{"product_id":"oem-lennox-cad-cell-flame-sensor-for-beckett-burner-37h35","title":"OEM Lennox Cad Cell Flame Sensor for Beckett Burner — 37H35","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e37H35\u003c\/strong\u003e is a cadmium-sulfide (cad cell) flame sensor for Beckett oil burner assemblies used in Lennox oil-fired furnaces and boilers. This light-sensitive cell watches for the presence of flame and signals the primary control to keep the burner running — or to lock out on safety if no flame is detected. It is a critical component of your oil heat system's flame-proving and safety circuit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A dirty, aged, or failed cad cell causes nuisance lockouts, burner failure to stay lit, delayed ignition, or the system dropping out shortly after startup. Soot buildup on the cell face and cracked leads are frequent culprits behind intermittent flame-sensing faults.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Flame sensing is a life-safety function, and the resistance and light-response characteristics of the cad cell must match what the Beckett primary control expects. The authentic Lennox \u003cstrong\u003e37H35\u003c\/strong\u003e ensures correct sensitivity, proper fit into the burner housing, and reliable safe operation — protecting both your equipment and your home.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081131737459,"sku":"LNX-37H35","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-flame-sensor-straight-LNX-37H35.jpg?v=1783759635","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-cad-cell-flame-sensor-for-beckett-burner-37h35","provider":"National HVAC Parts","version":"1.0","type":"link"}