
Lennox 11W00 Piston Assembly
The Lennox 11W00 Piston Assembly is a precision-engineered .067 fixed orifice metering device designed for consistent refrigerant flow control in Lennox and Allied Air residential cooling systems. Engineered for high-pressure durability, this HVAC expansion piston ensures optimal evaporator coil performance by maintaining the necessary pressure drop between the liquid line and the coil. Whether you are performing a dry-charge unit installation or replacing a worn metering component, the 11W00 provides the exact 0.067-inch bore diameter required for specific BTU capacities. This assembly features a robust construction to resist debris-related clogging and ensures reliable refrigerant flow regulation under varying thermal loads. As a critical component in Lennox OEM replacement parts, it maintains system balance and prevents liquid slugging, protecting the compressor while ensuring the system hits its design SEER ratings. Rely on this refrigerant metering piston for seamless compatibility and professional-grade performance in demanding HVACR applications.
- Precise Flow Control: The .067 orifice size provides calibrated refrigerant delivery for consistent superheat levels.
- OEM Compatibility: Specifically engineered for Lennox 11W00 applications, ensuring a perfect seat within the distributor body.
- Durable Construction: High-grade materials resist erosion and thermal stress in both R-410A and R-22 environments.
- System Efficiency: Minimizes pressure fluctuations to maintain peak cooling capacity and energy efficiency.
Common Contractor Questions:
What tonnage is a .067 piston rated for?
The Lennox .067 piston size is typically utilized in 2.0 to 2.5-ton systems, though you must always verify the specific Lennox piston compatibility chart for the outdoor unit match-up.
Can this be used for both R-22 and R-410A systems?
Yes, the 11W00 piston assembly is compatible with various refrigerants; however, the orifice size is the determining factor for performance based on the specific evaporator and condenser pairing.
How do I ensure a leak-free installation?
Ensure the piston assembly is seated correctly in the flow rater body and inspect the Teflon ring for any nicks or debris before reassembling the liquid line connection.
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 11W00 Piston Assembly
The Lennox 11W00 Piston Assembly is a precision-engineered .067 fixed orifice metering device designed for consistent refrigerant flow control in Lennox and Allied Air residential cooling systems. Engineered for high-pressure durability, this HVAC expansion piston ensures optimal evaporator coil performance by maintaining the necessary pressure drop between the liquid line and the coil. Whether you are performing a dry-charge unit installation or replacing a worn metering component, the 11W00 provides the exact 0.067-inch bore diameter required for specific BTU capacities. This assembly features a robust construction to resist debris-related clogging and ensures reliable refrigerant flow regulation under varying thermal loads. As a critical component in Lennox OEM replacement parts, it maintains system balance and prevents liquid slugging, protecting the compressor while ensuring the system hits its design SEER ratings. Rely on this refrigerant metering piston for seamless compatibility and professional-grade performance in demanding HVACR applications.
- Precise Flow Control: The .067 orifice size provides calibrated refrigerant delivery for consistent superheat levels.
- OEM Compatibility: Specifically engineered for Lennox 11W00 applications, ensuring a perfect seat within the distributor body.
- Durable Construction: High-grade materials resist erosion and thermal stress in both R-410A and R-22 environments.
- System Efficiency: Minimizes pressure fluctuations to maintain peak cooling capacity and energy efficiency.
Common Contractor Questions:
What tonnage is a .067 piston rated for?
The Lennox .067 piston size is typically utilized in 2.0 to 2.5-ton systems, though you must always verify the specific Lennox piston compatibility chart for the outdoor unit match-up.
Can this be used for both R-22 and R-410A systems?
Yes, the 11W00 piston assembly is compatible with various refrigerants; however, the orifice size is the determining factor for performance based on the specific evaporator and condenser pairing.
How do I ensure a leak-free installation?
Ensure the piston assembly is seated correctly in the flow rater body and inspect the Teflon ring for any nicks or debris before reassembling the liquid line connection.
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
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Description
The Lennox 11W00 Piston Assembly is a precision-engineered .067 fixed orifice metering device designed for consistent refrigerant flow control in Lennox and Allied Air residential cooling systems. Engineered for high-pressure durability, this HVAC expansion piston ensures optimal evaporator coil performance by maintaining the necessary pressure drop between the liquid line and the coil. Whether you are performing a dry-charge unit installation or replacing a worn metering component, the 11W00 provides the exact 0.067-inch bore diameter required for specific BTU capacities. This assembly features a robust construction to resist debris-related clogging and ensures reliable refrigerant flow regulation under varying thermal loads. As a critical component in Lennox OEM replacement parts, it maintains system balance and prevents liquid slugging, protecting the compressor while ensuring the system hits its design SEER ratings. Rely on this refrigerant metering piston for seamless compatibility and professional-grade performance in demanding HVACR applications.
- Precise Flow Control: The .067 orifice size provides calibrated refrigerant delivery for consistent superheat levels.
- OEM Compatibility: Specifically engineered for Lennox 11W00 applications, ensuring a perfect seat within the distributor body.
- Durable Construction: High-grade materials resist erosion and thermal stress in both R-410A and R-22 environments.
- System Efficiency: Minimizes pressure fluctuations to maintain peak cooling capacity and energy efficiency.
Common Contractor Questions:
What tonnage is a .067 piston rated for?
The Lennox .067 piston size is typically utilized in 2.0 to 2.5-ton systems, though you must always verify the specific Lennox piston compatibility chart for the outdoor unit match-up.
Can this be used for both R-22 and R-410A systems?
Yes, the 11W00 piston assembly is compatible with various refrigerants; however, the orifice size is the determining factor for performance based on the specific evaporator and condenser pairing.
How do I ensure a leak-free installation?
Ensure the piston assembly is seated correctly in the flow rater body and inspect the Teflon ring for any nicks or debris before reassembling the liquid line connection.
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.












