{"product_id":"oem-lennox-pressure-switch-38m65","title":"OEM Lennox Pressure Switch — 38M65","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e38M65\u003c\/strong\u003e pressure switch is a critical safety component in your Lennox furnace. It monitors the negative pressure created by the inducer (draft) motor and confirms that combustion gases are venting properly before the control board allows the burners to ignite. Designed to the exact pressure trip point Lennox engineered for your model, it protects against unsafe operation caused by blocked flues, condensate backups, or a failing inducer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms include:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFurnace ignites then shuts down on a lockout code\u003c\/li\u003e\n\u003cli\u003eInducer motor runs but the burners never light\u003c\/li\u003e\n\u003cli\u003eRepeated pressure switch fault codes on the control board\u003c\/li\u003e\n\u003cli\u003eIntermittent no-heat calls, especially on cold starts\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBecause the \u003cstrong\u003e38M65\u003c\/strong\u003e is a safety device, using the exact OEM part matters. Aftermarket switches with the wrong pressure setpoint can either nuisance-trip or, worse, allow the furnace to run when it shouldn't. This factory replacement guarantees the correct trip pressure, connector fit, and mounting for your Lennox equipment, restoring reliable, code-compliant ignition and shutdown protection.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081107554675,"sku":"LNX-38M65","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-LNX-38M65.jpg?v=1783763038","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-pressure-switch-38m65","provider":"National HVAC Parts","version":"1.0","type":"link"}