Lennox 10W89 Piston Kit
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Lennox 10W89 Piston Kit

Lennox 10W89 Piston Kit

For service technicians maintaining Lennox air conditioning and heat pump systems, the Lennox 10W89 Piston Kit (100484-37) is a critical fixed orifice metering device required to regulate refrigerant flow. This genuine OEM Lennox 10W89 kit features a precise 0.090 orifice size, ensuring the evaporator coil receives the exact refrigerant saturation needed for optimal heat exchange. Whether you are performing a piston orifice replacement during a coil swap or troubleshooting a restricted liquid line, this RFC kit provides the accurate pressure drop necessary for system balance. Built to withstand high-pressure R-410A environments, this internal metering component eliminates the complexities of TXV troubleshooting in compatible residential units. Using a Lennox 10W89 expansion piston ensures your installation remains within manufacturer specifications, preventing premature compressor wear and maintaining the intended SEER rating of the equipment. This HVAC refrigerant piston is a standard replacement part for various Lennox-branded air handlers and cased coils.

Key Benefits
  • Precise Metering: The 0.090 orifice size provides consistent refrigerant flow regulation for balanced system pressures.
  • OEM Compatibility: Specifically engineered as a Lennox 100484-37 replacement to ensure a seamless fit within the distributor assembly.
  • Simplified Service: Ideal for manual expansion valve applications where a fixed orifice is preferred over a thermostatic expansion valve.
  • Durable Construction: High-grade brass and internal components designed for long-term reliability in high-pressure AC and heat pump circuits.
  • Performance Restoration: Essential for fixing restricted flow issues that lead to evaporator freeze-ups or poor cooling capacity.
Common Questions

What is the orifice size for the 10W89 kit?
The Lennox 10W89 utilizes a 0.090-inch orifice diameter, which is the standard size for specific tonnage ratings in Lennox residential systems.

Can this piston kit be used with R-410A refrigerant?
Yes, this HVAC piston orifice is designed to handle the pressures and flow characteristics of modern R-410A systems, provided the sizing matches the outdoor unit requirements.

How do I know if I need a .090 piston or a different size?
Piston sizing is determined by the tonnage of the outdoor condenser and the specific coil match. Always refer to the Lennox charging charging chart or the outdoor unit nameplate to verify if the Lennox 10W89 0.090 is the correct match for your specific tonnage.

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.

$5.33

Original: $15.22

-65%
Lennox 10W89 Piston Kit

$15.22

$5.33

Lennox 10W89 Piston Kit

For service technicians maintaining Lennox air conditioning and heat pump systems, the Lennox 10W89 Piston Kit (100484-37) is a critical fixed orifice metering device required to regulate refrigerant flow. This genuine OEM Lennox 10W89 kit features a precise 0.090 orifice size, ensuring the evaporator coil receives the exact refrigerant saturation needed for optimal heat exchange. Whether you are performing a piston orifice replacement during a coil swap or troubleshooting a restricted liquid line, this RFC kit provides the accurate pressure drop necessary for system balance. Built to withstand high-pressure R-410A environments, this internal metering component eliminates the complexities of TXV troubleshooting in compatible residential units. Using a Lennox 10W89 expansion piston ensures your installation remains within manufacturer specifications, preventing premature compressor wear and maintaining the intended SEER rating of the equipment. This HVAC refrigerant piston is a standard replacement part for various Lennox-branded air handlers and cased coils.

Key Benefits
  • Precise Metering: The 0.090 orifice size provides consistent refrigerant flow regulation for balanced system pressures.
  • OEM Compatibility: Specifically engineered as a Lennox 100484-37 replacement to ensure a seamless fit within the distributor assembly.
  • Simplified Service: Ideal for manual expansion valve applications where a fixed orifice is preferred over a thermostatic expansion valve.
  • Durable Construction: High-grade brass and internal components designed for long-term reliability in high-pressure AC and heat pump circuits.
  • Performance Restoration: Essential for fixing restricted flow issues that lead to evaporator freeze-ups or poor cooling capacity.
Common Questions

What is the orifice size for the 10W89 kit?
The Lennox 10W89 utilizes a 0.090-inch orifice diameter, which is the standard size for specific tonnage ratings in Lennox residential systems.

Can this piston kit be used with R-410A refrigerant?
Yes, this HVAC piston orifice is designed to handle the pressures and flow characteristics of modern R-410A systems, provided the sizing matches the outdoor unit requirements.

How do I know if I need a .090 piston or a different size?
Piston sizing is determined by the tonnage of the outdoor condenser and the specific coil match. Always refer to the Lennox charging charging chart or the outdoor unit nameplate to verify if the Lennox 10W89 0.090 is the correct match for your specific tonnage.

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

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Description

For service technicians maintaining Lennox air conditioning and heat pump systems, the Lennox 10W89 Piston Kit (100484-37) is a critical fixed orifice metering device required to regulate refrigerant flow. This genuine OEM Lennox 10W89 kit features a precise 0.090 orifice size, ensuring the evaporator coil receives the exact refrigerant saturation needed for optimal heat exchange. Whether you are performing a piston orifice replacement during a coil swap or troubleshooting a restricted liquid line, this RFC kit provides the accurate pressure drop necessary for system balance. Built to withstand high-pressure R-410A environments, this internal metering component eliminates the complexities of TXV troubleshooting in compatible residential units. Using a Lennox 10W89 expansion piston ensures your installation remains within manufacturer specifications, preventing premature compressor wear and maintaining the intended SEER rating of the equipment. This HVAC refrigerant piston is a standard replacement part for various Lennox-branded air handlers and cased coils.

Key Benefits
  • Precise Metering: The 0.090 orifice size provides consistent refrigerant flow regulation for balanced system pressures.
  • OEM Compatibility: Specifically engineered as a Lennox 100484-37 replacement to ensure a seamless fit within the distributor assembly.
  • Simplified Service: Ideal for manual expansion valve applications where a fixed orifice is preferred over a thermostatic expansion valve.
  • Durable Construction: High-grade brass and internal components designed for long-term reliability in high-pressure AC and heat pump circuits.
  • Performance Restoration: Essential for fixing restricted flow issues that lead to evaporator freeze-ups or poor cooling capacity.
Common Questions

What is the orifice size for the 10W89 kit?
The Lennox 10W89 utilizes a 0.090-inch orifice diameter, which is the standard size for specific tonnage ratings in Lennox residential systems.

Can this piston kit be used with R-410A refrigerant?
Yes, this HVAC piston orifice is designed to handle the pressures and flow characteristics of modern R-410A systems, provided the sizing matches the outdoor unit requirements.

How do I know if I need a .090 piston or a different size?
Piston sizing is determined by the tonnage of the outdoor condenser and the specific coil match. Always refer to the Lennox charging charging chart or the outdoor unit nameplate to verify if the Lennox 10W89 0.090 is the correct match for your specific tonnage.

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.