Lennox 99K40 TXV
The Lennox 99K40 is a high-performance HVAC thermal expansion valve engineered for precision refrigerant metering in large-capacity 8-ton air conditioning systems and heat pump equipment. Featuring a 3/8" x 7/8" ODF (Outside Diameter Fitting) connection and a 30-inch capillary tube, this OEM component is designed to replace aging or failing valves in Lennox split systems, ensuring the evaporator receives the exact refrigerant charge needed to maintain efficiency. By dynamically adjusting the flow based on the cooling load, the Lennox expansion valve 99K40 prevents liquid slugging and protects the compressor from premature failure. For contractors working on Lennox Ultra or Ultra II models, this 8-ton TXV provides a robust solution for restoring system superheat to manufacturer specifications. Utilizing a thermostatic expansion valve over a fixed orifice or capillary tube increases seasonal efficiency and broadens the operating range, allowing the system to adapt to varying indoor and outdoor thermal loads without manual intervention.
Key Benefits:- System Reliability: Precision-engineered to eliminate refrigerant overfeeding and underfeeding, reducing stress on the compressor motor.
- OEM Compatibility: Genuine Lennox 99K40 replacement part designed for seamless integration with existing high-capacity split system evaporators.
- Enhanced Efficiency: Optimizes the heat exchange process within the coil, supporting higher SEER ratings and lower energy consumption throughout the cooling season.
- Durable Construction: Built with high-grade materials to withstand the high-pressure environment of 8-ton industrial and residential HVAC/R applications.
- How do I know if my Lennox 99K40 TXV is failing? Common symptoms include an iced-over evaporator coil, abnormally high superheat readings, or the compressor tripping on high-pressure limits due to a "stuck closed" valve.
- Is this valve compatible with R-410A systems? While originally found in various R-22 legacy systems, you must verify the power element rating and pressure settings for your specific refrigerant and model requirements before installation.
- Can I use this for a 5-ton system? No, this is an 8-ton capacity expansion valve; using an oversized TXV can cause severe hunting and erratic refrigerant flow, leading to potential system damage.
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: $113.48
-65%$113.48
$39.72Lennox 99K40 TXV
The Lennox 99K40 is a high-performance HVAC thermal expansion valve engineered for precision refrigerant metering in large-capacity 8-ton air conditioning systems and heat pump equipment. Featuring a 3/8" x 7/8" ODF (Outside Diameter Fitting) connection and a 30-inch capillary tube, this OEM component is designed to replace aging or failing valves in Lennox split systems, ensuring the evaporator receives the exact refrigerant charge needed to maintain efficiency. By dynamically adjusting the flow based on the cooling load, the Lennox expansion valve 99K40 prevents liquid slugging and protects the compressor from premature failure. For contractors working on Lennox Ultra or Ultra II models, this 8-ton TXV provides a robust solution for restoring system superheat to manufacturer specifications. Utilizing a thermostatic expansion valve over a fixed orifice or capillary tube increases seasonal efficiency and broadens the operating range, allowing the system to adapt to varying indoor and outdoor thermal loads without manual intervention.
Key Benefits:- System Reliability: Precision-engineered to eliminate refrigerant overfeeding and underfeeding, reducing stress on the compressor motor.
- OEM Compatibility: Genuine Lennox 99K40 replacement part designed for seamless integration with existing high-capacity split system evaporators.
- Enhanced Efficiency: Optimizes the heat exchange process within the coil, supporting higher SEER ratings and lower energy consumption throughout the cooling season.
- Durable Construction: Built with high-grade materials to withstand the high-pressure environment of 8-ton industrial and residential HVAC/R applications.
- How do I know if my Lennox 99K40 TXV is failing? Common symptoms include an iced-over evaporator coil, abnormally high superheat readings, or the compressor tripping on high-pressure limits due to a "stuck closed" valve.
- Is this valve compatible with R-410A systems? While originally found in various R-22 legacy systems, you must verify the power element rating and pressure settings for your specific refrigerant and model requirements before installation.
- Can I use this for a 5-ton system? No, this is an 8-ton capacity expansion valve; using an oversized TXV can cause severe hunting and erratic refrigerant flow, leading to potential system damage.
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 99K40 is a high-performance HVAC thermal expansion valve engineered for precision refrigerant metering in large-capacity 8-ton air conditioning systems and heat pump equipment. Featuring a 3/8" x 7/8" ODF (Outside Diameter Fitting) connection and a 30-inch capillary tube, this OEM component is designed to replace aging or failing valves in Lennox split systems, ensuring the evaporator receives the exact refrigerant charge needed to maintain efficiency. By dynamically adjusting the flow based on the cooling load, the Lennox expansion valve 99K40 prevents liquid slugging and protects the compressor from premature failure. For contractors working on Lennox Ultra or Ultra II models, this 8-ton TXV provides a robust solution for restoring system superheat to manufacturer specifications. Utilizing a thermostatic expansion valve over a fixed orifice or capillary tube increases seasonal efficiency and broadens the operating range, allowing the system to adapt to varying indoor and outdoor thermal loads without manual intervention.
Key Benefits:- System Reliability: Precision-engineered to eliminate refrigerant overfeeding and underfeeding, reducing stress on the compressor motor.
- OEM Compatibility: Genuine Lennox 99K40 replacement part designed for seamless integration with existing high-capacity split system evaporators.
- Enhanced Efficiency: Optimizes the heat exchange process within the coil, supporting higher SEER ratings and lower energy consumption throughout the cooling season.
- Durable Construction: Built with high-grade materials to withstand the high-pressure environment of 8-ton industrial and residential HVAC/R applications.
- How do I know if my Lennox 99K40 TXV is failing? Common symptoms include an iced-over evaporator coil, abnormally high superheat readings, or the compressor tripping on high-pressure limits due to a "stuck closed" valve.
- Is this valve compatible with R-410A systems? While originally found in various R-22 legacy systems, you must verify the power element rating and pressure settings for your specific refrigerant and model requirements before installation.
- Can I use this for a 5-ton system? No, this is an 8-ton capacity expansion valve; using an oversized TXV can cause severe hunting and erratic refrigerant flow, leading to potential system damage.
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.
