

Legal