{"product_id":"123970-aerco-boiler-and-water-heater-flame-sensor","title":"123970  AERCO Boiler and Water Heater FLAME SENSOR","description":"\u003ch1\u003e123970 AERCO Boiler and Water Heater FLAME SENSOR\u003c\/h1\u003e\n\u003ch2\u003e\n\u003cspan style=\"background-color: rgb(255, 255, 0);\"\u003e\u003cstrong\u003eNormal Stock Item\u003c\/strong\u003e\u003c\/span\u003e \u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eAERCO 123970 is the OEM Flame Sensor\u003c\/strong\u003e used on \u003cstrong\u003eBenchmark (BMK)\u003c\/strong\u003e boilers and \u003cstrong\u003eInnovation\u003c\/strong\u003e water heaters. Grounded search results give us a complete, authoritative profile of the part, including construction, function, and pricing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003e🔧 \u003cstrong\u003eCore Identity \u0026amp; Function\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 123970 \u003cstrong\u003eComponent:\u003c\/strong\u003e Flame Sensor \/ Flame Rod \u003cstrong\u003eOEM:\u003c\/strong\u003e AERCO\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis sensor uses \u003cstrong\u003eflame‑rectification technology\u003c\/strong\u003e to verify the presence of flame during burner operation. It ensures the gas valve stays open \u003cstrong\u003eonly when a stable flame is detected\u003c\/strong\u003e, preventing unburned‑fuel accumulation and unsafe combustion conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Characteristics\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTechnology:\u003c\/strong\u003e Flame rectification\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e Stainless steel rod + high‑temp ceramic insulator\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFunction:\u003c\/strong\u003e Confirms flame presence; triggers shutdown on flame loss\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eEnvironment:\u003c\/strong\u003e High‑temperature condensing boiler chambers\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Benchmark (BMK) boilers, Innovation water heaters\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eUsed in:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAERCO Benchmark boilers\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAERCO Innovation water heaters\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCommercial hydronic heating systems\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eTypical replacement scenarios:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFlame failure lockouts\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eShort cycling due to weak flame signal\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCracked ceramic insulator\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSoot‑covered or oxidized flame rod\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eAERCO 123970 Flame Sensor — OEM flame‑rectification sensor for AERCO Benchmark and Innovation systems. Provides precise flame detection to ensure safe burner operation, prevent unburned‑fuel accumulation, and maintain stable ignition performance. Built with stainless steel and high‑temperature ceramic for long‑life reliability in condensing boiler environments.\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45558656598082,"sku":"123970","price":687.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Pic_large_936f3467-04cc-48b0-b5f0-6d7deae7b58d.webp?v=1739516740","url":"https:\/\/hvacpartstore.com\/products\/123970-aerco-boiler-and-water-heater-flame-sensor","provider":"HVACpartstore","version":"1.0","type":"link"}