{"product_id":"99042-2-aerco-boiler-and-water-heater-dual-element-thermocouple","title":"99042-2 AERCO Boiler and Water Heater Dual Element Thermocouple","description":"\u003ch2\u003e99042-2 AERCO Boiler and Water Heater Dual Element Thermocouple\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"background-color: rgb(255, 255, 0);\"\u003e\u003cb\u003e\u003cspan style=\"font-size: large; background-color: rgb(255, 255, 0);\"\u003eNormal Stocking Item in Our Warehouse \u003c\/span\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eAERCO 99042‑2 is the OEM Dual‑Element Thermocouple Assembly\u003c\/strong\u003e used in AERCO boilers and water heaters. This part provides \u003cstrong\u003eredundant, high‑accuracy temperature sensing\u003c\/strong\u003e for critical combustion and hydronic control functions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAERCO 99042‑2 Dual‑Element Thermocouple — OEM dual‑sensor temperature probe for AERCO boilers and water heaters. Provides redundant, high‑accuracy temperature feedback for combustion safety, modulation control, and hydronic system protection. Engineered for high‑temperature reliability and direct‑fit replacement in AERCO assemblies.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBelow is the complete, grounded, technician‑ready profile.\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 99042‑2 \u003cstrong\u003eComponent:\u003c\/strong\u003e Dual‑Element Thermocouple \u003cstrong\u003eOEM:\u003c\/strong\u003e AERCO\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis sensor contains \u003cstrong\u003etwo thermocouple elements in one assembly\u003c\/strong\u003e, giving the controller \u003cstrong\u003etwo independent temperature signals\u003c\/strong\u003e for:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCombustion safety monitoring\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eTemperature‑limit protection\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBurner modulation feedback\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRedundant sensing for fault‑tolerant operation\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eDual‑element thermocouples are used in AERCO systems where \u003cstrong\u003eprecision and safety redundancy\u003c\/strong\u003e are required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003e📐 \u003cstrong\u003eTechnical Characteristics\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eWhile individual listings vary, grounded distributor data for AERCO dual‑element thermocouples confirms:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Dual thermocouple\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e High‑temperature stainless probe\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eOutput:\u003c\/strong\u003e Millivolt signal proportional to temperature\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eUse Case:\u003c\/strong\u003e High‑efficiency boilers \u0026amp; water heaters\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e Threaded or compression‑fit depending on model variant\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThis part is functionally similar to AERCO 61056 (dual thermocouple), but \u003cstrong\u003e99042‑2 is used on different AERCO platforms\u003c\/strong\u003e and assemblies.\u003c\/span\u003e\u003c\/p\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 commercial boilers\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eAERCO commercial water heaters\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCombustion chambers requiring redundant temperature feedback\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSafety‑limit and modulation circuits\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\u003eTemperature drift\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIntermittent or unstable readings\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eControl‑system lockouts\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePreventive maintenance\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45558666002498,"sku":"99042-2","price":590.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2025-09-11200515.png?v=1757646346","url":"https:\/\/hvacpartstore.com\/products\/99042-2-aerco-boiler-and-water-heater-dual-element-thermocouple","provider":"HVACpartstore","version":"1.0","type":"link"}