
Lennox 25W28 TXV
The Lennox 25W28 TXV is a precision-engineered 5-ton thermal expansion valve designed specifically for maintaining optimal refrigerant flow in high-capacity residential and commercial HVAC units. As an OEM Lennox replacement part, this valve is critical for technicians troubleshooting evaporator coil freeze-ups or hunting issues in older R22 refrigerant systems. The 100679-07 expansion valve regulates the liquid refrigerant entering the evaporator based on the heat load, ensuring the coil stays active without flooding the compressor. This HVAC expansion valve is built with a heavy-duty brass body and stainless steel internal components to handle the high-pressure demands of a 60,000 BTU system. For contractors performing a TXV replacement, the 25W28 provides the reliable throttling necessary to restore system subcooling and superheat to factory specifications. This direct-drop-in component ensures seamless compatibility with Lennox air handlers and cased coils, eliminating the need for field-modifying non-standard metering devices.
Key Benefits:- Precise Refrigerant Metering: Ensures the evaporator coil operates at peak efficiency by maintaining a consistent superheat.
- OEM Compatibility: Genuine Lennox 25W28 part ensures exact fitment and pressure ratings for 5-ton air conditioning and heat pump systems.
- R22 System Support: Specifically calibrated for systems utilizing R-22 refrigerant, making it a vital component for legacy equipment maintenance.
- Rugged Construction: Durable brass and metallic alloys offer superior resistance to vibration and thermal stress in demanding environments.
- Improved System Reliability: Prevents liquid slugging and compressor damage by accurately controlling the flow of liquid refrigerant.
Is the Lennox 25W28 compatible with R-410A systems?
No, this specific valve is designed and calibrated for R22 refrigerant applications. Using it with R-410A will lead to improper metering and potential system failure due to different pressure requirements.
What are the signs that this 5-ton TXV needs to be replaced?
Common indicators include high discharge pressure, low suction pressure, excessive superheat, or a frost pattern starting at the outlet of the thermal expansion valve while the inlet remains clear.
Does this valve include the sensing bulb and mounting hardware?
The 25W28 is a complete thermostatic expansion valve assembly including the integrated sensing bulb, which must be properly insulated and mounted on the suction line to ensure accurate temperature sensing.
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: $141.86
-65%$141.86
$49.65Lennox 25W28 TXV
The Lennox 25W28 TXV is a precision-engineered 5-ton thermal expansion valve designed specifically for maintaining optimal refrigerant flow in high-capacity residential and commercial HVAC units. As an OEM Lennox replacement part, this valve is critical for technicians troubleshooting evaporator coil freeze-ups or hunting issues in older R22 refrigerant systems. The 100679-07 expansion valve regulates the liquid refrigerant entering the evaporator based on the heat load, ensuring the coil stays active without flooding the compressor. This HVAC expansion valve is built with a heavy-duty brass body and stainless steel internal components to handle the high-pressure demands of a 60,000 BTU system. For contractors performing a TXV replacement, the 25W28 provides the reliable throttling necessary to restore system subcooling and superheat to factory specifications. This direct-drop-in component ensures seamless compatibility with Lennox air handlers and cased coils, eliminating the need for field-modifying non-standard metering devices.
Key Benefits:- Precise Refrigerant Metering: Ensures the evaporator coil operates at peak efficiency by maintaining a consistent superheat.
- OEM Compatibility: Genuine Lennox 25W28 part ensures exact fitment and pressure ratings for 5-ton air conditioning and heat pump systems.
- R22 System Support: Specifically calibrated for systems utilizing R-22 refrigerant, making it a vital component for legacy equipment maintenance.
- Rugged Construction: Durable brass and metallic alloys offer superior resistance to vibration and thermal stress in demanding environments.
- Improved System Reliability: Prevents liquid slugging and compressor damage by accurately controlling the flow of liquid refrigerant.
Is the Lennox 25W28 compatible with R-410A systems?
No, this specific valve is designed and calibrated for R22 refrigerant applications. Using it with R-410A will lead to improper metering and potential system failure due to different pressure requirements.
What are the signs that this 5-ton TXV needs to be replaced?
Common indicators include high discharge pressure, low suction pressure, excessive superheat, or a frost pattern starting at the outlet of the thermal expansion valve while the inlet remains clear.
Does this valve include the sensing bulb and mounting hardware?
The 25W28 is a complete thermostatic expansion valve assembly including the integrated sensing bulb, which must be properly insulated and mounted on the suction line to ensure accurate temperature sensing.
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 25W28 TXV is a precision-engineered 5-ton thermal expansion valve designed specifically for maintaining optimal refrigerant flow in high-capacity residential and commercial HVAC units. As an OEM Lennox replacement part, this valve is critical for technicians troubleshooting evaporator coil freeze-ups or hunting issues in older R22 refrigerant systems. The 100679-07 expansion valve regulates the liquid refrigerant entering the evaporator based on the heat load, ensuring the coil stays active without flooding the compressor. This HVAC expansion valve is built with a heavy-duty brass body and stainless steel internal components to handle the high-pressure demands of a 60,000 BTU system. For contractors performing a TXV replacement, the 25W28 provides the reliable throttling necessary to restore system subcooling and superheat to factory specifications. This direct-drop-in component ensures seamless compatibility with Lennox air handlers and cased coils, eliminating the need for field-modifying non-standard metering devices.
Key Benefits:- Precise Refrigerant Metering: Ensures the evaporator coil operates at peak efficiency by maintaining a consistent superheat.
- OEM Compatibility: Genuine Lennox 25W28 part ensures exact fitment and pressure ratings for 5-ton air conditioning and heat pump systems.
- R22 System Support: Specifically calibrated for systems utilizing R-22 refrigerant, making it a vital component for legacy equipment maintenance.
- Rugged Construction: Durable brass and metallic alloys offer superior resistance to vibration and thermal stress in demanding environments.
- Improved System Reliability: Prevents liquid slugging and compressor damage by accurately controlling the flow of liquid refrigerant.
Is the Lennox 25W28 compatible with R-410A systems?
No, this specific valve is designed and calibrated for R22 refrigerant applications. Using it with R-410A will lead to improper metering and potential system failure due to different pressure requirements.
What are the signs that this 5-ton TXV needs to be replaced?
Common indicators include high discharge pressure, low suction pressure, excessive superheat, or a frost pattern starting at the outlet of the thermal expansion valve while the inlet remains clear.
Does this valve include the sensing bulb and mounting hardware?
The 25W28 is a complete thermostatic expansion valve assembly including the integrated sensing bulb, which must be properly insulated and mounted on the suction line to ensure accurate temperature sensing.
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.












