{"product_id":"a-o-smith-100074221-anode-rod-holder-kit","title":"A.o. Smith 100074221 Anode Rod Holder Kit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe A.O. SMITH 100074221 is an anode rod and holder kit designed for use in commercial and residential water heaters. The anode rod is a sacrificial component that attracts corrosive elements in the water supply, protecting the tank lining from premature deterioration. This kit includes the rod and the mounting holder needed for a complete service replacement. Licensed plumbers and water heater service technicians install this part during routine maintenance or when inspecting tank condition on applicable A.O. SMITH water heater models.\u003c\/p\u003e\n\u003cp\u003eThis kit is used across a broad range of A.O. SMITH water heater configurations, including direct vent, power vent, outdoor, indoor, and ASME-rated commercial models in both natural gas and liquid propane variants. It is a direct OEM replacement intended for technicians performing scheduled anode rod service intervals or responding to water quality complaints such as sulfur odor or discoloration.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes anode rod and holder for a complete replacement assembly\u003c\/li\u003e\n  \u003cli\u003eOEM part number ensures fit and function on compatible A.O. SMITH water heater models\u003c\/li\u003e\n  \u003cli\u003eApplies to both natural gas and liquid propane water heater configurations\u003c\/li\u003e\n  \u003cli\u003eCovers residential and commercial ASME-rated units across multiple product families\u003c\/li\u003e\n  \u003cli\u003eSacrificial rod design protects tank interior from corrosion between service intervals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with the following A.O. SMITH water heater models: TK-540P-NEH (NG), T-H3J-DV (NG), T-H3-OS (LP), T-K3-PRO (NG), T-H2-DV (LP), T-K3 (LP), T-H2S-DV (NG), T-K3-SP (NG), T-H3S-DV (NG), T-H3J-OS (NG), T-H2-OS (LP), T-M32-ASME (NG), T-H2-OS (NG), T-H2-DV (NG), T-D2-IN (LP), T-K3-SP (LP), T-H3-DV (NG), T-H2S-OS (LP), T-M50 (NG), T-H3-OS (NG), T-H3M-OS (LP), T-H3M-DV (LP), TK-540P-PIH (LP), TK-540P-PEH (LP), T-M50-ASME (NG), T-M50-ASME (LP), T-H3M-DV (NG), T-K4-IN (LP), T-D2-OS (NG), T-D2-IN (NG), T-K3-PRO (LP), T-H3J-OS (LP), T-H3S-DV (LP), T-H3S-OS (LP), T-M32-ASME (LP), T-M32 (LP), T-K3 (NG), T-K3-OS (LP), T-M32 (NG), T-H3-DV (LP), T-K3-OS (NG), T-K4-IN (NG), T-H2S-DV (LP), T-M50 (LP), TK-540P-NIH (NG), T-K4-OS (NG), T-D2-OS (LP), T-H2S-OS (NG), T-H3M-OS (NG), T-H3S-OS (NG), T-H3J-DV (LP), T-K4-OS (LP).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eAnode rod replacement is a plumbing service task performed by licensed plumbers or qualified water heater technicians. Before servicing, shut off the cold water supply and disconnect power or gas to the unit according to the manufacturer's instructions and local code requirements. Use an appropriate socket wrench to remove the existing rod and torque the replacement to the specification listed in the unit's service manual. Inspect the tank port threads and flush the tank as needed before installing the new assembly.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Type\u003c\/strong\u003e: Anode Rod and Holder Kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuel Type Compatibility\u003c\/strong\u003e: Natural Gas, Liquid Propane\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: A.O. SMITH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 100074221\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TAILWIND","offers":[{"title":"Default Title","offer_id":51150229963058,"sku":"100074221","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305989017.jpg?v=1778608153","url":"https:\/\/voomisupply.com\/products\/a-o-smith-100074221-anode-rod-holder-kit","provider":"Voomi Supply","version":"1.0","type":"link"}