• Filtrete™ Allergen Defense Air Filters
  • Filtrete™ Allergen Defense Air Filters

    • Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1" home air filters for your furnace, air conditioner, or HVAC system
    • Exclusive Filtrete™ Brand 3-in-1 technology from 3M traps unwanted air particles, letting cleaner air flow through
    • Available in 800, 1000, 1085 and 1200 MPR (Microparticle Performance Rating) and have a rating of MERV 11
    • 1000 and 1200 MPR also available in 4”, 4” slim fit and 5” air filters
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    Opt for a Filtrete™ Pollen & Pet Dander OR Allergen Defense OR Allergen Defense Extra OR Allergen Reduction Air Filter to transform your central heating and cooling system into a whole-home air filtration operation. This no-nonsense filter helps capture varying sizes of particles, from the large (lint, pollen, dust and pet dander) to the microscopic (smoke and smog).

    • Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1" home air filters for your furnace, air conditioner, or HVAC system
    • Exclusive Filtrete™ Brand 3-in-1 technology from 3M traps unwanted air particles, letting cleaner air flow through
    • Available in 800, 1000, 1085 and 1200 MPR (Microparticle Performance Rating) and have a rating of MERV 11
    • 1000 and 1200 MPR also available in 4”, 4” slim fit and 5” air filters
    • For optimal performance of your heating & cooling system or HVAC system, change your home air filter at least every 90 days for 1” filters, and at least every 12 months for 4” and 5” filters.
    • For residential use only
    • The higher the MPR, the more microparticles - such as pollen, pet dander, smoke, bacteria and viruses - your filter will capture from the air passing through it
    • A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy. Sign-up for a filter change reminder program that works for you!
    Specifications
    Attribute Name
    Value
    Filter Life
    12 Months, 3 Months
    MERV Rating
    MERV 11, MERV 9
    Microparticle Performance Rating
    1000, 1000 / 1085, 1085, 1200, 800
    Package Contents
    1 Pack, 2 Pack, 3 Pack, 4 Pack, 6 Pack
    Size
    10 in x 20 in x 1 in, 10 in x 24 in x 1 in, 11.5 in x 11.5 in x 1 in, 12 in x 12 in x 1 in, 12 in x 20 in x 1 in, 12 in x 24 in x 1 in, 12 in x 25 in x 1 in, 12 in x 30 in x 1 in, 12 in x 36 in 1 in, 12 in x 36 in x 1 in, 14 in x 14 in x 1 in, 14 in x 18 in x 1 in, 14 in x 20 in x 1 in, 14 in x 24 in x 1 in, 14 in x 25 in x 1 in, 14 in x 30 in x 1 in, 14 in x 36 in x 1 in, 15 in x 20 in x 1 in, 16 in x 25 in x 1 in, 16 in x 16 in x 1 in, 16 in x 20 in x 1 in, 16 in x 20 in x 2 in, 16 in x 24 in x 1 in, 16 in x 24 in x 2 in, 16 in x 25 in x 1 in, 16 in x 25 in x 2 in, 16 in x 25 in x 4 in, 16 in x 25 in x 5 in, 16 in x 30 in x 1 in, 16.5 in x 21.5 in x 1 in, 17 in x 21 in x 1 in, 17.5 in x 22 in x 1 in, 17.5 in x 23.5 in x 1 in, 17.5 in x 29.5 in x 1 in, 18 in x 18 in x 1 in, 18 in x 20 in x 1 in, 18 in x 24 in x 1 in, 18 in x 25 in x 1 in, 18 in x 30 in x 1 in, 19.5 in x 19.5 in x 1 in, 19.5 in x 23.5 in x 1 in, 19.5 in x 29.5 in x 1 in, 19.875 in x 21.5 in x 1 in, 20 in x 20 in x 1 in, 20 in x 20 in x 2 in, 20 in x 20 in x 4 in, 20 in x 22 in x 1 in, 20 in x 24 in x 1 in, 20 in x 25 in x 1 in, 20 in x 25 in x 2 in, 20 in x 25 in x 4 in, 20 in x 25 in x 5 in, 20 in x 30 in x 1 in, 20 in x 36 in x 1 in, 21 in x 21 in x 1 in, 21.5 in x 23.5 in x 1 in, 21.5 in x 24 in x 1 in, 22 in x 22 in x 1 in, 23.5 in x 23.5 in x 1 in, 24 in x 24 in x 1 in, 24 in x 30 in x 1 in, 25 in x 25 in x 1 in, 30 in x 60 in x 1 in
    Thickness
    1 in, 2 in, 4 in, 5 in
    Change Reminders
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    • Filtrete Change Reminders

      Your lifestyle affects how quickly your home's air filter expires. Let us help you create a healthier home environment by taking it's characteristics into account.

      Get custom filter change reminders and personalized home tips based on your home environment by signing up for a Filtrete change reminder program.

    Customer Reviews
    Filtrete™ Allergen Defense Air Filters is rated 4.7 out of 5 by 428.
    Rated 5 out of 5 by from Great product! I’ve been using these for several years now, and I am VERY PLEASED with how much they filter. I try to change them every 1-3 months, depending on how much they are filtering.
    Date published: 2019-04-09
    Rated 5 out of 5 by from Keeps my allergies at bay We have a furnace that uses the 16x25x4 size allergen filter, and we keep either the heat or the air on all year because of my allergies--no open windows, doctor's orders. I've noticed that there is very little dust on my furniture since using the Allergen Defense filter, which lasts for a year, and I have little or no allergy symptoms indoors. It helps me breathe easier!
    Date published: 2019-03-31
    Rated 5 out of 5 by from Love it!!! I am a habitual buyer of this filter it keeps our furnace going. Generous rebate offers. Wish more stores carry this brand in stock.
    Date published: 2019-03-30
    Rated 5 out of 5 by from Long Lasting! The cheapie filters do not last a month before they need to be changed. Filtretes go at least 3 months, and longer in the summer months for us. My wife notices cleaner air and less dust in our home. The additional value speaks for itself. If you want to "save $", stop buying bottled water!
    Date published: 2019-03-29
    Rated 1 out of 5 by from Do not buy I bought this filter for my furnace and noticed furnace won't quit running. My furnace ran constantly for 2 days until I find out from the technition that this 3M filter is made too thick for smooth air flow, which will make the furnace work harder to compensate. The issue was solved as soon as changed with a different filter.
    Date published: 2019-03-25
    Rated 5 out of 5 by from Fresh The air is noticeably fresher and therefore, cleaner. We change it every (3) months. Very satisfied.
    Date published: 2019-03-07
    Rated 5 out of 5 by from 18x20x1 My Filtrete HVAC air filter is not a common size, so I am so glad to find it when I can. I will drive around just to find it because I simply won't settle for anything other than Filtrete. Evidence of its effectiveness is when I change it every 2 or 3 months (depending on season) and comparing the new to the old filter. Just glad to see that I'm not breathing in all the dust, pollen, etc. that the air filter catches!
    Date published: 2019-03-03
    Rated 4 out of 5 by from Works Well We are happy with what the filter does for us and our home.
    Date published: 2019-03-03
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