{"product_id":"oem-lennox-102857-25-limit-control-205f-19f78","title":"OEM Lennox 102857-25 Limit Control (205F) — 19F78","description":"\u003cp\u003eThe \u003cstrong\u003eLennox 19F78\u003c\/strong\u003e (OEM reference 102857-25) is a genuine OEM high-limit control switch rated to open at 205°F, protecting your Lennox furnace from dangerous overheating conditions. When the heat exchanger reaches this threshold, the limit control interrupts the burner circuit, preventing equipment damage and potential safety hazards. Symptoms of a failed limit control include the furnace shutting off prematurely, failing to ignite, or running continuously without heat — replace with this exact OEM part to restore safe, reliable operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081051554163,"sku":"LNX-19F78","price":19.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-102857-25-limit-control-205f-19f78","provider":"National HVAC Parts","version":"1.0","type":"link"}