{"product_id":"oem-lennox-flame-rollout-switch-99k63","title":"OEM Lennox Flame Rollout Switch — 99K63","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e99K63\u003c\/strong\u003e flame rollout switch is a critical safety device that detects flames or excessive heat escaping the burner compartment — a condition typically caused by a blocked heat exchanger, restricted venting, or a failing draft inducer. When abnormal heat is sensed, the switch instantly cuts power to the gas valve to prevent fire and equipment damage.\u003c\/p\u003e\u003cp\u003eA tripped or failed rollout switch usually presents as a furnace that lights briefly then shuts down, no heat output, or a manual reset button that won't stay set. Because this switch guards against dangerous flame rollout, repeated trips should always be diagnosed by a qualified technician before replacement.\u003c\/p\u003e\u003cp\u003eUsing the OEM \u003cstrong\u003e99K63\u003c\/strong\u003e is essential for safety: it is calibrated to the exact trip temperature Lennox specifies for your furnace model. Generic switches with incorrect temperature ratings can either nuisance-trip or, worse, fail to trip when needed. This factory part restores proper protection and guarantees a precise fit and reliable reset function.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081090351475,"sku":"LNX-99K63","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-limit-switch-rollout-LNX-99K63.jpg?v=1783760989","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-flame-rollout-switch-99k63","provider":"National HVAC Parts","version":"1.0","type":"link"}