
Lennox 10W99 Piston Kit
For field technicians and contractors maintaining Lennox equipment, the Lennox 10W99 Piston Kit is a critical OEM refrigerant metering device designed for precise flow regulation. Featuring a .065 orifice size, this factory-authorized assembly ensures your split system air conditioner or heat pump operates at peak efficiency by providing accurate thermal expansion control. Unlike generic alternatives, the 10W99 piston orifice (also identified as Lennox 100484-15) is engineered to survive the high-pressure demands of modern refrigerants while maintaining consistent saturation levels across the evaporator coil. Whether you are performing a SEER-rated system upgrade or a standard liquid line service repair, using the correct metering piston is essential to prevent floodback and ensure the longevity of the compressor. This kit is a direct replacement for Lennox residential HVAC units requiring specific tonnage-to-orifice matching, providing the reliability needed for professional-grade installations.
Key Benefits- Optimized Refrigerant Flow: The .065 orifice size is precision-machined to ensure exact metering for specific tonnage requirements, preventing efficiency loss.
- OEM Compatibility: As a genuine Lennox 100484-15 part, it ensures a seamless fit in Lennox evaporator coils without the need for field modifications.
- System Reliability: Engineered for durability, reducing the risk of clogging or orifice erosion that can lead to unbalanced refrigerant cycles.
- Simplified Installation: Designed for standard liquid line strainers and orifice housings, making it a straightforward HVAC piston replacement for field techs.
- How do I verify if a .065 piston is correct for my unit? Always refer to the outdoor unit's charging chart or the indoor coil's specification plate; the Lennox 10W99 is typically matched based on system tonnage and SEER rating.
- Can this piston be used with R-410A systems? Yes, this Lennox piston kit is constructed to handle the pressures associated with R-410A refrigerant when installed in compatible Lennox metering housings.
- Does the kit include the O-ring or Teflon seal? This kit contains the primary .065 orifice piston; it is recommended to inspect the housing seat and seals during any metering device service to ensure a leak-free fit.
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: $11.94
-65%$11.94
$4.18Lennox 10W99 Piston Kit
For field technicians and contractors maintaining Lennox equipment, the Lennox 10W99 Piston Kit is a critical OEM refrigerant metering device designed for precise flow regulation. Featuring a .065 orifice size, this factory-authorized assembly ensures your split system air conditioner or heat pump operates at peak efficiency by providing accurate thermal expansion control. Unlike generic alternatives, the 10W99 piston orifice (also identified as Lennox 100484-15) is engineered to survive the high-pressure demands of modern refrigerants while maintaining consistent saturation levels across the evaporator coil. Whether you are performing a SEER-rated system upgrade or a standard liquid line service repair, using the correct metering piston is essential to prevent floodback and ensure the longevity of the compressor. This kit is a direct replacement for Lennox residential HVAC units requiring specific tonnage-to-orifice matching, providing the reliability needed for professional-grade installations.
Key Benefits- Optimized Refrigerant Flow: The .065 orifice size is precision-machined to ensure exact metering for specific tonnage requirements, preventing efficiency loss.
- OEM Compatibility: As a genuine Lennox 100484-15 part, it ensures a seamless fit in Lennox evaporator coils without the need for field modifications.
- System Reliability: Engineered for durability, reducing the risk of clogging or orifice erosion that can lead to unbalanced refrigerant cycles.
- Simplified Installation: Designed for standard liquid line strainers and orifice housings, making it a straightforward HVAC piston replacement for field techs.
- How do I verify if a .065 piston is correct for my unit? Always refer to the outdoor unit's charging chart or the indoor coil's specification plate; the Lennox 10W99 is typically matched based on system tonnage and SEER rating.
- Can this piston be used with R-410A systems? Yes, this Lennox piston kit is constructed to handle the pressures associated with R-410A refrigerant when installed in compatible Lennox metering housings.
- Does the kit include the O-ring or Teflon seal? This kit contains the primary .065 orifice piston; it is recommended to inspect the housing seat and seals during any metering device service to ensure a leak-free fit.
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
For field technicians and contractors maintaining Lennox equipment, the Lennox 10W99 Piston Kit is a critical OEM refrigerant metering device designed for precise flow regulation. Featuring a .065 orifice size, this factory-authorized assembly ensures your split system air conditioner or heat pump operates at peak efficiency by providing accurate thermal expansion control. Unlike generic alternatives, the 10W99 piston orifice (also identified as Lennox 100484-15) is engineered to survive the high-pressure demands of modern refrigerants while maintaining consistent saturation levels across the evaporator coil. Whether you are performing a SEER-rated system upgrade or a standard liquid line service repair, using the correct metering piston is essential to prevent floodback and ensure the longevity of the compressor. This kit is a direct replacement for Lennox residential HVAC units requiring specific tonnage-to-orifice matching, providing the reliability needed for professional-grade installations.
Key Benefits- Optimized Refrigerant Flow: The .065 orifice size is precision-machined to ensure exact metering for specific tonnage requirements, preventing efficiency loss.
- OEM Compatibility: As a genuine Lennox 100484-15 part, it ensures a seamless fit in Lennox evaporator coils without the need for field modifications.
- System Reliability: Engineered for durability, reducing the risk of clogging or orifice erosion that can lead to unbalanced refrigerant cycles.
- Simplified Installation: Designed for standard liquid line strainers and orifice housings, making it a straightforward HVAC piston replacement for field techs.
- How do I verify if a .065 piston is correct for my unit? Always refer to the outdoor unit's charging chart or the indoor coil's specification plate; the Lennox 10W99 is typically matched based on system tonnage and SEER rating.
- Can this piston be used with R-410A systems? Yes, this Lennox piston kit is constructed to handle the pressures associated with R-410A refrigerant when installed in compatible Lennox metering housings.
- Does the kit include the O-ring or Teflon seal? This kit contains the primary .065 orifice piston; it is recommended to inspect the housing seat and seals during any metering device service to ensure a leak-free fit.
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.












