Lennox 33F37 – High-Precision Sensing Probe, 0.114" Diameter, 18 AWG Spade Terminal, 0.344" Locating Dimension
The Lennox 33F37 Sensing Probe is a factory-authorized OEM replacement part engineered for precise temperature or flame detection within HVAC systems. Designed specifically to meet Lennox performance standards, this probe ensures responsive system feedback, enhancing both efficiency and safety in heating and air conditioning equipment.
With a 0.114-inch diameter stainless steel sensing element, the probe offers durability and rapid thermal response, even in high-heat or variable-temperature environments. Its 18 AWG lead wire provides excellent conductivity and resistance to wear, while the spade terminal connection enables quick installation and secure contact with compatible control boards or ignition systems.
The 0.344-inch locating dimension ensures the probe seats correctly and maintains optimal sensing alignment. This precise fit helps avoid signal errors and supports consistent, long-lasting system operation. Whether it’s monitoring flame presence in a gas furnace or regulating thermal input in a heat exchanger, this component plays a critical role in system control and protection.
Product Specifications:
- Model: Lennox 33F37
- Application: Temperature or flame sensing
- Sensing Element Diameter: 0.114 inches
- Wire Gauge: 18 AWG
- Terminal Type: Spade connector
- Locating Dimension: 0.344 inches
- Lead Type: Insulated for high-temperature applications
- Compatibility: Fits select Lennox furnaces and HVAC units
Common Uses:
- Gas furnace flame sensor replacement
- Temperature probe for ignition control systems
- Component diagnostics and system reset
- OEM maintenance and repair
Backed by Lennox’s reputation for quality and performance, the 33F37 Sensing Probe is a critical component for HVAC systems requiring accurate sensor feedback. Replace your worn or malfunctioning sensor with this genuine Lennox part to restore proper operation and avoid costly system faults.
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