{"product_id":"black-thermistor-exhaust-sensing-probe-esp-3-20-11744","title":"Black ESP Thermistor Probe | Exhaust Sensing Probe for Pellet Stoves | Part #3-20-11744","description":"\u003ch3\u003e\u003cstrong\u003eBlack ESP Thermistor Probe – 3-20-11744 | Exhaust Sensing Probe | OEM Replacement for Pellet Stoves\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eKeep your pellet stove heating efficiently with the \u003cstrong\u003eBlack Exhaust Sensing Probe (ESP)\u003c\/strong\u003e, part \u003cstrong\u003e3-20-11744\u003c\/strong\u003e. This thermistor-based sensor continuously monitors exhaust temperature to regulate burn rate, stabilize room heat, and optimize fuel usage. It is the OEM replacement for a wide range of Harman systems and other leading pellet stoves.\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Temperature Control\u003c\/strong\u003e – Helps maintain room temperature within 1°F of the setpoint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-Grade Replacement\u003c\/strong\u003e – Directly replaces legacy part \u003cstrong\u003e1-00-00744\u003c\/strong\u003e for consistent, reliable performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect Identification\u003c\/strong\u003e – Black lead wire denotes the proper ESP version for compatible models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency Booster\u003c\/strong\u003e – Accurately regulates burn rate to improve heat output and reduce pellet consumption\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction\u003c\/strong\u003e – Built to withstand harsh exhaust environments for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3-20-11744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e 1-00-00744\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Exhaust Sensing Probe (thermistor)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead\/Wire Color:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Monitors exhaust temperature for control board regulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 652174647279\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold As:\u003c\/strong\u003e Individual probe\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarman P-Series:\u003c\/strong\u003e P61, P61A, P68\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarman Accentra:\u003c\/strong\u003e Accentra Cast Pellet Stove, Accentra Pellet Insert (multiple sizes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarman XXV:\u003c\/strong\u003e XXV Cast Pellet Stove\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarman Advance \/ 44 Magnum:\u003c\/strong\u003e Advance, 44 Magnum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarman Invincible:\u003c\/strong\u003e Invincible Insert, Invincible RS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHarman PC45:\u003c\/strong\u003e PC45 Pellet Stove\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentral Heat:\u003c\/strong\u003e PF100 Pellet Furnace, BA-100 Pellet Furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoal \u0026amp; Other:\u003c\/strong\u003e DVC-500 Direct Vent Coal Stove\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eNote:\u003c\/em\u003e The table of Harman assemblies and color variants (e.g., Mojave Red, Forest Green, Porcelain finishes) in your listing corresponds to units that use this Black ESP probe. If unsure, match by part number or consult your stove's manual.\u003c\/p\u003e\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePairs well with:\u003c\/span\u003e\u003ca href=\"https:\/\/total-hearth.com\/collections\/pellet-stove-parts\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ePellet Parts\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\u003ch2\u003e\u003cstrong\u003eWhy Replace Your ESP?\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eA failing ESP can cause erratic operation, poor temperature regulation, and higher pellet usage. Replacing it restores accurate feedback to the control board so your stove maintains steady heat and peak efficiency. \u003c\/p\u003e","brand":"Pellet Stove","offers":[{"title":"Default Title","offer_id":56929082212692,"sku":"4-NBK-420","price":25.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1067\/7698\/5940\/files\/hht76.jpg?v=1787841184","url":"https:\/\/total-hearth.shop\/products\/black-thermistor-exhaust-sensing-probe-esp-3-20-11744","provider":"total-hearth.shop","version":"1.0","type":"link"}