Lennox 95M54 Thermostat
The Lennox 95M54 Thermostat is a heavy-duty defrost thermostat sensor engineered specifically for technical reliability in commercial HVAC systems and industrial refrigeration units. This single-pole single-throw (SPST) component serves as a critical defrost control, effectively managing crankcase heater cycles or defrost termination to prevent coil freeze-up in air conditioners and heat pumps. Built with a 40-inch lead for versatile mounting, it provides precise opens at 70°F / closes at 50°F switching logic. As a genuine OEM Lennox part (replaces 100503-01), this sensor ensures seamless communication with the control board, maintaining system efficiency in demanding environments. For service technicians, the Lennox 95M54 offers a direct-fit solution that eliminates the troubleshooting guesswork associated with universal alternatives, ensuring that defrost cycles initiate and terminate at exact thermal setpoints for maximum equipment protection.
Key Technical Benefits
- Precise Thermal Switching: Operates with a specific 70°F open / 50°F close range to ensure accurate defrost termination.
- OEM Compatibility: Designed specifically for Lennox HVAC equipment, including heat pumps and packaged units, to maintain factory specifications.
- Extended Installation Reach: Features 40-inch leads, allowing for flexible positioning on suction lines or evaporator coils.
- Industrial Durability: The SPST thermostat sensor is built to withstand high-vibration and moisture-heavy environments common in outdoor condensing units.
- Crankcase Management: Reliably energizes and de-energizes heaters to prevent liquid slugging and compressor damage.
Common Questions & Troubleshooting
What does the Open 70 / Close 50 logic mean for my system?
In a defrost application, the 95M54 will close its circuit when the temperature drops to 50°F to allow a defrost cycle or heater activation. Once the temperature reaches 70°F, the circuit opens, terminating the defrost cycle to prevent overheating the coil.
Will this replace the Lennox 100503-01 sensor?
Yes, the 95M54 is the direct OEM replacement for part number 100503-01. It is electrically and physically identical, meeting the same SPST switching requirements.
Can this sensor be used on other brands like GE?
While designed for Lennox, this defrost thermostat sensor is frequently cross-referenced for use in select GE package units and air conditioners that require the same 40-inch lead and thermal operating range. Confirm your specific model before installation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Lennox 95M54 Thermostat
The Lennox 95M54 Thermostat is a heavy-duty defrost thermostat sensor engineered specifically for technical reliability in commercial HVAC systems and industrial refrigeration units. This single-pole single-throw (SPST) component serves as a critical defrost control, effectively managing crankcase heater cycles or defrost termination to prevent coil freeze-up in air conditioners and heat pumps. Built with a 40-inch lead for versatile mounting, it provides precise opens at 70°F / closes at 50°F switching logic. As a genuine OEM Lennox part (replaces 100503-01), this sensor ensures seamless communication with the control board, maintaining system efficiency in demanding environments. For service technicians, the Lennox 95M54 offers a direct-fit solution that eliminates the troubleshooting guesswork associated with universal alternatives, ensuring that defrost cycles initiate and terminate at exact thermal setpoints for maximum equipment protection.
Key Technical Benefits
- Precise Thermal Switching: Operates with a specific 70°F open / 50°F close range to ensure accurate defrost termination.
- OEM Compatibility: Designed specifically for Lennox HVAC equipment, including heat pumps and packaged units, to maintain factory specifications.
- Extended Installation Reach: Features 40-inch leads, allowing for flexible positioning on suction lines or evaporator coils.
- Industrial Durability: The SPST thermostat sensor is built to withstand high-vibration and moisture-heavy environments common in outdoor condensing units.
- Crankcase Management: Reliably energizes and de-energizes heaters to prevent liquid slugging and compressor damage.
Common Questions & Troubleshooting
What does the Open 70 / Close 50 logic mean for my system?
In a defrost application, the 95M54 will close its circuit when the temperature drops to 50°F to allow a defrost cycle or heater activation. Once the temperature reaches 70°F, the circuit opens, terminating the defrost cycle to prevent overheating the coil.
Will this replace the Lennox 100503-01 sensor?
Yes, the 95M54 is the direct OEM replacement for part number 100503-01. It is electrically and physically identical, meeting the same SPST switching requirements.
Can this sensor be used on other brands like GE?
While designed for Lennox, this defrost thermostat sensor is frequently cross-referenced for use in select GE package units and air conditioners that require the same 40-inch lead and thermal operating range. Confirm your specific model before installation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Lennox 95M54 Thermostat is a heavy-duty defrost thermostat sensor engineered specifically for technical reliability in commercial HVAC systems and industrial refrigeration units. This single-pole single-throw (SPST) component serves as a critical defrost control, effectively managing crankcase heater cycles or defrost termination to prevent coil freeze-up in air conditioners and heat pumps. Built with a 40-inch lead for versatile mounting, it provides precise opens at 70°F / closes at 50°F switching logic. As a genuine OEM Lennox part (replaces 100503-01), this sensor ensures seamless communication with the control board, maintaining system efficiency in demanding environments. For service technicians, the Lennox 95M54 offers a direct-fit solution that eliminates the troubleshooting guesswork associated with universal alternatives, ensuring that defrost cycles initiate and terminate at exact thermal setpoints for maximum equipment protection.
Key Technical Benefits
- Precise Thermal Switching: Operates with a specific 70°F open / 50°F close range to ensure accurate defrost termination.
- OEM Compatibility: Designed specifically for Lennox HVAC equipment, including heat pumps and packaged units, to maintain factory specifications.
- Extended Installation Reach: Features 40-inch leads, allowing for flexible positioning on suction lines or evaporator coils.
- Industrial Durability: The SPST thermostat sensor is built to withstand high-vibration and moisture-heavy environments common in outdoor condensing units.
- Crankcase Management: Reliably energizes and de-energizes heaters to prevent liquid slugging and compressor damage.
Common Questions & Troubleshooting
What does the Open 70 / Close 50 logic mean for my system?
In a defrost application, the 95M54 will close its circuit when the temperature drops to 50°F to allow a defrost cycle or heater activation. Once the temperature reaches 70°F, the circuit opens, terminating the defrost cycle to prevent overheating the coil.
Will this replace the Lennox 100503-01 sensor?
Yes, the 95M54 is the direct OEM replacement for part number 100503-01. It is electrically and physically identical, meeting the same SPST switching requirements.
Can this sensor be used on other brands like GE?
While designed for Lennox, this defrost thermostat sensor is frequently cross-referenced for use in select GE package units and air conditioners that require the same 40-inch lead and thermal operating range. Confirm your specific model before installation.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
