{"product_id":"20575","title":"Vacuum Switch (No Hardware) - Whitfield NBK-20575","description":"\u003ch2\u003eVacuum Switch (No Hardware)\u003c\/h2\u003e\n\u003cp\u003eMaintain safe operation of your hearth appliance with this replacement vacuum switch, equivalent to Whitfield OEM part 12145903. Designed for compatible pellet and hearth heating systems, this switch monitors proper airflow and draft conditions to ensure safe startup and operation.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquivalent to Whitfield OEM vacuum switch\u003c\/li\u003e\n\u003cli\u003eSwitch only – mounting hardware not included\u003c\/li\u003e\n\u003cli\u003eSupports proper airflow and draft verification\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement for Whitfield part number 12145903\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM: Whitfield\u003c\/li\u003e\n\u003cli\u003eReplaces OEM: 12145903\u003c\/li\u003e\n\u003cli\u003eEquivalent To: 12145903\u003c\/li\u003e\n\u003cli\u003eUPC: Not available\u003c\/li\u003e\n\u003cli\u003eSKU: 20575\u003c\/li\u003e\n\u003cli\u003eCategory: Hearth Parts (Switch)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDirect Replacement For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWHITFIELD 12145903\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose This Replacement\u003c\/h3\u003e\n\u003cp\u003eA malfunctioning vacuum switch can prevent proper ignition or shut down system operation as a safety precaution. This OEM-equivalent replacement helps restore accurate draft sensing and supports safe, reliable performance in Whitfield hearth appliances.\u003c\/p\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect electrical power before servicing hearth appliance components.\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with your specific Whitfield model prior to installation.\u003c\/li\u003e\n\u003cli\u003eInspect vacuum tubing for cracks, blockages, or wear during replacement.\u003c\/li\u003e\n\u003cli\u003eEnsure airtight hose connections to prevent false pressure readings.\u003c\/li\u003e\n\u003cli\u003eTest startup sequence to confirm proper switch engagement and system operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cp\u003eWhitfield pressure switches, pellet stove vacuum tubing, hearth control boards, combustion blower assemblies\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eSpecial Order Notice:\u003c\/strong\u003e This item requires an additional 2–3 business days to process before shipping.\u003c\/em\u003e\u003c\/p\u003e","brand":"Whitfield","offers":[{"title":"Default Title","offer_id":52401225269616,"sku":"SO-20575","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/4463\/3444\/files\/20575-12145903-2-1.webp?v=1771286399","url":"https:\/\/total-hearth.com\/products\/20575","provider":"Total Hearth","version":"1.0","type":"link"}