{"product_id":"oem-lennox-pressure-switch-26w83","title":"OEM Lennox Pressure Switch — 26W83","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e26W83\u003c\/strong\u003e pressure switch is the draft-proving safety control in your Lennox furnace, confirming that the inducer is pulling proper venting before ignition is allowed. It senses the pressure differential created by the draft inducer and closes its contacts only when airflow is adequate, giving the control board the green light to open the gas valve.\u003c\/p\u003e\u003cp\u003eSigns of a failing \u003cstrong\u003e26W83\u003c\/strong\u003e include a furnace that cycles the inducer without firing, a burner that lights and then quickly drops out, or a persistent pressure-switch lockout on the control board. Typical causes are a stuck or ruptured diaphragm, obstructed sensing tubing, condensate collecting in the port, or contacts that no longer make a reliable connection.\u003c\/p\u003e\u003cp\u003eBecause each Lennox pressure switch is calibrated to a specific set point for its inducer and venting arrangement, fitting the correct OEM part is essential. A mismatched aftermarket switch can allow combustion under unsafe draft or cause false lockouts that leave you without heat. The factory \u003cstrong\u003e26W83\u003c\/strong\u003e provides the exact trip pressure Lennox designed, safeguards your warranty, and keeps this vital safety circuit performing as intended.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081110995315,"sku":"LNX-26W83","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-26W83.jpg?v=1783763017","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-pressure-switch-26w83","provider":"National HVAC Parts","version":"1.0","type":"link"}