For over 50 years, K&N has been the industry leader in washable automotive filtration. Now K&N has an exciting new product for your home: Lifetime Washable Home Air Filters!


washing dirty home air filter


Installing a washable, reusable air filter can help save you money over disposable filters—which must be frequently repurchased (approximately every 90 days in the average suburban home, and every 60 days or sooner if you have pets). Instead of fully replacing your filter several times a year (which can be very costly), simply wash and reinstall your new K&N® lifetime washable home air filter in your cooling and heating system.

little girl with puppy


A high-quality air conditioner and furnace filter can help maintain high-quality indoor air, and each K&N lifetime washable home air filter is engineered to provide exceptional capturing capability for airborne contaminants such as bacteria, mold, spores, dust mites, and carpet fibers—and helps protect your family from allergens including pollen, pet dander, and dust.

A/C unit duct


High airflow helps reduce strain on your heating and cooling system and requires less energy, which can translate to savings for you! When a filter becomes extremely clogged, airflow through the filter begins to slow, which can force an HVAC system to work harder to compensate. Replacing a disposable filter every 60-90 days can be inconvenient and expensive—instead, you can simply rinse clean your K&N lifetime washable furnace filter to help keep your HVAC system running smoothly.

installing washable furnace filter


Each K&N washable home air filter is designed to fit directly into your heating and air conditioning filter slot just as easily as a typical disposable air filter, with multiple dimensions and sizes available for easy installation.

washable air condition filter


Washing your K&N washable air filter is as simple as removing your filter from its housing, spraying on K&N home air filter cleaner (part no. 99-6010), and rinsing with a low-pressure hose! After your filter is dry, simply reinstall to enjoy the benefits of K&N’s industry-leading washable filtration technology. See the full instructions included with your filter for details.

home filter helps remove dust and allergens


You may not realize that the air inside your home can be even dirtier than the air outside in the environment, and a high-quality air conditioning and furnace filter can help improve the quality of the air that you breathe! Each K&N lifetime washable home furnace filter is engineered to provide exceptional capturing capability for airborne contaminants such as bacteria, mold, spores, dust mites, and carpet fibers—and helps protect your family from allergens including pollen, pet dander, and dust.



Follow this link to select and purchase available K&N® home filters in your required size. If you aren’t sure of the size you need, you can examine your current HVAC filter for its dimensions, or measure your home air filter housing.

Please follow this link and scroll down to fill out our information form. We will likely be adding highly requested filter sizes to the line in the future.

K&N® home air filters are manufactured at MERV 11 (minimum efficiency rated value). Filters rated at MERV 11 (according to the National Air Filtration Association) help filter dust, hair, plant spores, pet dander, mold spores, cement dust, insecticide dust, pollen, dust mites, bacteria, and tobacco smoke.

The frame is composed of durable extruded ABS copolymer, specifically designed to last for the long lifespan of the filter.

K&N® home air filters feature non-woven pleated synthetic filter media sandwiched between two nylon mesh screens for added structural support. The filter material is backed with a screen of galvanized mild steel mesh for added stability.

Static pressures frequently vary from unit-to-unit, as ducting and other factors aside from the filter can influence pressure readings.

Your individual cleaning interval will depend on home conditions—including the number of occupants and pets in your home—but should generally range from 60 to 90 days. If you have multiple pets or allergy-sensitive people in your home, it is advisable to clean your filter more often.

Cleaning is usually quick and easy. Please follow this link to the detailed cleaning instructions.

No. K&N® home air filters do not require any oil, and are sold ready to install.

Your K&N® home air filter is designed to be washed and reinstalled as often as reasonably necessary.

Installing a clean filter can help reduce HVAC system strain and may require less energy than a more restrictive or dirty filter. K&N® home air filters are washable and reusable, allowing you to restore your filter’s performance quickly and easily.

Yes. As part of the manufacturing process, the filter media is electrostatically charged for additional particle capturing capability.

Yes, they are protected by K&N’s Lifetime Limited Warranty.

In keeping with industry standards, each filter is manufactured slightly smaller than the dimensions shown on the box, allowing room for hardware and register size variances.



K&N is the home of the original red oiled air filter. In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N), developed a ground-breaking new idea for an oiled air filter. Five decades later, K&N® is still innovating industry-leading filtration technology, and offers outstanding protection for everything from top-fuel dragsters to commuter vehicles across the globe. Thank you for helping us reach 50 years in business!



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