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Replacing a carbon-fouled or oxidized 90 degree flame sensor is standard practice for restoring peak furnace performance and ensuring contractor-grade reliability
this unit features a 30A inductive rating and a 24V AC coil
To prevent slippage
The forged brass body eliminates the risk of porosity and cracking common in lower-quality imports
Lennox X4148 Temperature Sensor Replacing a carbon-fouled or oxidizedThe Lennox X4148 Temperature Sensor is a high precision NTC (Negative Temperature Coefficient) thermistor designed for critical outdoor ambient monitoring. Engineered specifically for integration with Lennox Comfort Sense 5000 thermostats, including the X4146 and X4147 models, this sensor is essential for dual fuel HVAC systems. It provides the real time thermal data required for accurate staging and auxiliary heat lockout, ensuring the system toggles
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