{"product_id":"oem-lennox-pressure-switch-w-bracket-93w94","title":"OEM Lennox Pressure Switch w\/ Bracket — 93W94","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e93W94\u003c\/strong\u003e pressure switch — supplied complete with its mounting bracket — is a safety device that confirms proper venting and draft before your furnace ignites. It senses the negative pressure created by the draft inducer, verifying that combustion gases can be safely exhausted, and only then allows the ignition sequence to proceed. The included bracket ensures correct positioning and a factory-accurate install.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e When the \u003cstrong\u003e93W94\u003c\/strong\u003e switch fails or clogs, the furnace may fail to ignite, short cycle, lock out on a pressure-switch fault code, or refuse to start entirely on a call for heat. A blocked hose, cracked diaphragm, or switch stuck open are the typical causes of a furnace that spins up the inducer but never lights.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Pressure switches are calibrated to a specific trip point measured in inches of water column, and a mismatched aftermarket switch can allow unsafe operation or cause false lockouts on Lennox equipment. The factory-original \u003cstrong\u003e93W94\u003c\/strong\u003e with bracket guarantees the correct pressure rating and mounting for safe, reliable venting. In stock and ships same day.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081091236211,"sku":"LNX-93W94","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-93W94.jpg?v=1783762956","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-pressure-switch-w-bracket-93w94","provider":"National HVAC Parts","version":"1.0","type":"link"}