Lennox 42W29 TXV
The Lennox 42W29 is a high-precision thermostatic expansion valve (TXV) designed to regulate refrigerant flow in 2-ton residential and light commercial cooling systems. This genuine OEM Lennox part (MPN 100679-15) is engineered for R410A refrigerant applications, ensuring optimal superheat control and system efficiency. Featuring 3/8" x 1/2" ODF connections, the Lennox 42W29 TXV provides a secure, leak-resistant fit for sweat-connection evaporator coils. By accurately modulating refrigerant based on heat load, this 2-ton expansion valve prevents liquid slugging and maximizes the SEER rating of compatible Lennox air conditioner and heat pump models, including the KGB030S4 and KCB036S4 series. For technicians performing HVAC refrigerant flow management, this valve is a critical component for maintaining stable evaporation temperatures and consistent indoor comfort.
Key Benefits- Precise Refrigerant Metering: Delivers exact R410A flow to the evaporator coil to maintain target superheat.
- OEM Compatibility: Specifically engineered for Lennox 2-ton cooling systems, ensuring rapid installation and reliable performance.
- Heavy-Duty Construction: Features durable copper ODF (Outer Diameter Female) connections for robust brazing in the field.
- System Protection: Acts as a primary safeguard against compressor damage by preventing unevaporated refrigerant from returning through the suction line.
What are the inlet and outlet sizes for the 42W29?
This valve features a 3/8-inch inlet and a 1/2-inch outlet, both designed for standard ODF sweat-on connections.
Can I use this TXV with R22 systems?
No, the Lennox 42W29 is calibrated specifically for R410A refrigerant and should not be used in R22 or older R22-replacement applications.
Does this kit include the sensing bulb?
Yes, as a complete expansion valve assembly, it includes the integrated sensing bulb required to monitor suction line temperature and adjust flow accordingly.
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.
Original: $120.14
-65%$120.14
$42.05Lennox 42W29 TXV
The Lennox 42W29 is a high-precision thermostatic expansion valve (TXV) designed to regulate refrigerant flow in 2-ton residential and light commercial cooling systems. This genuine OEM Lennox part (MPN 100679-15) is engineered for R410A refrigerant applications, ensuring optimal superheat control and system efficiency. Featuring 3/8" x 1/2" ODF connections, the Lennox 42W29 TXV provides a secure, leak-resistant fit for sweat-connection evaporator coils. By accurately modulating refrigerant based on heat load, this 2-ton expansion valve prevents liquid slugging and maximizes the SEER rating of compatible Lennox air conditioner and heat pump models, including the KGB030S4 and KCB036S4 series. For technicians performing HVAC refrigerant flow management, this valve is a critical component for maintaining stable evaporation temperatures and consistent indoor comfort.
Key Benefits- Precise Refrigerant Metering: Delivers exact R410A flow to the evaporator coil to maintain target superheat.
- OEM Compatibility: Specifically engineered for Lennox 2-ton cooling systems, ensuring rapid installation and reliable performance.
- Heavy-Duty Construction: Features durable copper ODF (Outer Diameter Female) connections for robust brazing in the field.
- System Protection: Acts as a primary safeguard against compressor damage by preventing unevaporated refrigerant from returning through the suction line.
What are the inlet and outlet sizes for the 42W29?
This valve features a 3/8-inch inlet and a 1/2-inch outlet, both designed for standard ODF sweat-on connections.
Can I use this TXV with R22 systems?
No, the Lennox 42W29 is calibrated specifically for R410A refrigerant and should not be used in R22 or older R22-replacement applications.
Does this kit include the sensing bulb?
Yes, as a complete expansion valve assembly, it includes the integrated sensing bulb required to monitor suction line temperature and adjust flow accordingly.
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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Product Information
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Description
The Lennox 42W29 is a high-precision thermostatic expansion valve (TXV) designed to regulate refrigerant flow in 2-ton residential and light commercial cooling systems. This genuine OEM Lennox part (MPN 100679-15) is engineered for R410A refrigerant applications, ensuring optimal superheat control and system efficiency. Featuring 3/8" x 1/2" ODF connections, the Lennox 42W29 TXV provides a secure, leak-resistant fit for sweat-connection evaporator coils. By accurately modulating refrigerant based on heat load, this 2-ton expansion valve prevents liquid slugging and maximizes the SEER rating of compatible Lennox air conditioner and heat pump models, including the KGB030S4 and KCB036S4 series. For technicians performing HVAC refrigerant flow management, this valve is a critical component for maintaining stable evaporation temperatures and consistent indoor comfort.
Key Benefits- Precise Refrigerant Metering: Delivers exact R410A flow to the evaporator coil to maintain target superheat.
- OEM Compatibility: Specifically engineered for Lennox 2-ton cooling systems, ensuring rapid installation and reliable performance.
- Heavy-Duty Construction: Features durable copper ODF (Outer Diameter Female) connections for robust brazing in the field.
- System Protection: Acts as a primary safeguard against compressor damage by preventing unevaporated refrigerant from returning through the suction line.
What are the inlet and outlet sizes for the 42W29?
This valve features a 3/8-inch inlet and a 1/2-inch outlet, both designed for standard ODF sweat-on connections.
Can I use this TXV with R22 systems?
No, the Lennox 42W29 is calibrated specifically for R410A refrigerant and should not be used in R22 or older R22-replacement applications.
Does this kit include the sensing bulb?
Yes, as a complete expansion valve assembly, it includes the integrated sensing bulb required to monitor suction line temperature and adjust flow accordingly.
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.
