
Lennox 49K67 Gasket
When you're dealing with a mid-efficiency or high-efficiency furnace, a leaking Lennox 49K67 is often the silent culprit behind pressure switch trips and secondary heat exchanger issues. This OEM collector box gasket is engineered specifically for Lennox HVAC systems, including the 90UGFA, G26Q, and G32 series. As technicians, we know that reusing a compressed or degraded gasket during a PM or heat exchanger inspection is asking for a callback. This 3.5-inch square high-resistance composite gasket provides the critical seal required between the cold end header box and the induction housing, preventing corrosive condensate from entering the burner vestibule or damaging the inducer motor bearings. Maintaining a tight combustion seal is non-negotiable for system safety and airflow control. Whether you are performing a furnace component replacement or resolving a "whistling" air leak, this genuine Lennox part ensures the unit operates at its rated AFUE by containing combustion byproducts within the flue path.
Key Benefits for the Contractor:- OEM Compatibility: Precision-cut for an exact fit on Lennox G26, G32, and 90UGFA furnace models.
- Thermal Resistance: Manufactured from high-grade composite material to withstand constant heat cycling and acidic condensate exposure.
- Leak Prevention: Eliminates common air and nitrogen-enriched gas bypass at the collector box interface.
- System Integrity: Vital for maintaining proper static pressure and preventing inducer assembly vibration issues.
Does this gasket require additional RTV silicone during installation?
No, this high-performance gasket is designed for a dry seal. Applying RTV or pipe dope can interfere with the uniform compression required to seal the collector box against the cell panel.
Will a failed collector box gasket cause a pressure switch error?
Yes. If the Lennox 49K67 is compromised, air bypass can prevent the inducer from reaching the necessary negative pressure to close the switch, often resulting in a "Code 2" or "Code 3" lockout.
Can this gasket be used on other brands like Armstrong or Concord?
Since Lennox is the parent company for Armstrong and Concord, this 49K67 thermal gasket is often interchangeable on many of their high-efficiency condensing units. Always verify the part number in the specific model’s service manual.
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: $27.01
-65%$27.01
$9.45Lennox 49K67 Gasket
When you're dealing with a mid-efficiency or high-efficiency furnace, a leaking Lennox 49K67 is often the silent culprit behind pressure switch trips and secondary heat exchanger issues. This OEM collector box gasket is engineered specifically for Lennox HVAC systems, including the 90UGFA, G26Q, and G32 series. As technicians, we know that reusing a compressed or degraded gasket during a PM or heat exchanger inspection is asking for a callback. This 3.5-inch square high-resistance composite gasket provides the critical seal required between the cold end header box and the induction housing, preventing corrosive condensate from entering the burner vestibule or damaging the inducer motor bearings. Maintaining a tight combustion seal is non-negotiable for system safety and airflow control. Whether you are performing a furnace component replacement or resolving a "whistling" air leak, this genuine Lennox part ensures the unit operates at its rated AFUE by containing combustion byproducts within the flue path.
Key Benefits for the Contractor:- OEM Compatibility: Precision-cut for an exact fit on Lennox G26, G32, and 90UGFA furnace models.
- Thermal Resistance: Manufactured from high-grade composite material to withstand constant heat cycling and acidic condensate exposure.
- Leak Prevention: Eliminates common air and nitrogen-enriched gas bypass at the collector box interface.
- System Integrity: Vital for maintaining proper static pressure and preventing inducer assembly vibration issues.
Does this gasket require additional RTV silicone during installation?
No, this high-performance gasket is designed for a dry seal. Applying RTV or pipe dope can interfere with the uniform compression required to seal the collector box against the cell panel.
Will a failed collector box gasket cause a pressure switch error?
Yes. If the Lennox 49K67 is compromised, air bypass can prevent the inducer from reaching the necessary negative pressure to close the switch, often resulting in a "Code 2" or "Code 3" lockout.
Can this gasket be used on other brands like Armstrong or Concord?
Since Lennox is the parent company for Armstrong and Concord, this 49K67 thermal gasket is often interchangeable on many of their high-efficiency condensing units. Always verify the part number in the specific model’s service manual.
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
When you're dealing with a mid-efficiency or high-efficiency furnace, a leaking Lennox 49K67 is often the silent culprit behind pressure switch trips and secondary heat exchanger issues. This OEM collector box gasket is engineered specifically for Lennox HVAC systems, including the 90UGFA, G26Q, and G32 series. As technicians, we know that reusing a compressed or degraded gasket during a PM or heat exchanger inspection is asking for a callback. This 3.5-inch square high-resistance composite gasket provides the critical seal required between the cold end header box and the induction housing, preventing corrosive condensate from entering the burner vestibule or damaging the inducer motor bearings. Maintaining a tight combustion seal is non-negotiable for system safety and airflow control. Whether you are performing a furnace component replacement or resolving a "whistling" air leak, this genuine Lennox part ensures the unit operates at its rated AFUE by containing combustion byproducts within the flue path.
Key Benefits for the Contractor:- OEM Compatibility: Precision-cut for an exact fit on Lennox G26, G32, and 90UGFA furnace models.
- Thermal Resistance: Manufactured from high-grade composite material to withstand constant heat cycling and acidic condensate exposure.
- Leak Prevention: Eliminates common air and nitrogen-enriched gas bypass at the collector box interface.
- System Integrity: Vital for maintaining proper static pressure and preventing inducer assembly vibration issues.
Does this gasket require additional RTV silicone during installation?
No, this high-performance gasket is designed for a dry seal. Applying RTV or pipe dope can interfere with the uniform compression required to seal the collector box against the cell panel.
Will a failed collector box gasket cause a pressure switch error?
Yes. If the Lennox 49K67 is compromised, air bypass can prevent the inducer from reaching the necessary negative pressure to close the switch, often resulting in a "Code 2" or "Code 3" lockout.
Can this gasket be used on other brands like Armstrong or Concord?
Since Lennox is the parent company for Armstrong and Concord, this 49K67 thermal gasket is often interchangeable on many of their high-efficiency condensing units. Always verify the part number in the specific model’s service manual.
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.












