Lennox 99K39 Expansion Valve
As a veteran HVAC technician, I know that maintaining precise refrigerant control is the difference between a high-efficiency system and a compressor failure. The Lennox 99K39 Expansion Valve is a genuine OEM replacement part designed for accurate metering in residential and commercial cooling systems. This Thermostatic Expansion Valve (TXV) utilizes a 3/8-inch inlet and a 1/2-inch outlet to regulate liquid refrigerant flow into the evaporator coil. By responding to changes in suction line temperature and pressure, the 99K39 maintains the required superheat, ensuring the evaporator is never starved or flooded. This TXV replacement is critical for preventing liquid slugging, which can destroy a compressor. When you are on a service call for a Lennox HVAC unit, using a Lennox 99K39 OEM valve ensures a exact drop-in fit, reducing labor time and eliminating the "hunting" issues often seen with universal aftermarket components. This thermal expansion valve is built to high factory standards for industrial-grade durability.
Key Benefits for the Contractor- Precise Refrigerant Metering: Delivers the exact volume of refrigerant required to meet the current heat load, maximizing system SEER ratings.
- OEM Compatibility: Designed specifically for HVAC equipment, ensuring seamless integration with existing liquid lines and sensing bulbs.
- Compressor Protection: Functions as a critical metering device to stop liquid refrigerant from returning to the suction line.
- Optimized Efficiency: Maintains consistent evaporator coil performance across a wide range of ambient temperatures.
- What are the signs of a failing 99K39 TXV? Look for high superheat, low suction pressure, or frost on the expansion valve inlet. If the subcooling is normal but the evaporator is starved, the valve is likely restricted or the bulb has lost its charge.
- How do I verify if this valve is hunting? If your manifold gauges show erratic pressure fluctuations and the superheat won't stabilize, check the bulb mounting and insulation. Ensure the bulb has good thermal contact with the suction line.
- Can this valve be used with R-410A? Yes, this thermal expansion valve is designed for contemporary high-pressure refrigerants common in Lennox cooling systems.
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.
Lennox 99K39 Expansion Valve
As a veteran HVAC technician, I know that maintaining precise refrigerant control is the difference between a high-efficiency system and a compressor failure. The Lennox 99K39 Expansion Valve is a genuine OEM replacement part designed for accurate metering in residential and commercial cooling systems. This Thermostatic Expansion Valve (TXV) utilizes a 3/8-inch inlet and a 1/2-inch outlet to regulate liquid refrigerant flow into the evaporator coil. By responding to changes in suction line temperature and pressure, the 99K39 maintains the required superheat, ensuring the evaporator is never starved or flooded. This TXV replacement is critical for preventing liquid slugging, which can destroy a compressor. When you are on a service call for a Lennox HVAC unit, using a Lennox 99K39 OEM valve ensures a exact drop-in fit, reducing labor time and eliminating the "hunting" issues often seen with universal aftermarket components. This thermal expansion valve is built to high factory standards for industrial-grade durability.
Key Benefits for the Contractor- Precise Refrigerant Metering: Delivers the exact volume of refrigerant required to meet the current heat load, maximizing system SEER ratings.
- OEM Compatibility: Designed specifically for HVAC equipment, ensuring seamless integration with existing liquid lines and sensing bulbs.
- Compressor Protection: Functions as a critical metering device to stop liquid refrigerant from returning to the suction line.
- Optimized Efficiency: Maintains consistent evaporator coil performance across a wide range of ambient temperatures.
- What are the signs of a failing 99K39 TXV? Look for high superheat, low suction pressure, or frost on the expansion valve inlet. If the subcooling is normal but the evaporator is starved, the valve is likely restricted or the bulb has lost its charge.
- How do I verify if this valve is hunting? If your manifold gauges show erratic pressure fluctuations and the superheat won't stabilize, check the bulb mounting and insulation. Ensure the bulb has good thermal contact with the suction line.
- Can this valve be used with R-410A? Yes, this thermal expansion valve is designed for contemporary high-pressure refrigerants common in Lennox cooling systems.
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
As a veteran HVAC technician, I know that maintaining precise refrigerant control is the difference between a high-efficiency system and a compressor failure. The Lennox 99K39 Expansion Valve is a genuine OEM replacement part designed for accurate metering in residential and commercial cooling systems. This Thermostatic Expansion Valve (TXV) utilizes a 3/8-inch inlet and a 1/2-inch outlet to regulate liquid refrigerant flow into the evaporator coil. By responding to changes in suction line temperature and pressure, the 99K39 maintains the required superheat, ensuring the evaporator is never starved or flooded. This TXV replacement is critical for preventing liquid slugging, which can destroy a compressor. When you are on a service call for a Lennox HVAC unit, using a Lennox 99K39 OEM valve ensures a exact drop-in fit, reducing labor time and eliminating the "hunting" issues often seen with universal aftermarket components. This thermal expansion valve is built to high factory standards for industrial-grade durability.
Key Benefits for the Contractor- Precise Refrigerant Metering: Delivers the exact volume of refrigerant required to meet the current heat load, maximizing system SEER ratings.
- OEM Compatibility: Designed specifically for HVAC equipment, ensuring seamless integration with existing liquid lines and sensing bulbs.
- Compressor Protection: Functions as a critical metering device to stop liquid refrigerant from returning to the suction line.
- Optimized Efficiency: Maintains consistent evaporator coil performance across a wide range of ambient temperatures.
- What are the signs of a failing 99K39 TXV? Look for high superheat, low suction pressure, or frost on the expansion valve inlet. If the subcooling is normal but the evaporator is starved, the valve is likely restricted or the bulb has lost its charge.
- How do I verify if this valve is hunting? If your manifold gauges show erratic pressure fluctuations and the superheat won't stabilize, check the bulb mounting and insulation. Ensure the bulb has good thermal contact with the suction line.
- Can this valve be used with R-410A? Yes, this thermal expansion valve is designed for contemporary high-pressure refrigerants common in Lennox cooling systems.
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.
