
Lennox 12L24 Expansion Valve
The Lennox 12L24 Expansion Valve is a critical OEM thermostatic expansion valve (TXV) designed specifically for R410A refrigerant systems. This metering device regulates the precise flow of liquid refrigerant into the evaporator coil, maintaining the optimal superheat required for high-efficiency cooling performance. Built to handle the higher operating pressures of HFC-410A, the 12L24 (also identified as Lennox part 100935-02) features a durable construction and an external equalization line to compensate for pressure drops across the coil. As a veteran-grade HVAC replacement part, it ensures seamless integration with Lennox residential and commercial air handlers and heat pumps, preventing compressor slugging and evaporator starving. When replacing a failed valve, technicians should always install a new liquid line filter drier to protect the internal needle and seat from contaminants that cause hunting or restricted flow.
Key Benefits:- Precise Refrigerant Metering: Optimized for R410A systems to maintain consistent evaporator superheat and prevent liquid floodback.
- OEM Compatibility: Direct replacement for Lennox 100935-02, ensuring proper fitment and thread alignment without field modifications.
- Enhanced System Efficiency: Modulates flow based on thermal load to maximize SEER ratings and reduce energy consumption.
- Rugged Reliability: Engineered to withstand high-pressure differentials common in modern HVACR applications.
- Is the Lennox 12L24 compatible with R-22 systems? No, this valve is specifically calibrated for the pressure-temperature characteristics of R410A refrigerant and should not be used with R-22.
- What are the symptoms of a failing TXV? Common indicators include evaporator coil icing, high superheat readings, or the system "hunting" (fluctuating suction pressures).
- Does this kit include the sensing bulb and mounting hardware? Yes, the TXV kit typically includes the valve body, sensing bulb, and the necessary clips for secure attachment to the suction line.
This item is not eligible for free shipping.
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 12L24 Expansion Valve
The Lennox 12L24 Expansion Valve is a critical OEM thermostatic expansion valve (TXV) designed specifically for R410A refrigerant systems. This metering device regulates the precise flow of liquid refrigerant into the evaporator coil, maintaining the optimal superheat required for high-efficiency cooling performance. Built to handle the higher operating pressures of HFC-410A, the 12L24 (also identified as Lennox part 100935-02) features a durable construction and an external equalization line to compensate for pressure drops across the coil. As a veteran-grade HVAC replacement part, it ensures seamless integration with Lennox residential and commercial air handlers and heat pumps, preventing compressor slugging and evaporator starving. When replacing a failed valve, technicians should always install a new liquid line filter drier to protect the internal needle and seat from contaminants that cause hunting or restricted flow.
Key Benefits:- Precise Refrigerant Metering: Optimized for R410A systems to maintain consistent evaporator superheat and prevent liquid floodback.
- OEM Compatibility: Direct replacement for Lennox 100935-02, ensuring proper fitment and thread alignment without field modifications.
- Enhanced System Efficiency: Modulates flow based on thermal load to maximize SEER ratings and reduce energy consumption.
- Rugged Reliability: Engineered to withstand high-pressure differentials common in modern HVACR applications.
- Is the Lennox 12L24 compatible with R-22 systems? No, this valve is specifically calibrated for the pressure-temperature characteristics of R410A refrigerant and should not be used with R-22.
- What are the symptoms of a failing TXV? Common indicators include evaporator coil icing, high superheat readings, or the system "hunting" (fluctuating suction pressures).
- Does this kit include the sensing bulb and mounting hardware? Yes, the TXV kit typically includes the valve body, sensing bulb, and the necessary clips for secure attachment to the suction line.
This item is not eligible for free shipping.
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.
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Description
The Lennox 12L24 Expansion Valve is a critical OEM thermostatic expansion valve (TXV) designed specifically for R410A refrigerant systems. This metering device regulates the precise flow of liquid refrigerant into the evaporator coil, maintaining the optimal superheat required for high-efficiency cooling performance. Built to handle the higher operating pressures of HFC-410A, the 12L24 (also identified as Lennox part 100935-02) features a durable construction and an external equalization line to compensate for pressure drops across the coil. As a veteran-grade HVAC replacement part, it ensures seamless integration with Lennox residential and commercial air handlers and heat pumps, preventing compressor slugging and evaporator starving. When replacing a failed valve, technicians should always install a new liquid line filter drier to protect the internal needle and seat from contaminants that cause hunting or restricted flow.
Key Benefits:- Precise Refrigerant Metering: Optimized for R410A systems to maintain consistent evaporator superheat and prevent liquid floodback.
- OEM Compatibility: Direct replacement for Lennox 100935-02, ensuring proper fitment and thread alignment without field modifications.
- Enhanced System Efficiency: Modulates flow based on thermal load to maximize SEER ratings and reduce energy consumption.
- Rugged Reliability: Engineered to withstand high-pressure differentials common in modern HVACR applications.
- Is the Lennox 12L24 compatible with R-22 systems? No, this valve is specifically calibrated for the pressure-temperature characteristics of R410A refrigerant and should not be used with R-22.
- What are the symptoms of a failing TXV? Common indicators include evaporator coil icing, high superheat readings, or the system "hunting" (fluctuating suction pressures).
- Does this kit include the sensing bulb and mounting hardware? Yes, the TXV kit typically includes the valve body, sensing bulb, and the necessary clips for secure attachment to the suction line.
This item is not eligible for free shipping.
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.












