{"product_id":"oem-lennox-104549-09-pressure-switch-2-stg-74-41-14a51","title":"OEM Lennox 104549-09 Pressure Switch 2-Stg-.74\/-.41 — 14A51","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 14A51\u003c\/strong\u003e (OEM reference 104549-09) is a genuine two-stage pressure switch rated at -0.74\/-0.41 inches WC, built to confirm adequate negative pressure from the inducer motor before the Lennox furnace proceeds through its ignition sequence. A faulty switch can cause symptoms such as continuous lockout codes, short cycling, or a furnace that powers on but fails to produce heat. This OEM part is a direct factory replacement designed for specific Lennox two-stage furnace models, ensuring precise pressure sensing and safe system operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081039659379,"sku":"LNX-14A51","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-104549-09-pressure-switch-2-stg-74-41-14a51","provider":"National HVAC Parts","version":"1.0","type":"link"}