{"product_id":"oem-lennox-discharge-air-sensor-99k64","title":"OEM Lennox Discharge Air Sensor — 99K64","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e99K64\u003c\/strong\u003e discharge air sensor monitors the temperature of the conditioned air leaving your furnace or air handler and reports it back to the control board. Lennox systems rely on this reading to modulate blower speed, protect against overheating, and optimize comfort and efficiency throughout each cycle.\u003c\/p\u003e\u003cp\u003eA failing discharge air sensor often produces erratic blower behavior, inaccurate temperature control, nuisance limit trips, or fault codes on the control board. Drifting resistance values from a worn thermistor can cause the system to short-cycle or run longer than necessary, driving up energy costs and reducing comfort.\u003c\/p\u003e\u003cp\u003eInstalling the OEM \u003cstrong\u003e99K64\u003c\/strong\u003e ensures the sensor's resistance curve precisely matches what your Lennox control board expects — something generic thermistors rarely replicate. This factory-authorized part drops in without recalibration and restores accurate supply-air temperature readings so your system runs exactly as engineered.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081090318707,"sku":"LNX-99K64","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-discharge-air-sensor-99k64","provider":"National HVAC Parts","version":"1.0","type":"link"}