Lennox 25W78 Insert
The Lennox 25W78 NOx Insert is a critical combustion component engineered specifically for Lennox gas furnaces to reduce nitrogen oxide emissions. Designed for high-efficiency heating systems, this OEM Lennox replacement part ensures that the burner assembly maintains optimal fuel-to-air ratios for a cleaner, more environmentally compliant burn. Constructed from heavy-duty steel to withstand high-temperature furnace environments, the 25W78 insert (also identified by part number 101128-01) is essential for technicians performing furnace heat exchanger repair or addressing emission-related performance issues. By utilizing precise internal geometry, this low NOx insert mitigates the production of pollutants during the combustion cycle without compromising the thermal output of the heat exchanger. For contractors, installing this genuine HVAC combustion part ensures a precise fit and helps avoid the recurring nuisance trips or premature component degradation associated with substandard aftermarket alternatives.
Key Benefits for Technicians- Environmental Compliance: Specifically designed to meet stringent nitrogen oxide (NOx) emission standards in regulated regions.
- Durable Construction: Fabricated from high-grade steel to resist thermal stress and oxidation within the burner box.
- Exact OEM Fit: Eliminates the need for field modifications, ensuring a fast and secure slide-in installation.
- System Efficiency: Maintains the intended airflow and combustion characteristics of the original furnace design.
What are the symptoms of a failing Lennox 25W78 insert?
A degraded or warped NOx insert can cause improper flame patterns, increased carbon buildup on the heat exchanger, and potentially trigger flame rollout switches due to disrupted combustion. Visual inspection often reveals physical deformation or heavy scaling.
Is the 25W78 compatible with all Lennox gas furnaces?
No, this insert is specifically used in Lennox low NOx gas furnaces. Always verify the model and serial number of the unit to ensure this 17-inch insert matches the technical requirements of the specific burner assembly.
Does this part impact the furnace's AFUE rating?
While the insert itself does not change the AFUE rating, ensuring it is in good condition allows the furnace to operate at its peak designed efficiency, preventing the heat loss associated with poor combustion.
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
The Lennox 25W78 NOx Insert is a critical combustion component engineered specifically for Lennox gas furnaces to reduce nitrogen oxide emissions. Designed for high-efficiency heating systems, this OEM Lennox replacement part ensures that the burner assembly maintains optimal fuel-to-air ratios for a cleaner, more environmentally compliant burn. Constructed from heavy-duty steel to withstand high-temperature furnace environments, the 25W78 insert (also identified by part number 101128-01) is essential for technicians performing furnace heat exchanger repair or addressing emission-related performance issues. By utilizing precise internal geometry, this low NOx insert mitigates the production of pollutants during the combustion cycle without compromising the thermal output of the heat exchanger. For contractors, installing this genuine HVAC combustion part ensures a precise fit and helps avoid the recurring nuisance trips or premature component degradation associated with substandard aftermarket alternatives.
Key Benefits for Technicians- Environmental Compliance: Specifically designed to meet stringent nitrogen oxide (NOx) emission standards in regulated regions.
- Durable Construction: Fabricated from high-grade steel to resist thermal stress and oxidation within the burner box.
- Exact OEM Fit: Eliminates the need for field modifications, ensuring a fast and secure slide-in installation.
- System Efficiency: Maintains the intended airflow and combustion characteristics of the original furnace design.
What are the symptoms of a failing Lennox 25W78 insert?
A degraded or warped NOx insert can cause improper flame patterns, increased carbon buildup on the heat exchanger, and potentially trigger flame rollout switches due to disrupted combustion. Visual inspection often reveals physical deformation or heavy scaling.
Is the 25W78 compatible with all Lennox gas furnaces?
No, this insert is specifically used in Lennox low NOx gas furnaces. Always verify the model and serial number of the unit to ensure this 17-inch insert matches the technical requirements of the specific burner assembly.
Does this part impact the furnace's AFUE rating?
While the insert itself does not change the AFUE rating, ensuring it is in good condition allows the furnace to operate at its peak designed efficiency, preventing the heat loss associated with poor combustion.
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.
