{"product_id":"oem-lennox-defrost-thermostat-102438-01-65w68","title":"OEM Lennox Defrost Thermostat 102438-01 — 65W68","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e65W68\u003c\/strong\u003e (factory number 102438-01) is a defrost thermostat used on Lennox heat pump systems. Mounted to the outdoor coil, it senses coil temperature and signals the defrost control board to initiate or terminate a defrost cycle, preventing ice buildup that would otherwise choke airflow and cripple heating performance in cold weather.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e When the \u003cstrong\u003e65W68\u003c\/strong\u003e fails or drifts out of calibration, you may notice the outdoor unit icing over and never defrosting, defrost cycles that run too long or too frequently, reduced heating output, or the compressor short-cycling. A thermostat stuck open or closed is a frequent culprit behind poor heat-pump heating in winter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox engineers this defrost thermostat to open and close at exact temperature setpoints matched to their coil geometry and defrost logic. Generic substitutes with different trip points can cause premature or delayed defrost, wasting energy and stressing the compressor. Choosing the factory \u003cstrong\u003e65W68\u003c\/strong\u003e guarantees correct calibration, proper fit, and reliable defrost operation for your Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081131508083,"sku":"LNX-65W68","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-thermostat-nonprogrammable-LNX-65W68.jpg?v=1783760071","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-defrost-thermostat-102438-01-65w68","provider":"National HVAC Parts","version":"1.0","type":"link"}