Lennox 42W35 TXV
The Lennox 42W35 is a professional-grade R-410A thermostatic expansion valve (TXV) engineered for high-precision refrigerant metering in residential and light commercial cooling systems. This OEM Lennox 100679-22 replacement features a 30-inch capillary tube designed to maintain consistent superheat across varying thermal loads, effectively preventing evaporator flooding and protecting the compressor from liquid slugging. With connection specifications of 3/8" x 1/2" x 1/4", this brass-bodied valve ensures a secure, leak-resistant fit within the refrigerant circuit. As a critical HVAC metering device, it balances flow based on temperature and pressure, optimizing heat exchange efficiency in split systems and heat pumps. Whether you are performing a service replacement or a system upgrade, the 42W35 delivers the reliability demanded by veteran contractors to keep high-efficiency equipment operating within factory parameters. This TXV expansion valve is a direct-fit solution for numerous Lennox k-series and z-series models, offering stable performance even in demanding environments.
Key Benefits
- Enhanced System Efficiency: Precise modulation of R-410A flow maximizes COP (Coefficient of Performance) and reduces energy consumption.
- Compressor Protection: Accurate superheat control prevents liquid refrigerant from reaching the suction line, extending the life of the compressor.
- Durable Brass Construction: High-quality materials resist corrosion and mechanical wear in rigorous HVAC environments.
- Universal Capillary Length: The 30-inch sensing bulb lead provides the necessary reach for flexible mounting on various evaporator headers.
- Factory Original Compatibility: An OEM Lennox replacement part ensures technical alignment with factory specifications for air conditioners and heat pumps.
Common Questions
Is the Lennox 42W35 compatible with R-22 systems?
No, this valve is specifically calibrated for R-410A refrigerant. Using it with R-22 will result in incorrect superheat readings and potential system failure due to differing pressure-temperature relationships.
Where should the 30-inch capillary sensing bulb be mounted?
The sensing bulb should be mounted on a horizontal section of the suction line, ideally at the 10 or 2 o'clock position, and properly insulated to ensure accurate temperature sensing of the suction gas.
Does this TXV include the internal check valve for heat pump applications?
Yes, the 42W35 is designed to function within both cooling-only and heat pump cycles, allowing for proper refrigerant bypass or flow modulation depending on the system mode.
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: $137.93
-65%$137.93
$48.28Lennox 42W35 TXV
The Lennox 42W35 is a professional-grade R-410A thermostatic expansion valve (TXV) engineered for high-precision refrigerant metering in residential and light commercial cooling systems. This OEM Lennox 100679-22 replacement features a 30-inch capillary tube designed to maintain consistent superheat across varying thermal loads, effectively preventing evaporator flooding and protecting the compressor from liquid slugging. With connection specifications of 3/8" x 1/2" x 1/4", this brass-bodied valve ensures a secure, leak-resistant fit within the refrigerant circuit. As a critical HVAC metering device, it balances flow based on temperature and pressure, optimizing heat exchange efficiency in split systems and heat pumps. Whether you are performing a service replacement or a system upgrade, the 42W35 delivers the reliability demanded by veteran contractors to keep high-efficiency equipment operating within factory parameters. This TXV expansion valve is a direct-fit solution for numerous Lennox k-series and z-series models, offering stable performance even in demanding environments.
Key Benefits
- Enhanced System Efficiency: Precise modulation of R-410A flow maximizes COP (Coefficient of Performance) and reduces energy consumption.
- Compressor Protection: Accurate superheat control prevents liquid refrigerant from reaching the suction line, extending the life of the compressor.
- Durable Brass Construction: High-quality materials resist corrosion and mechanical wear in rigorous HVAC environments.
- Universal Capillary Length: The 30-inch sensing bulb lead provides the necessary reach for flexible mounting on various evaporator headers.
- Factory Original Compatibility: An OEM Lennox replacement part ensures technical alignment with factory specifications for air conditioners and heat pumps.
Common Questions
Is the Lennox 42W35 compatible with R-22 systems?
No, this valve is specifically calibrated for R-410A refrigerant. Using it with R-22 will result in incorrect superheat readings and potential system failure due to differing pressure-temperature relationships.
Where should the 30-inch capillary sensing bulb be mounted?
The sensing bulb should be mounted on a horizontal section of the suction line, ideally at the 10 or 2 o'clock position, and properly insulated to ensure accurate temperature sensing of the suction gas.
Does this TXV include the internal check valve for heat pump applications?
Yes, the 42W35 is designed to function within both cooling-only and heat pump cycles, allowing for proper refrigerant bypass or flow modulation depending on the system mode.
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 42W35 is a professional-grade R-410A thermostatic expansion valve (TXV) engineered for high-precision refrigerant metering in residential and light commercial cooling systems. This OEM Lennox 100679-22 replacement features a 30-inch capillary tube designed to maintain consistent superheat across varying thermal loads, effectively preventing evaporator flooding and protecting the compressor from liquid slugging. With connection specifications of 3/8" x 1/2" x 1/4", this brass-bodied valve ensures a secure, leak-resistant fit within the refrigerant circuit. As a critical HVAC metering device, it balances flow based on temperature and pressure, optimizing heat exchange efficiency in split systems and heat pumps. Whether you are performing a service replacement or a system upgrade, the 42W35 delivers the reliability demanded by veteran contractors to keep high-efficiency equipment operating within factory parameters. This TXV expansion valve is a direct-fit solution for numerous Lennox k-series and z-series models, offering stable performance even in demanding environments.
Key Benefits
- Enhanced System Efficiency: Precise modulation of R-410A flow maximizes COP (Coefficient of Performance) and reduces energy consumption.
- Compressor Protection: Accurate superheat control prevents liquid refrigerant from reaching the suction line, extending the life of the compressor.
- Durable Brass Construction: High-quality materials resist corrosion and mechanical wear in rigorous HVAC environments.
- Universal Capillary Length: The 30-inch sensing bulb lead provides the necessary reach for flexible mounting on various evaporator headers.
- Factory Original Compatibility: An OEM Lennox replacement part ensures technical alignment with factory specifications for air conditioners and heat pumps.
Common Questions
Is the Lennox 42W35 compatible with R-22 systems?
No, this valve is specifically calibrated for R-410A refrigerant. Using it with R-22 will result in incorrect superheat readings and potential system failure due to differing pressure-temperature relationships.
Where should the 30-inch capillary sensing bulb be mounted?
The sensing bulb should be mounted on a horizontal section of the suction line, ideally at the 10 or 2 o'clock position, and properly insulated to ensure accurate temperature sensing of the suction gas.
Does this TXV include the internal check valve for heat pump applications?
Yes, the 42W35 is designed to function within both cooling-only and heat pump cycles, allowing for proper refrigerant bypass or flow modulation depending on the system mode.
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.
