{"product_id":"oem-lennox-pressure-switch-80w53","title":"OEM Lennox Pressure Switch — 80W53","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e80W53\u003c\/strong\u003e pressure switch is a critical safety component in your Lennox gas furnace. It senses negative pressure created by the draft inducer and proves that combustion gases are being vented properly before the control board allows ignition. Calibrated to a specific trip point, the \u003cstrong\u003e80W53\u003c\/strong\u003e guards against dangerous flue blockages and inducer failures.\u003c\/p\u003e\u003cp\u003eA failing \u003cstrong\u003e80W53\u003c\/strong\u003e commonly causes the furnace to lock out and refuse to light, throw a pressure switch error code, or short cycle as the switch opens and closes erratically. Cracked hoses, a stuck diaphragm, or a switch drifting out of calibration are typical failure modes that leave you without heat.\u003c\/p\u003e\u003cp\u003eBecause pressure switches are calibrated to an exact water-column rating, using the OEM Lennox \u003cstrong\u003e80W53\u003c\/strong\u003e is essential — an incorrect switch can allow the furnace to fire unsafely or prevent it from running at all. Genuine Lennox replacements guarantee the correct set point and connections for reliable, safe operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081094316403,"sku":"LNX-80W53","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-80W53.jpg?v=1783763088","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-pressure-switch-80w53","provider":"National HVAC Parts","version":"1.0","type":"link"}