
Lennox 17F26 Collector Box
The Lennox 17F26 Collector Box, also known as the cold end header box kit (MPN 619598-26), is a critical OEM replacement component for high-efficiency condensing furnaces, including the Lennox EL296 series and various G71MPP units. This collector box is engineered to manage the transition of flue gases and the resulting corrosive condensate from the secondary heat exchanger to the drain lines. A common failure point in aging systems occurs when the original header box develops hairline cracks or internal blockages, leading to pressure switch trips and furnace lockout. This genuine furnace collector box replacement ensures a watertight seal and proper condensate management, protecting the combustion air inducer and heat exchanger from moisture-related damage. Replacing a compromised 17F26 restores the integrity of the furnace drainage system, maintaining the precise static pressure required for consistent ignition and high-efficiency operation in residential and commercial Lennox HVAC platforms.
Key Benefits:- OEM Compatibility: Specifically engineered for a precise fit in Lennox EL296 and other compatible condensing gas furnaces.
- Enhanced Condensate Drainage: Optimized internal baffling prevents moisture backup and potential damage to the inducer motor.
- Improved Pressure Stability: Restores reliable pressure switch performance by eliminating vacuum leaks common in cracked aftermarket alternatives.
- High-Durability Construction: Manufactured using chemical-resistant materials to withstand the acidic nature of 90%+ furnace condensate.
How do I know if my Lennox furnace needs a new collector box?
Technicians typically diagnose a faulty 17F26 when there is visible water leakage at the base of the secondary heat exchanger or when a "Pressure Switch Stuck Open" fault code persists despite a functional inducer and clear vent piping.
Is the 17F26 compatible with EL296V models?
Yes, this Lennox HVAC repair part is the standard replacement for the EL296 and several other 2-stage variable speed models across the Elite and Dave Lennox Signature Collections.
Does this kit include the necessary gaskets?
This part is generally supplied as the header box unit; professionals should always verify the condition of existing seals and use high-temperature RTV or specific Lennox gasket kits during installation to ensure a gas-tight seal.
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: $114.64
-65%$114.64
$40.12Lennox 17F26 Collector Box
The Lennox 17F26 Collector Box, also known as the cold end header box kit (MPN 619598-26), is a critical OEM replacement component for high-efficiency condensing furnaces, including the Lennox EL296 series and various G71MPP units. This collector box is engineered to manage the transition of flue gases and the resulting corrosive condensate from the secondary heat exchanger to the drain lines. A common failure point in aging systems occurs when the original header box develops hairline cracks or internal blockages, leading to pressure switch trips and furnace lockout. This genuine furnace collector box replacement ensures a watertight seal and proper condensate management, protecting the combustion air inducer and heat exchanger from moisture-related damage. Replacing a compromised 17F26 restores the integrity of the furnace drainage system, maintaining the precise static pressure required for consistent ignition and high-efficiency operation in residential and commercial Lennox HVAC platforms.
Key Benefits:- OEM Compatibility: Specifically engineered for a precise fit in Lennox EL296 and other compatible condensing gas furnaces.
- Enhanced Condensate Drainage: Optimized internal baffling prevents moisture backup and potential damage to the inducer motor.
- Improved Pressure Stability: Restores reliable pressure switch performance by eliminating vacuum leaks common in cracked aftermarket alternatives.
- High-Durability Construction: Manufactured using chemical-resistant materials to withstand the acidic nature of 90%+ furnace condensate.
How do I know if my Lennox furnace needs a new collector box?
Technicians typically diagnose a faulty 17F26 when there is visible water leakage at the base of the secondary heat exchanger or when a "Pressure Switch Stuck Open" fault code persists despite a functional inducer and clear vent piping.
Is the 17F26 compatible with EL296V models?
Yes, this Lennox HVAC repair part is the standard replacement for the EL296 and several other 2-stage variable speed models across the Elite and Dave Lennox Signature Collections.
Does this kit include the necessary gaskets?
This part is generally supplied as the header box unit; professionals should always verify the condition of existing seals and use high-temperature RTV or specific Lennox gasket kits during installation to ensure a gas-tight seal.
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 17F26 Collector Box, also known as the cold end header box kit (MPN 619598-26), is a critical OEM replacement component for high-efficiency condensing furnaces, including the Lennox EL296 series and various G71MPP units. This collector box is engineered to manage the transition of flue gases and the resulting corrosive condensate from the secondary heat exchanger to the drain lines. A common failure point in aging systems occurs when the original header box develops hairline cracks or internal blockages, leading to pressure switch trips and furnace lockout. This genuine furnace collector box replacement ensures a watertight seal and proper condensate management, protecting the combustion air inducer and heat exchanger from moisture-related damage. Replacing a compromised 17F26 restores the integrity of the furnace drainage system, maintaining the precise static pressure required for consistent ignition and high-efficiency operation in residential and commercial Lennox HVAC platforms.
Key Benefits:- OEM Compatibility: Specifically engineered for a precise fit in Lennox EL296 and other compatible condensing gas furnaces.
- Enhanced Condensate Drainage: Optimized internal baffling prevents moisture backup and potential damage to the inducer motor.
- Improved Pressure Stability: Restores reliable pressure switch performance by eliminating vacuum leaks common in cracked aftermarket alternatives.
- High-Durability Construction: Manufactured using chemical-resistant materials to withstand the acidic nature of 90%+ furnace condensate.
How do I know if my Lennox furnace needs a new collector box?
Technicians typically diagnose a faulty 17F26 when there is visible water leakage at the base of the secondary heat exchanger or when a "Pressure Switch Stuck Open" fault code persists despite a functional inducer and clear vent piping.
Is the 17F26 compatible with EL296V models?
Yes, this Lennox HVAC repair part is the standard replacement for the EL296 and several other 2-stage variable speed models across the Elite and Dave Lennox Signature Collections.
Does this kit include the necessary gaskets?
This part is generally supplied as the header box unit; professionals should always verify the condition of existing seals and use high-temperature RTV or specific Lennox gasket kits during installation to ensure a gas-tight seal.
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.












