
Lennox 48L28 Collector Box
When you are performing a secondary heat exchanger repair or addressing combustion air issues, the Lennox 48L28 Collector Box Gasket is a critical component for restoring the integrity of the flue gas collection system. This genuine OEM Lennox replacement part is engineered to provide a high-temperature, airtight seal between the collector box and the blower deck or indoor coil assembly. Maintaining a precise seal at the collector box base is essential to prevent unintended air bypass and ensure that the induced draft motor maintains the correct static pressure within the venting system.
The 48L28 is fabricated from heat-resistant gasket material designed to withstand the caustic environment of condensing furnaces where acidic condensate is present. This HVAC collector box seal effectively bridges the junction between critical furnace components, preventing leaks that could otherwise lead to pressure switch trips or rollout issues. For field technicians, utilizing the correct Lennox furnace 48L28 gasket ensures that the combustion blower assembly operates at factory-specified efficiency levels while protecting the surrounding cabinet from moisture-related corrosion.
Key Benefits for Technicians:- OEM Precision: Guaranteed fit for Lennox induced draft systems, eliminating the need for messy RTV silicone or field-fabricated seals.
- Enhanced Durability: Constructed from industrial-grade elastomeric material to resist degradation from high-temperature flue gases.
- System Efficiency: Prevents vacuum loss at the collector box, ensuring stable pressure switch readings and reliable ignition cycles.
- Direct Compatibility: Engineered specifically for Lennox high-efficiency condensing units requiring the 48L28 form factor.
What are the signs that a collector box gasket needs replacement?
Inspect for visible white residue (calcification) around the edges of the box, moisture pooling on the blower deck, or frequent pressure switch codes (e.g., Code 2 or 3) during the start-up sequence.
Does this gasket require additional sealant during installation?
This Lennox 48L28 is designed as a dry-fit gasket. Ensure all mating surfaces are thoroughly cleaned of old adhesive or debris to achieve a professional-grade mechanical seal.
Is this part compatible with other furnace brands?
This is an OEM part designed for Lennox and Allied Air platforms. Always verify the part number against the specific furnace model and serial number before installation.
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: $14.68
-65%$14.68
$5.14Lennox 48L28 Collector Box
When you are performing a secondary heat exchanger repair or addressing combustion air issues, the Lennox 48L28 Collector Box Gasket is a critical component for restoring the integrity of the flue gas collection system. This genuine OEM Lennox replacement part is engineered to provide a high-temperature, airtight seal between the collector box and the blower deck or indoor coil assembly. Maintaining a precise seal at the collector box base is essential to prevent unintended air bypass and ensure that the induced draft motor maintains the correct static pressure within the venting system.
The 48L28 is fabricated from heat-resistant gasket material designed to withstand the caustic environment of condensing furnaces where acidic condensate is present. This HVAC collector box seal effectively bridges the junction between critical furnace components, preventing leaks that could otherwise lead to pressure switch trips or rollout issues. For field technicians, utilizing the correct Lennox furnace 48L28 gasket ensures that the combustion blower assembly operates at factory-specified efficiency levels while protecting the surrounding cabinet from moisture-related corrosion.
Key Benefits for Technicians:- OEM Precision: Guaranteed fit for Lennox induced draft systems, eliminating the need for messy RTV silicone or field-fabricated seals.
- Enhanced Durability: Constructed from industrial-grade elastomeric material to resist degradation from high-temperature flue gases.
- System Efficiency: Prevents vacuum loss at the collector box, ensuring stable pressure switch readings and reliable ignition cycles.
- Direct Compatibility: Engineered specifically for Lennox high-efficiency condensing units requiring the 48L28 form factor.
What are the signs that a collector box gasket needs replacement?
Inspect for visible white residue (calcification) around the edges of the box, moisture pooling on the blower deck, or frequent pressure switch codes (e.g., Code 2 or 3) during the start-up sequence.
Does this gasket require additional sealant during installation?
This Lennox 48L28 is designed as a dry-fit gasket. Ensure all mating surfaces are thoroughly cleaned of old adhesive or debris to achieve a professional-grade mechanical seal.
Is this part compatible with other furnace brands?
This is an OEM part designed for Lennox and Allied Air platforms. Always verify the part number against the specific furnace model and serial number before installation.
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
When you are performing a secondary heat exchanger repair or addressing combustion air issues, the Lennox 48L28 Collector Box Gasket is a critical component for restoring the integrity of the flue gas collection system. This genuine OEM Lennox replacement part is engineered to provide a high-temperature, airtight seal between the collector box and the blower deck or indoor coil assembly. Maintaining a precise seal at the collector box base is essential to prevent unintended air bypass and ensure that the induced draft motor maintains the correct static pressure within the venting system.
The 48L28 is fabricated from heat-resistant gasket material designed to withstand the caustic environment of condensing furnaces where acidic condensate is present. This HVAC collector box seal effectively bridges the junction between critical furnace components, preventing leaks that could otherwise lead to pressure switch trips or rollout issues. For field technicians, utilizing the correct Lennox furnace 48L28 gasket ensures that the combustion blower assembly operates at factory-specified efficiency levels while protecting the surrounding cabinet from moisture-related corrosion.
Key Benefits for Technicians:- OEM Precision: Guaranteed fit for Lennox induced draft systems, eliminating the need for messy RTV silicone or field-fabricated seals.
- Enhanced Durability: Constructed from industrial-grade elastomeric material to resist degradation from high-temperature flue gases.
- System Efficiency: Prevents vacuum loss at the collector box, ensuring stable pressure switch readings and reliable ignition cycles.
- Direct Compatibility: Engineered specifically for Lennox high-efficiency condensing units requiring the 48L28 form factor.
What are the signs that a collector box gasket needs replacement?
Inspect for visible white residue (calcification) around the edges of the box, moisture pooling on the blower deck, or frequent pressure switch codes (e.g., Code 2 or 3) during the start-up sequence.
Does this gasket require additional sealant during installation?
This Lennox 48L28 is designed as a dry-fit gasket. Ensure all mating surfaces are thoroughly cleaned of old adhesive or debris to achieve a professional-grade mechanical seal.
Is this part compatible with other furnace brands?
This is an OEM part designed for Lennox and Allied Air platforms. Always verify the part number against the specific furnace model and serial number before installation.
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.












