{"product_id":"oem-lennox-pressure-switch-w-bracket-24l51","title":"OEM Lennox Pressure Switch w\/ Bracket — 24L51","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e24L51\u003c\/strong\u003e pressure switch with mounting bracket is a critical safety component in your Lennox furnace. It monitors the vacuum created by the inducer motor to confirm proper venting and airflow before the ignition sequence begins. If adequate draft isn't detected, the switch prevents the furnace from firing — protecting your home from unsafe combustion and dangerous flue-gas conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e When the \u003cstrong\u003e24L51\u003c\/strong\u003e fails or sticks, you may experience a furnace that ignites and immediately shuts down (short cycling), a blower that runs without heat, repeated lockouts, or fault codes on the control board indicating an open or stuck pressure switch. Cracked hoses, blocked ports, or a worn diaphragm are frequent culprits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox pressure switches are calibrated to specific trip points matched to your furnace's inducer and venting design. Using a generic aftermarket switch with the wrong pressure rating can cause nuisance faults or, worse, allow unsafe operation. This factory-spec \u003cstrong\u003e24L51\u003c\/strong\u003e includes the correct bracket for a proper, direct-fit installation and reliable safety performance.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081112240499,"sku":"LNX-24L51","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-24L51.jpg?v=1783762941","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-pressure-switch-w-bracket-24l51","provider":"National HVAC Parts","version":"1.0","type":"link"}