{"product_id":"oem-lennox-limit-switch-87f16","title":"OEM Lennox Limit Switch — 87F16","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e87F16\u003c\/strong\u003e limit switch is a temperature-sensing safety device that guards your Lennox furnace against overheating. Mounted near the heat exchanger, it continuously senses supply-air temperature and opens the burner circuit the moment conditions exceed the safe limit. This protects the heat exchanger from cracking and keeps combustion operating within Lennox's design parameters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A failing \u003cstrong\u003e87F16\u003c\/strong\u003e often causes the furnace to short-cycle, produce little or no heat, or trip repeatedly on the limit even when airflow is normal. You may also see the blower running nonstop as the control tries to shed heat. Contacts that stick open or closed are a clear sign the switch needs replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Limit switches are calibrated to a precise trip temperature, and a generic substitute rarely matches Lennox's specification. Installing the OEM \u003cstrong\u003e87F16\u003c\/strong\u003e ensures the switch opens and resets at the correct thresholds, seats properly in the original bracket, and integrates cleanly with your furnace's safety sequence — preserving both performance and your equipment warranty.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081093103987,"sku":"LNX-87F16","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-limit-switch-snap-disc-LNX-87F16.jpg?v=1783762627","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-87f16","provider":"National HVAC Parts","version":"1.0","type":"link"}