{"product_id":"oem-lennox-limit-switch-25j30","title":"OEM Lennox Limit Switch — 25J30","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e25J30\u003c\/strong\u003e limit switch is a temperature-activated safety control that monitors the heat exchanger and blower compartment of your Lennox furnace. If temperatures climb past a safe threshold, the switch opens and shuts off the burners to prevent overheating, protecting both your equipment and your home.\u003c\/p\u003e\u003cp\u003eA failing limit switch commonly causes short cycling, where the furnace fires and shuts down repeatedly, or a no-heat condition when the switch is stuck open. Nuisance lockouts, a furnace that runs the blower but won't ignite, and inconsistent heating are all signs the switch may be out of calibration or worn.\u003c\/p\u003e\u003cp\u003eBecause the OEM Lennox \u003cstrong\u003e25J30\u003c\/strong\u003e is calibrated to the exact trip and reset temperatures your furnace was designed around, using the factory part is critical — an incorrectly rated aftermarket switch can either fail to protect the heat exchanger or trip prematurely, leaving you without heat. Restore proper, safe operation with the correct OEM control. In stock and ships same day.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081111781747,"sku":"LNX-25J30","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-25J30.jpg?v=1783762488","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-25j30","provider":"National HVAC Parts","version":"1.0","type":"link"}