Lennox 59436 Air Filter
The Lennox 59436 Air Filter is a heavy-duty 20x25x1 washable air filter designed specifically for demanding commercial and industrial HVACR environments. Engineered for precision fitment in Lennox economizer sections and rooftop units, this OEM replacement filter (also cataloged as Lennox P-8-7831) utilizes a washable foam or aluminum mesh media to provide high-efficiency pre-filtration. Its synthetic material construction is optimized for a MERV 10 rating, ensuring the capture of dust, pollen, and airborne debris to protect sensitive evaporator coils and blower motors from fouling. With its exact nominal dimensions of 20 x 25 x 1, this unit prevents air bypass and maintains static pressure within engineered tolerances, supporting consistent HVAC airflow and system longevity.
Key Benefits- Washable and Reusable Media: High-durability design allows for repeated cleaning, reducing long-term overhead compared to 1-inch disposable filters.
- Precise OEM Fitment: Cross-compatible with part numbers 26H83, 26H8301, and P-8-7831, ensuring zero-gap installation in Lennox equipment.
- Equipment Protection: High particle capture capacity shields secondary filters and coils from heavy particulate, maintaining energy efficiency.
- Industrial Build Quality: Built with a rigid frame to withstand the high-velocity air typical of commercial air handlers and rooftop package units.
Is the Lennox 59436 compatible with other brands?
Yes, this filter often replaces parts in Allied, Armstrong, Concord, and Ducane systems using the P-8-7831 specification. Always verify exact frame measurements before installation.
How often should a 20x25x1 washable filter be cleaned?
In standard commercial settings, we recommend inspecting the media every 30 days. High-dust environments or constant-run applications may require more frequent maintenance to prevent restricted airflow.
Does this filter replace foam or mesh versions?
The 59436 specification encompasses both washable foam and aluminum mesh variants depending on the specific model year of the HVAC unit. Both are designed to provide the same 20x25x1 footprint and high-flow filtration characteristics.
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: $59.97
-65%$59.97
$20.99Lennox 59436 Air Filter
The Lennox 59436 Air Filter is a heavy-duty 20x25x1 washable air filter designed specifically for demanding commercial and industrial HVACR environments. Engineered for precision fitment in Lennox economizer sections and rooftop units, this OEM replacement filter (also cataloged as Lennox P-8-7831) utilizes a washable foam or aluminum mesh media to provide high-efficiency pre-filtration. Its synthetic material construction is optimized for a MERV 10 rating, ensuring the capture of dust, pollen, and airborne debris to protect sensitive evaporator coils and blower motors from fouling. With its exact nominal dimensions of 20 x 25 x 1, this unit prevents air bypass and maintains static pressure within engineered tolerances, supporting consistent HVAC airflow and system longevity.
Key Benefits- Washable and Reusable Media: High-durability design allows for repeated cleaning, reducing long-term overhead compared to 1-inch disposable filters.
- Precise OEM Fitment: Cross-compatible with part numbers 26H83, 26H8301, and P-8-7831, ensuring zero-gap installation in Lennox equipment.
- Equipment Protection: High particle capture capacity shields secondary filters and coils from heavy particulate, maintaining energy efficiency.
- Industrial Build Quality: Built with a rigid frame to withstand the high-velocity air typical of commercial air handlers and rooftop package units.
Is the Lennox 59436 compatible with other brands?
Yes, this filter often replaces parts in Allied, Armstrong, Concord, and Ducane systems using the P-8-7831 specification. Always verify exact frame measurements before installation.
How often should a 20x25x1 washable filter be cleaned?
In standard commercial settings, we recommend inspecting the media every 30 days. High-dust environments or constant-run applications may require more frequent maintenance to prevent restricted airflow.
Does this filter replace foam or mesh versions?
The 59436 specification encompasses both washable foam and aluminum mesh variants depending on the specific model year of the HVAC unit. Both are designed to provide the same 20x25x1 footprint and high-flow filtration characteristics.
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 59436 Air Filter is a heavy-duty 20x25x1 washable air filter designed specifically for demanding commercial and industrial HVACR environments. Engineered for precision fitment in Lennox economizer sections and rooftop units, this OEM replacement filter (also cataloged as Lennox P-8-7831) utilizes a washable foam or aluminum mesh media to provide high-efficiency pre-filtration. Its synthetic material construction is optimized for a MERV 10 rating, ensuring the capture of dust, pollen, and airborne debris to protect sensitive evaporator coils and blower motors from fouling. With its exact nominal dimensions of 20 x 25 x 1, this unit prevents air bypass and maintains static pressure within engineered tolerances, supporting consistent HVAC airflow and system longevity.
Key Benefits- Washable and Reusable Media: High-durability design allows for repeated cleaning, reducing long-term overhead compared to 1-inch disposable filters.
- Precise OEM Fitment: Cross-compatible with part numbers 26H83, 26H8301, and P-8-7831, ensuring zero-gap installation in Lennox equipment.
- Equipment Protection: High particle capture capacity shields secondary filters and coils from heavy particulate, maintaining energy efficiency.
- Industrial Build Quality: Built with a rigid frame to withstand the high-velocity air typical of commercial air handlers and rooftop package units.
Is the Lennox 59436 compatible with other brands?
Yes, this filter often replaces parts in Allied, Armstrong, Concord, and Ducane systems using the P-8-7831 specification. Always verify exact frame measurements before installation.
How often should a 20x25x1 washable filter be cleaned?
In standard commercial settings, we recommend inspecting the media every 30 days. High-dust environments or constant-run applications may require more frequent maintenance to prevent restricted airflow.
Does this filter replace foam or mesh versions?
The 59436 specification encompasses both washable foam and aluminum mesh variants depending on the specific model year of the HVAC unit. Both are designed to provide the same 20x25x1 footprint and high-flow filtration characteristics.
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.
