{"product_id":"crown-engineering-21821-hastings-electrode","title":"Crown Engineering 21821 Hastings Electrode","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CROWN ENGINEERING 21821 is a Hastings replacement electrode designed for use in oil-fired and gas-fired burner systems. Electrodes serve a critical function in the ignition sequence, generating the high-voltage spark that ignites the fuel-air mixture at the burner head. This part is installed by licensed HVAC technicians and burner service specialists during routine maintenance or when the existing electrode shows signs of wear, cracking, or fouling that degrades ignition reliability.\u003c\/p\u003e\n\u003cp\u003eThe 21821 is suited for residential and light commercial heating applications where Hastings-style electrodes are specified. It fits into burner assemblies that require periodic electrode replacement as part of a standard tune-up or combustion service. Installers working on oil burner systems will recognize the Hastings electrode form factor as a common service item across a range of heating equipment configurations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHastings-style electrode design for compatibility with burner assemblies requiring this form factor\u003c\/li\u003e\n  \u003cli\u003eBuilt for high-voltage ignition duty in oil-fired and gas-fired burner systems\u003c\/li\u003e\n  \u003cli\u003eOEM-style replacement suitable for routine maintenance and service calls\u003c\/li\u003e\n  \u003cli\u003eCompact electrode construction supports precise spark gap positioning at the burner head\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement electrode for burner assemblies specifying the Hastings electrode form factor in residential and light commercial heating systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eElectrode replacement is performed by qualified HVAC technicians or oil burner service specialists. Before servicing, shut down the burner system completely and disconnect electrical power to the unit. Handle the electrode carefully to avoid chipping the ceramic insulator, which can cause arcing faults. Verify spark gap positioning against the burner manufacturer's service documentation before returning the system to operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrode Type\u003c\/strong\u003e: Hastings\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: CROWN ENGINEERING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 21821\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CROWN ENGINEERING","offers":[{"title":"Default Title","offer_id":68093359849778,"sku":"21821","price":43.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/48af80d0dd3168ce3018674abcbda7ca.jpg?v=1793235409","url":"https:\/\/voomisupply.com\/products\/crown-engineering-21821-hastings-electrode","provider":"Voomi Supply","version":"1.0","type":"link"}