{"product_id":"suburban-233516-aluminum-anode-rod-9-3-4-npt-hard-water","title":"Suburban 233516 Aluminum Anode Rod | 9\" | 3\/4\" NPT | Hard Water","description":"\u003cp\u003eProtect your Suburban RV water heater tank from corrosion with the \u003cstrong\u003eSuburban Aluminum Anode Rod (Part 233516)\u003c\/strong\u003e — a \u003cstrong\u003e9-inch sacrificial aluminum anode with 3\/4\" NPT thread\u003c\/strong\u003e that absorbs the electrolytic action that would otherwise eat your tank. Available at The RV Surplus.\u003c\/p\u003e\n\n\u003ch3\u003e⭐ Why Your Water Heater Needs an Anode Rod\u003c\/h3\u003e\n\u003cp\u003eWater chemistry attacks metal tanks electrolytically. An anode rod is the \u003cstrong\u003esacrificial metal that corrodes INSTEAD of your tank\u003c\/strong\u003e, exactly the same way as the water heater in your house.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo anode rod →\u003c\/strong\u003e the electrolytic action attacks your tank lining directly, leading to pinhole leaks and tank failure\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFresh anode rod →\u003c\/strong\u003e the rod corrodes while the tank stays protected\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpent\/missing anode rod →\u003c\/strong\u003e the tank is the next thing to go\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplacing the anode rod is \u003cstrong\u003eone of the most-skipped RV maintenance items\u003c\/strong\u003e — and tank replacement is dramatically more expensive than a new rod.\u003c\/p\u003e\n\n\u003ch3\u003e⚠️ Aluminum vs Magnesium — Match Your Water\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAluminum rod (this part):\u003c\/strong\u003e generally recommended for \u003cstrong\u003eHARD water\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnesium rod:\u003c\/strong\u003e generally recommended for \u003cstrong\u003eSOFT water\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you camp mostly in hard-water areas or your RV has well-water fill, aluminum is the right choice. If you're on soft municipal water or regularly use a water softener, consider a magnesium rod instead.\u003c\/p\u003e\n\n\u003ch3\u003e⭐ Fitment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003e9\" length\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e3\/4\" NPT thread size\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003eFits Suburban RV water heaters with the standard 3\/4\" NPT anode port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Dometic\/Atwood water heaters do NOT use anode rods\u003c\/strong\u003e — they have aluminum tanks that don't need one. Verify you have a Suburban water heater (steel tank with porcelain lining) before ordering.\u003c\/p\u003e\n\n\u003ch3\u003e⭐ When to Inspect and Replace\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInspect at least once per season\u003c\/strong\u003e — more often with heavy use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReplace when substantially eaten away\u003c\/strong\u003e — once more than ~75% of the rod is gone, the tank starts corroding next\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIf the rod comes out looking like a thin wire\u003c\/strong\u003e, you waited too long — order now and don't skip the next check\u003c\/li\u003e\n  \u003cli\u003eA rod that lasts only a few months indicates very corrosive water — consider a magnesium swap or installing an inline water softener\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e⚠️ Installation — With the Tank DRAINED\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShut off power\u003c\/strong\u003e — both LP gas and 120V AC to the water heater\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLet the water heater cool completely\u003c\/strong\u003e — never work on a hot tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTurn off incoming water\u003c\/strong\u003e and open a hot faucet to release pressure\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrain the tank fully\u003c\/strong\u003e through the drain port \/ anode location\u003c\/li\u003e\n  \u003cli\u003eRemove the old anode rod with a 1-1\/16\" socket\u003c\/li\u003e\n  \u003cli\u003eApply fresh thread sealant (Teflon tape or pipe dope rated for potable water) to the new rod's threads\u003c\/li\u003e\n  \u003cli\u003eThread the new rod in by hand first to avoid cross-threading, then torque snug — do NOT overtighten\u003c\/li\u003e\n  \u003cli\u003eClose the drain, open the water supply, bleed air from a hot faucet until flow runs steady\u003c\/li\u003e\n  \u003cli\u003eRestore power and resume normal operation\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003e⭐ Flush the Tank While the Rod is Out\u003c\/h3\u003e\n\u003cp\u003eWith the anode removed and tank drained, \u003cstrong\u003eflush the tank\u003c\/strong\u003e with a water heater tank rinser or a short hose blast through the anode port. Years of sediment settle at the bottom — flushing while you're already in there extends tank life.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e(1) Suburban aluminum anode rod, 9\" × 3\/4\" NPT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNOT included:\u003c\/strong\u003e thread sealant \/ Teflon tape (standard plumbing supply).\u003c\/p\u003e\n\n\u003ch3\u003eManufacturer Warranty\u003c\/h3\u003e\n\u003cp\u003eBacked by Suburban Manufacturing's standard parts warranty. Check documentation for full terms.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: Suburban Manufacturing\u003c\/li\u003e\n  \u003cli\u003ePart Number: 233516\u003c\/li\u003e\n  \u003cli\u003eUPC: 755790713189\u003c\/li\u003e\n  \u003cli\u003eMaterial: Aluminum\u003c\/li\u003e\n  \u003cli\u003eLength: 9\"\u003c\/li\u003e\n  \u003cli\u003eThread Size: 3\/4\" NPT\u003c\/li\u003e\n  \u003cli\u003eApplication: Hard water (soft water takes magnesium instead)\u003c\/li\u003e\n  \u003cli\u003eFits: Suburban RV water heaters with 3\/4\" NPT anode port\u003c\/li\u003e\n  \u003cli\u003eNot For: Dometic\/Atwood aluminum-tank water heaters (no anode rod required)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Suburban","offers":[{"title":"Default Title","offer_id":58679448174895,"sku":null,"price":51.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/7663\/0063\/files\/09-0206-2T.webp?v=1792422758","url":"https:\/\/thervsurplus.com\/en-au\/products\/suburban-233516-aluminum-anode-rod-9-3-4-npt-hard-water","provider":"The RV Surplus","version":"1.0","type":"link"}