
Lennox 25W25 Expansion Valve
The Lennox 25W25 Expansion Valve (OEM part 100679-04) is a high-precision thermostatic expansion valve (TXV) engineered for R22 refrigerant systems with a cooling capacity of up to 3 tons. As a critical metering device, it manages the transition of refrigerant from the high-pressure liquid line into the evaporator coil by precisely adjusting flow based on heat load. This HVAC expansion valve ensures the evaporator operates at peak efficiency, preventing liquid slugging to the compressor while maintaining the correct superheat. Built for Lennox HVAC systems, the 25W25 utilizes a durable balanced port design to stabilize pressure and temperature across varying ambient conditions. For contractors performing a TXV replacement, this genuine OEM component provides the exact fit and 3/8" x 1/2" ODF connections required for seamless integration into residential air conditioners and heat pump systems. Proper calibration of this 3 ton expansion valve is essential for optimizing system subcooling and reducing overall energy consumption in older R22 equipment.
Key Benefits- Optimized Refrigerant Metering: Provides precise refrigerant flow control to maintain stable superheat and improve system performance.
- System Longevity: Protects the compressor from liquid floodback, significantly reducing mechanical wear and potential failure.
- OEM Compatibility: Designed specifically as a direct 100679-04 replacement for Lennox air conditioning and heat pump units.
- Energy Efficiency: Enhances the heat transfer process within the evaporator, ensuring the system meets its rated SEER performance.
Is the Lennox 25W25 compatible with R410A systems?
No, this specific model is calibrated for R22 refrigerant. Using it with R410A will result in incorrect pressure regulation and potential system damage.
What are the symptoms of a failing Lennox 25W25 TXV?
Common indicators include evaporator coil icing, high discharge temperatures, or the system "hunting" for the correct superheat, often caused by a restricted orifice or lost power head charge.
Does this expansion valve include the sensing bulb?
Yes, the Lennox 25W25 is a complete thermostatic assembly featuring an integrated sensing bulb for accurate suction line temperature monitoring.
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: $168.13
-65%$168.13
$58.85Lennox 25W25 Expansion Valve
The Lennox 25W25 Expansion Valve (OEM part 100679-04) is a high-precision thermostatic expansion valve (TXV) engineered for R22 refrigerant systems with a cooling capacity of up to 3 tons. As a critical metering device, it manages the transition of refrigerant from the high-pressure liquid line into the evaporator coil by precisely adjusting flow based on heat load. This HVAC expansion valve ensures the evaporator operates at peak efficiency, preventing liquid slugging to the compressor while maintaining the correct superheat. Built for Lennox HVAC systems, the 25W25 utilizes a durable balanced port design to stabilize pressure and temperature across varying ambient conditions. For contractors performing a TXV replacement, this genuine OEM component provides the exact fit and 3/8" x 1/2" ODF connections required for seamless integration into residential air conditioners and heat pump systems. Proper calibration of this 3 ton expansion valve is essential for optimizing system subcooling and reducing overall energy consumption in older R22 equipment.
Key Benefits- Optimized Refrigerant Metering: Provides precise refrigerant flow control to maintain stable superheat and improve system performance.
- System Longevity: Protects the compressor from liquid floodback, significantly reducing mechanical wear and potential failure.
- OEM Compatibility: Designed specifically as a direct 100679-04 replacement for Lennox air conditioning and heat pump units.
- Energy Efficiency: Enhances the heat transfer process within the evaporator, ensuring the system meets its rated SEER performance.
Is the Lennox 25W25 compatible with R410A systems?
No, this specific model is calibrated for R22 refrigerant. Using it with R410A will result in incorrect pressure regulation and potential system damage.
What are the symptoms of a failing Lennox 25W25 TXV?
Common indicators include evaporator coil icing, high discharge temperatures, or the system "hunting" for the correct superheat, often caused by a restricted orifice or lost power head charge.
Does this expansion valve include the sensing bulb?
Yes, the Lennox 25W25 is a complete thermostatic assembly featuring an integrated sensing bulb for accurate suction line temperature monitoring.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Lennox 25W25 Expansion Valve (OEM part 100679-04) is a high-precision thermostatic expansion valve (TXV) engineered for R22 refrigerant systems with a cooling capacity of up to 3 tons. As a critical metering device, it manages the transition of refrigerant from the high-pressure liquid line into the evaporator coil by precisely adjusting flow based on heat load. This HVAC expansion valve ensures the evaporator operates at peak efficiency, preventing liquid slugging to the compressor while maintaining the correct superheat. Built for Lennox HVAC systems, the 25W25 utilizes a durable balanced port design to stabilize pressure and temperature across varying ambient conditions. For contractors performing a TXV replacement, this genuine OEM component provides the exact fit and 3/8" x 1/2" ODF connections required for seamless integration into residential air conditioners and heat pump systems. Proper calibration of this 3 ton expansion valve is essential for optimizing system subcooling and reducing overall energy consumption in older R22 equipment.
Key Benefits- Optimized Refrigerant Metering: Provides precise refrigerant flow control to maintain stable superheat and improve system performance.
- System Longevity: Protects the compressor from liquid floodback, significantly reducing mechanical wear and potential failure.
- OEM Compatibility: Designed specifically as a direct 100679-04 replacement for Lennox air conditioning and heat pump units.
- Energy Efficiency: Enhances the heat transfer process within the evaporator, ensuring the system meets its rated SEER performance.
Is the Lennox 25W25 compatible with R410A systems?
No, this specific model is calibrated for R22 refrigerant. Using it with R410A will result in incorrect pressure regulation and potential system damage.
What are the symptoms of a failing Lennox 25W25 TXV?
Common indicators include evaporator coil icing, high discharge temperatures, or the system "hunting" for the correct superheat, often caused by a restricted orifice or lost power head charge.
Does this expansion valve include the sensing bulb?
Yes, the Lennox 25W25 is a complete thermostatic assembly featuring an integrated sensing bulb for accurate suction line temperature monitoring.
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.












