{"product_id":"20539","title":"Ignition Module – Replaces Fenwal 35-705701-103 – NBK-20539","description":"\u003ch2\u003eNBK-20539 – Ignition Module – NBK\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eNBK-20539 Ignition Module\u003c\/strong\u003e is a dependable OEM-equivalent replacement designed for HVAC ignition control applications. This module helps ensure reliable burner ignition and consistent heating system performance. It is a direct replacement for the widely used \u003cstrong\u003eFenwal 35-705701-103\u003c\/strong\u003e ignition module.\u003c\/p\u003e\n\u003cp\u003eBuilt to meet or exceed OEM specifications, the NBK-20539 provides a precise fit and dependable operation, making it an ideal solution for HVAC technicians servicing residential and light commercial heating equipment.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-Compatible Replacement:\u003c\/strong\u003e Direct replacement for Fenwal 35-705701-103\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Ignition Control:\u003c\/strong\u003e Supports safe and consistent burner startup\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Electronics:\u003c\/strong\u003e Built for long service life in HVAC environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Fit Design:\u003c\/strong\u003e Helps simplify installation and reduce downtime\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 20539\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 810069184296\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Ignition Module \/ Ignition Controls \/ HVAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Brand:\u003c\/strong\u003e Fenwal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e HVAC ignition control replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEquivalent To\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFenwal:\u003c\/strong\u003e 35-705701-103\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose the NBK-20539?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNBK-20539\u003c\/strong\u003e is a trusted ignition module replacement for HVAC professionals seeking OEM-level compatibility and dependable system performance. It helps restore proper ignition function and supports safe heating operation.\u003c\/p\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect all power sources before servicing ignition control components.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement module matches the original part number and wiring configuration.\u003c\/li\u003e\n\u003cli\u003eInspect ignition leads and flame sensors for wear during installation.\u003c\/li\u003e\n\u003cli\u003eTest system startup after installation to confirm proper burner ignition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cp\u003eFlame Sensors, Hot Surface Igniters, Gas Valves, HVAC Control Boards\u003c\/p\u003e","brand":"Fenwal","offers":[{"title":"Default Title","offer_id":52401227399536,"sku":"SO-20539","price":330.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/4463\/3444\/files\/20539-35-705701-103.webp?v=1770333623","url":"https:\/\/total-hearth.com\/products\/20539","provider":"Total Hearth","version":"1.0","type":"link"}