Lennox 14W77 TXV
The Lennox 14W77 is an OEM thermostatic expansion valve (TXV) engineered for high-precision refrigerant metering in residential and light commercial R410A systems. Designed as a direct 100254-02 replacement, this valve features 3/8" x 1/2" ODF connections and is critical for maintaining the balance between liquid and vapor in the evaporator. By accurately regulating the refrigerant flow based on load demand, the 14W77 prevents compressor floodback and optimizes superheat levels. For technicians performing an evaporator coil repair or a full HVAC system diagnostic, this R410A expansion valve provides the reliability needed for long-term energy efficiency. Its robust internal needle and seat assembly ensure consistent cooling performance across varying ambient temperatures. Proper installation of this factory-authorized part is essential to prevent low-pressure cycling and ensure the indoor coil operates within its intended thermal parameters.
Key Benefits- Ensures precise flow control to maximize heat transfer across the evaporator coil.
- Constructed with high-grade components to resist debris-related internal clogging.
- Features standard ODF braze connections for a secure, leak-free installation in the liquid line.
- Original Lennox replacement part ensures complete compatibility with specific indoor air handlers and package units.
- How do I troubleshoot a suspected TXV failure on a Lennox unit? Start by checking the subcooling at the valve inlet and superheat at the evaporator outlet. If you see high superheat with high subcooling, the 14W77 may be restricted or have a lost bulb charge.
- Does this valve include the thermal bulb and mounting hardware? This is the complete thermostatic assembly; however, always ensure the bulb is securely strapped at the 3 or 9 o'clock position on the suction line for accurate sensing.
- Can I use this valve on a system converted from R-22? No, this valve is specifically calibrated for the pressure-temperature characteristics of R410A refrigerant and should not be used in R-22 applications.
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.
Original: $133.48
-65%$133.48
$46.72Lennox 14W77 TXV
The Lennox 14W77 is an OEM thermostatic expansion valve (TXV) engineered for high-precision refrigerant metering in residential and light commercial R410A systems. Designed as a direct 100254-02 replacement, this valve features 3/8" x 1/2" ODF connections and is critical for maintaining the balance between liquid and vapor in the evaporator. By accurately regulating the refrigerant flow based on load demand, the 14W77 prevents compressor floodback and optimizes superheat levels. For technicians performing an evaporator coil repair or a full HVAC system diagnostic, this R410A expansion valve provides the reliability needed for long-term energy efficiency. Its robust internal needle and seat assembly ensure consistent cooling performance across varying ambient temperatures. Proper installation of this factory-authorized part is essential to prevent low-pressure cycling and ensure the indoor coil operates within its intended thermal parameters.
Key Benefits- Ensures precise flow control to maximize heat transfer across the evaporator coil.
- Constructed with high-grade components to resist debris-related internal clogging.
- Features standard ODF braze connections for a secure, leak-free installation in the liquid line.
- Original Lennox replacement part ensures complete compatibility with specific indoor air handlers and package units.
- How do I troubleshoot a suspected TXV failure on a Lennox unit? Start by checking the subcooling at the valve inlet and superheat at the evaporator outlet. If you see high superheat with high subcooling, the 14W77 may be restricted or have a lost bulb charge.
- Does this valve include the thermal bulb and mounting hardware? This is the complete thermostatic assembly; however, always ensure the bulb is securely strapped at the 3 or 9 o'clock position on the suction line for accurate sensing.
- Can I use this valve on a system converted from R-22? No, this valve is specifically calibrated for the pressure-temperature characteristics of R410A refrigerant and should not be used in R-22 applications.
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 14W77 is an OEM thermostatic expansion valve (TXV) engineered for high-precision refrigerant metering in residential and light commercial R410A systems. Designed as a direct 100254-02 replacement, this valve features 3/8" x 1/2" ODF connections and is critical for maintaining the balance between liquid and vapor in the evaporator. By accurately regulating the refrigerant flow based on load demand, the 14W77 prevents compressor floodback and optimizes superheat levels. For technicians performing an evaporator coil repair or a full HVAC system diagnostic, this R410A expansion valve provides the reliability needed for long-term energy efficiency. Its robust internal needle and seat assembly ensure consistent cooling performance across varying ambient temperatures. Proper installation of this factory-authorized part is essential to prevent low-pressure cycling and ensure the indoor coil operates within its intended thermal parameters.
Key Benefits- Ensures precise flow control to maximize heat transfer across the evaporator coil.
- Constructed with high-grade components to resist debris-related internal clogging.
- Features standard ODF braze connections for a secure, leak-free installation in the liquid line.
- Original Lennox replacement part ensures complete compatibility with specific indoor air handlers and package units.
- How do I troubleshoot a suspected TXV failure on a Lennox unit? Start by checking the subcooling at the valve inlet and superheat at the evaporator outlet. If you see high superheat with high subcooling, the 14W77 may be restricted or have a lost bulb charge.
- Does this valve include the thermal bulb and mounting hardware? This is the complete thermostatic assembly; however, always ensure the bulb is securely strapped at the 3 or 9 o'clock position on the suction line for accurate sensing.
- Can I use this valve on a system converted from R-22? No, this valve is specifically calibrated for the pressure-temperature characteristics of R410A refrigerant and should not be used in R-22 applications.
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.
