{"product_id":"oem-lennox-pressure-switch-with-bracket-49l92","title":"OEM Lennox Pressure Switch with Bracket — 49L92","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e49L92\u003c\/strong\u003e pressure switch with bracket is a critical safety component that verifies proper venting and combustion airflow before your furnace ignites. It monitors the negative pressure created by the draft inducer motor and confirms that flue gases are being safely exhausted. If airflow is blocked or the inducer fails, the switch opens and prevents the burners from firing, protecting your home from dangerous flue gas buildup. The included mounting bracket ensures correct positioning and factory-spec fit within your Lennox unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Furnace that ignites then shuts down, no ignition at all, a blower that runs continuously, or a control board flashing a pressure switch fault code. A stuck-open or drifting switch is a frequent cause of intermittent no-heat calls.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox pressure switches are calibrated to a specific trip point for your furnace model. An aftermarket switch with the wrong pressure rating can allow unsafe operation or cause nuisance lockouts. The OEM \u003cstrong\u003e49L92\u003c\/strong\u003e guarantees the exact calibration, connector, and bracket geometry your Lennox equipment was engineered for.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081104146803,"sku":"LNX-49L92","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-draft-inducer-LNX-49L92.jpg?v=1783762971","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-pressure-switch-with-bracket-49l92","provider":"National HVAC Parts","version":"1.0","type":"link"}